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nuclei </div> </a> <ul id="toc-Synthesis_of_superheavy_nuclei-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Decay_and_detection" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Decay_and_detection"> <div class="vector-toc-text"> 1.2 Decay and detection </div> </a> <ul id="toc-Decay_and_detection-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> 2 History </div> </a> <button aria-controls="toc-History-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle History subsection </button> <ul id="toc-History-sublist" class="vector-toc-list"> <li id="toc-Pre-discovery" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Pre-discovery"> <div class="vector-toc-text"> 2.1 Pre-discovery </div> </a> <ul id="toc-Pre-discovery-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-First_signs" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#First_signs"> <div class="vector-toc-text"> 2.2 First signs </div> </a> <ul id="toc-First_signs-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Confirmed_discovery" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Confirmed_discovery"> <div class="vector-toc-text"> 2.3 Confirmed discovery </div> </a> <ul id="toc-Confirmed_discovery-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Isotopes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Isotopes"> <div class="vector-toc-text"> 2.4 Isotopes </div> </a> <ul id="toc-Isotopes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Naming" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Naming"> <div class="vector-toc-text"> 2.5 Naming </div> </a> <ul id="toc-Naming-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Predicted_properties" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Predicted_properties"> <div class="vector-toc-text"> 3 Predicted properties </div> </a> <button aria-controls="toc-Predicted_properties-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Predicted properties subsection </button> <ul id="toc-Predicted_properties-sublist" class="vector-toc-list"> <li id="toc-Nuclear_stability_and_isotopes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nuclear_stability_and_isotopes"> <div class="vector-toc-text"> 3.1 Nuclear stability and isotopes </div> </a> <ul id="toc-Nuclear_stability_and_isotopes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Atomic_and_physical" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Atomic_and_physical"> <div class="vector-toc-text"> 3.2 Atomic and physical </div> </a> <ul id="toc-Atomic_and_physical-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Chemical" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Chemical"> <div class="vector-toc-text"> 3.3 Chemical </div> </a> <ul id="toc-Chemical-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Experimental_chemistry" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Experimental_chemistry"> <div class="vector-toc-text"> 4 Experimental chemistry </div> </a> <ul id="toc-Experimental_chemistry-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> 5 See also </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Notes"> <div class="vector-toc-text"> 6 Notes </div> </a> <ul id="toc-Notes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> 7 References </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliography" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bibliography"> <div class="vector-toc-text"> 8 Bibliography </div> </a> <ul id="toc-Bibliography-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> 9 External links </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" > Toggle the table of contents </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading">Flerovium</h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 122 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-122" aria-hidden="true" > 122 languages </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Flerovium" title="Flerovium – Afrikaans" lang="af" hreflang="af" data-title="Flerovium" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target">Afrikaans</a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%8D%8D%E1%88%8C%E1%88%AE%E1%89%AA%E1%8B%A8%E1%88%9D" title="ፍሌሮቪየም – Amharic" lang="am" hreflang="am" data-title="ፍሌሮቪየም" data-language-autonym="አማርኛ" data-language-local-name="Amharic" class="interlanguage-link-target">አማርኛ</a></li><li class="interlanguage-link interwiki-anp mw-list-item"><a href="https://anp.wikipedia.org/wiki/%E0%A4%AB%E0%A5%8D%E0%A4%B2%E0%A5%87%E0%A4%B0%E0%A5%8B%E0%A4%B5%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="फ्लेरोवियम – Angika" lang="anp" hreflang="anp" data-title="फ्लेरोवियम" data-language-autonym="अंगिका" data-language-local-name="Angika" class="interlanguage-link-target">अंगिका</a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%81%D9%84%D9%8A%D8%B1%D9%88%D9%81%D9%8A%D9%88%D9%85" title="فليروفيوم – Arabic" lang="ar" hreflang="ar" data-title="فليروفيوم" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target">العربية</a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Flerovio" title="Flerovio – Aragonese" lang="an" hreflang="an" data-title="Flerovio" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target">Aragonés</a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Fleroviu" title="Fleroviu – Aromanian" lang="rup" hreflang="rup" data-title="Fleroviu" data-language-autonym="Armãneashti" data-language-local-name="Aromanian" class="interlanguage-link-target">Armãneashti</a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Fleroviu" title="Fleroviu – Asturian" lang="ast" hreflang="ast" data-title="Fleroviu" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target">Asturianu</a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Flerovium" title="Flerovium – Azerbaijani" lang="az" hreflang="az" data-title="Flerovium" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target">Azərbaycanca</a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Fl%C3%A9rovium" title="Flérovium – Balinese" lang="ban" hreflang="ban" data-title="Flérovium" data-language-autonym="Basa Bali" data-language-local-name="Balinese" class="interlanguage-link-target">Basa Bali</a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AB%E0%A7%8D%E0%A6%B2%E0%A7%87%E0%A6%B0%E0%A7%8B%E0%A6%AD%E0%A6%BF%E0%A6%AF%E0%A6%BC%E0%A6%BE%E0%A6%AE" title="ফ্লেরোভিয়াম – Bangla" lang="bn" hreflang="bn" data-title="ফ্লেরোভিয়াম" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target">বাংলা</a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Flerovium" title="Flerovium – Minnan" lang="nan" hreflang="nan" data-title="Flerovium" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target">閩南語 / Bân-lâm-gú</a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D1%96%D0%B9" title="Флеровій – Belarusian" lang="be" hreflang="be" data-title="Флеровій" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target">Беларуская</a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D1%9E" title="Флероў – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Флероў" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target">Беларуская (тарашкевіца)</a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%AB%E0%A5%8D%E0%A4%B2%E0%A5%87%E0%A4%B0%E0%A5%8B%E0%A4%B5%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="फ्लेरोवियम – Bhojpuri" lang="bh" hreflang="bh" data-title="फ्लेरोवियम" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target">भोजपुरी</a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8%D0%B9" title="Флеровий – Bulgarian" lang="bg" hreflang="bg" data-title="Флеровий" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target">Български</a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Flerovij" title="Flerovij – Bosnian" lang="bs" hreflang="bs" data-title="Flerovij" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target">Bosanski</a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Fleroviom" title="Fleroviom – Breton" lang="br" hreflang="br" data-title="Fleroviom" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target">Brezhoneg</a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Flerovi" title="Flerovi – Catalan" lang="ca" hreflang="ca" data-title="Flerovi" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target">Català</a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8%D0%B9" title="Флеровий – Chuvash" lang="cv" hreflang="cv" data-title="Флеровий" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target">Чӑвашла</a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Flerovyum" title="Flerovyum – Cebuano" lang="ceb" hreflang="ceb" data-title="Flerovyum" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target">Cebuano</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Flerovium" title="Flerovium – Czech" lang="cs" hreflang="cs" data-title="Flerovium" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target">Čeština</a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Fleroviu" title="Fleroviu – Corsican" lang="co" hreflang="co" data-title="Fleroviu" data-language-autonym="Corsu" data-language-local-name="Corsican" class="interlanguage-link-target">Corsu</a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Fflerofiwm" title="Fflerofiwm – Welsh" lang="cy" hreflang="cy" data-title="Fflerofiwm" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target">Cymraeg</a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Flerovium" title="Flerovium – Danish" lang="da" hreflang="da" data-title="Flerovium" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target">Dansk</a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Flerovium" title="Flerovium – German" lang="de" hreflang="de" data-title="Flerovium" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Fleroovium" title="Fleroovium – Estonian" lang="et" hreflang="et" data-title="Fleroovium" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target">Eesti</a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A6%CE%BB%CE%B5%CF%81%CF%8C%CE%B2%CE%B9%CE%BF" title="Φλερόβιο – Greek" lang="el" hreflang="el" data-title="Φλερόβιο" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target">Ελληνικά</a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Flerovio" title="Flerovio – Spanish" lang="es" hreflang="es" data-title="Flerovio" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Flerovio" title="Flerovio – Esperanto" lang="eo" hreflang="eo" data-title="Flerovio" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target">Esperanto</a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Flerovio" title="Flerovio – Basque" lang="eu" hreflang="eu" data-title="Flerovio" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target">Euskara</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%81%D9%84%D8%B1%D9%88%D9%88%DB%8C%D9%85" title="فلروویم – Persian" lang="fa" hreflang="fa" data-title="فلروویم" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Flerovium" title="Flerovium – Fiji Hindi" lang="hif" hreflang="hif" data-title="Flerovium" data-language-autonym="Fiji Hindi" data-language-local-name="Fiji Hindi" class="interlanguage-link-target">Fiji Hindi</a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Fl%C3%A9rovium" title="Flérovium – French" lang="fr" hreflang="fr" data-title="Flérovium" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Ununquadium" title="Ununquadium – Friulian" lang="fur" hreflang="fur" data-title="Ununquadium" data-language-autonym="Furlan" data-language-local-name="Friulian" class="interlanguage-link-target">Furlan</a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Fl%C3%A9ar%C3%B3iviam" title="Fléaróiviam – Irish" lang="ga" hreflang="ga" data-title="Fléaróiviam" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target">Gaeilge</a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Flerovium" title="Flerovium – Manx" lang="gv" hreflang="gv" data-title="Flerovium" data-language-autonym="Gaelg" data-language-local-name="Manx" class="interlanguage-link-target">Gaelg</a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Flerovium" title="Flerovium – Scottish Gaelic" lang="gd" hreflang="gd" data-title="Flerovium" data-language-autonym="Gàidhlig" data-language-local-name="Scottish Gaelic" class="interlanguage-link-target">Gàidhlig</a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Flerovio" title="Flerovio – Galician" lang="gl" hreflang="gl" data-title="Flerovio" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target">Galego</a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/Flerovium" title="Flerovium – Hakka Chinese" lang="hak" hreflang="hak" data-title="Flerovium" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="Hakka Chinese" class="interlanguage-link-target">客家語 / Hak-kâ-ngî</a></li><li class="interlanguage-link interwiki-xal mw-list-item"><a href="https://xal.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8%D1%83%D0%BC" title="Флеровиум – Kalmyk" lang="xal" hreflang="xal" data-title="Флеровиум" data-language-autonym="Хальмг" data-language-local-name="Kalmyk" class="interlanguage-link-target">Хальмг</a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%94%8C%EB%A0%88%EB%A1%9C%EB%B8%80" title="플레로븀 – Korean" lang="ko" hreflang="ko" data-title="플레로븀" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target">한국어</a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%96%D5%AC%D5%A5%D6%80%D5%B8%D5%BE%D5%AB%D5%B8%D6%82%D5%B4" title="Ֆլերովիում – Armenian" lang="hy" hreflang="hy" data-title="Ֆլերովիում" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target">Հայերեն</a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AB%E0%A5%8D%E0%A4%B2%E0%A5%87%E0%A4%B0%E0%A5%8B%E0%A4%B5%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="फ्लेरोवियम – Hindi" lang="hi" hreflang="hi" data-title="फ्लेरोवियम" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target">हिन्दी</a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Flerovij" title="Flerovij – Croatian" lang="hr" hreflang="hr" data-title="Flerovij" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target">Hrvatski</a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Flerovio" title="Flerovio – Ido" lang="io" hreflang="io" data-title="Flerovio" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target">Ido</a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Flerovium" title="Flerovium – Indonesian" lang="id" hreflang="id" data-title="Flerovium" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target">Bahasa Indonesia</a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Flerovium" title="Flerovium – Interlingua" lang="ia" hreflang="ia" data-title="Flerovium" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target">Interlingua</a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/UmFelombi" title="UmFelombi – Zulu" lang="zu" hreflang="zu" data-title="UmFelombi" data-language-autonym="IsiZulu" data-language-local-name="Zulu" class="interlanguage-link-target">IsiZulu</a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Fler%C3%B3v%C3%ADn" title="Fleróvín – Icelandic" lang="is" hreflang="is" data-title="Fleróvín" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target">Íslenska</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Flerovio" title="Flerovio – Italian" lang="it" hreflang="it" data-title="Flerovio" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target">Italiano</a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A4%D7%9C%D7%A8%D7%95%D7%91%D7%99%D7%95%D7%9D" title="פלרוביום – Hebrew" lang="he" hreflang="he" data-title="פלרוביום" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target">עברית</a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/Fl%C9%9Br%C9%94v%C9%A9y%C9%94m" title="Flɛrɔvɩyɔm – Kabiye" lang="kbp" hreflang="kbp" data-title="Flɛrɔvɩyɔm" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target">Kabɩyɛ</a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%85%E0%B2%A8%E0%B2%A8%E0%B3%8D%E0%B2%95%E0%B3%8D%E0%B2%B5%E0%B2%BE%E0%B2%A1%E0%B2%BF%E0%B2%AF%E0%B2%AE%E0%B3%8D" title="ಅನನ್ಕ್ವಾಡಿಯಮ್ – Kannada" lang="kn" hreflang="kn" data-title="ಅನನ್ಕ್ವಾಡಿಯಮ್" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target">ಕನ್ನಡ</a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%A4%E1%83%9A%E1%83%94%E1%83%A0%E1%83%9D%E1%83%95%E1%83%98%E1%83%A3%E1%83%9B%E1%83%98" title="ფლეროვიუმი – Georgian" lang="ka" hreflang="ka" data-title="ფლეროვიუმი" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target">ქართული</a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8%D0%B9" title="Флеровий – Kazakh" lang="kk" hreflang="kk" data-title="Флеровий" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target">Қазақша</a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Fleroviom" title="Fleroviom – Cornish" lang="kw" hreflang="kw" data-title="Fleroviom" data-language-autonym="Kernowek" data-language-local-name="Cornish" class="interlanguage-link-target">Kernowek</a></li><li class="interlanguage-link interwiki-kv mw-list-item"><a href="https://kv.wikipedia.org/wiki/%D0%A4%D0%BB%D1%91%D1%80%D0%BE%D0%B2%D0%B8%D0%B9" title="Флёровий – Komi" lang="kv" hreflang="kv" data-title="Флёровий" data-language-autonym="Коми" data-language-local-name="Komi" class="interlanguage-link-target">Коми</a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Fleroviy%C3%BBm" title="Fleroviyûm – Kurdish" lang="ku" hreflang="ku" data-title="Fleroviyûm" data-language-autonym="Kurdî" data-language-local-name="Kurdish" class="interlanguage-link-target">Kurdî</a></li><li class="interlanguage-link interwiki-mrj mw-list-item"><a href="https://mrj.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8%D0%B9" title="Флеровий – Western Mari" lang="mrj" hreflang="mrj" data-title="Флеровий" data-language-autonym="Кырык мары" data-language-local-name="Western Mari" class="interlanguage-link-target">Кырык мары</a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Flerovium" title="Flerovium – Latin" lang="la" hreflang="la" data-title="Flerovium" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target">Latina</a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Flerovijs" title="Flerovijs – Latvian" lang="lv" hreflang="lv" data-title="Flerovijs" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target">Latviešu</a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Flerovium" title="Flerovium – Luxembourgish" lang="lb" hreflang="lb" data-title="Flerovium" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxembourgish" class="interlanguage-link-target">Lëtzebuergesch</a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Flerovis" title="Flerovis – Lithuanian" lang="lt" hreflang="lt" data-title="Flerovis" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target">Lietuvių</a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Fler%C3%B2vio" title="Fleròvio – Ligurian" lang="lij" hreflang="lij" data-title="Fleròvio" data-language-autonym="Ligure" data-language-local-name="Ligurian" class="interlanguage-link-target">Ligure</a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Flerovium" title="Flerovium – Limburgish" lang="li" hreflang="li" data-title="Flerovium" data-language-autonym="Limburgs" data-language-local-name="Limburgish" class="interlanguage-link-target">Limburgs</a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Fler%C3%B3vium" title="Fleróvium – Hungarian" lang="hu" hreflang="hu" data-title="Fleróvium" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target">Magyar</a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8%D1%83%D0%BC" title="Флеровиум – Macedonian" lang="mk" hreflang="mk" data-title="Флеровиум" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target">Македонски</a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%AB%E0%B5%8D%E0%B4%B2%E0%B5%86%E0%B4%B1%E0%B5%8B%E0%B4%B5%E0%B4%BF%E0%B4%AF%E0%B4%82" title="ഫ്ലെറോവിയം – Malayalam" lang="ml" hreflang="ml" data-title="ഫ്ലെറോവിയം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target">മലയാളം</a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%85%E0%A4%A8%E0%A5%81%E0%A4%A8%E0%A4%95%E0%A5%8D%E0%A4%B5%E0%A5%87%E0%A4%A1%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="अनुनक्वेडियम – Marathi" lang="mr" hreflang="mr" data-title="अनुनक्वेडियम" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target">मराठी</a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D9%81%D9%84%D9%8A%D8%B1%D9%88%D9%81%D9%8A%D9%88%D9%85" title="فليروفيوم – Egyptian Arabic" lang="arz" hreflang="arz" data-title="فليروفيوم" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target">مصرى</a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Flerovium" title="Flerovium – Malay" lang="ms" hreflang="ms" data-title="Flerovium" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target">Bahasa Melayu</a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/Flerovium" title="Flerovium – Mindong" lang="cdo" hreflang="cdo" data-title="Flerovium" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target">閩東語 / Mìng-dĕ̤ng-ngṳ̄</a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8" title="Флерови – Mongolian" lang="mn" hreflang="mn" data-title="Флерови" data-language-autonym="Монгол" data-language-local-name="Mongolian" class="interlanguage-link-target">Монгол</a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%96%E1%80%9C%E1%80%9B%E1%80%AD%E1%80%AF%E1%80%97%E1%80%AE%E1%80%9A%E1%80%99%E1%80%BA" title="ဖလရိုဗီယမ် – Burmese" lang="my" hreflang="my" data-title="ဖလရိုဗီယမ်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target">မြန်မာဘာသာ</a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Flerovium" title="Flerovium – Dutch" lang="nl" hreflang="nl" data-title="Flerovium" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target">Nederlands</a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%AB%E0%A5%8D%E0%A4%B2%E0%A5%87%E0%A4%B0%E0%A5%8B%E0%A4%AB%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="फ्लेरोफियम – Newari" lang="new" hreflang="new" data-title="फ्लेरोफियम" data-language-autonym="नेपाल भाषा" data-language-local-name="Newari" class="interlanguage-link-target">नेपाल भाषा</a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%95%E3%83%AC%E3%83%AD%E3%83%93%E3%82%A6%E3%83%A0" title="フレロビウム – Japanese" lang="ja" hreflang="ja" data-title="フレロビウム" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target">日本語</a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Fleroowium" title="Fleroowium – Northern Frisian" lang="frr" hreflang="frr" data-title="Fleroowium" data-language-autonym="Nordfriisk" data-language-local-name="Northern Frisian" class="interlanguage-link-target">Nordfriisk</a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Flerovium" title="Flerovium – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Flerovium" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target">Norsk bokmål</a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Flerovium" title="Flerovium – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Flerovium" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target">Norsk nynorsk</a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Fler%C3%B2vi" title="Fleròvi – Occitan" lang="oc" hreflang="oc" data-title="Fleròvi" data-language-autonym="Occitan" data-language-local-name="Occitan" class="interlanguage-link-target">Occitan</a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%AB%E0%AD%8D%E0%AC%B2%E0%AD%87%E0%AC%B0%E0%AD%8B%E0%AC%AD%E0%AC%BF%E0%AC%85%E0%AC%AE" title="ଫ୍ଲେରୋଭିଅମ – Odia" lang="or" hreflang="or" data-title="ଫ୍ଲେରୋଭିଅମ" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="Odia" class="interlanguage-link-target">ଓଡ଼ିଆ</a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Fleroviy" title="Fleroviy – Uzbek" lang="uz" hreflang="uz" data-title="Fleroviy" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target">Oʻzbekcha / ўзбекча</a></li><li class="interlanguage-link interwiki-pi mw-list-item"><a href="https://pi.wikipedia.org/wiki/%E0%A4%89%E0%A4%A8%E0%A4%89%E0%A4%A8%E0%A4%95%E0%A5%8D%E0%A4%B5%E0%A4%BE%E0%A4%A1%E0%A5%83%E0%A4%AF%E0%A4%AE" title="उनउनक्वाडृयम – Pali" lang="pi" hreflang="pi" data-title="उनउनक्वाडृयम" data-language-autonym="पालि" data-language-local-name="Pali" class="interlanguage-link-target">पालि</a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D9%81%D9%84%D8%A6%D8%B1%D9%88%D9%88%DB%8C%D9%85" title="فلئروویم – Western Punjabi" lang="pnb" hreflang="pnb" data-title="فلئروویم" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target">پنجابی</a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D9%81%D9%84%D8%B1%D9%88%D9%88%D9%8A%D9%88%D9%85" title="فلروويوم – Pashto" lang="ps" hreflang="ps" data-title="فلروويوم" data-language-autonym="پښتو" data-language-local-name="Pashto" class="interlanguage-link-target">پښتو</a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Flerovium" title="Flerovium – Low German" lang="nds" hreflang="nds" data-title="Flerovium" data-language-autonym="Plattdüütsch" data-language-local-name="Low German" class="interlanguage-link-target">Plattdüütsch</a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Flerow" title="Flerow – Polish" lang="pl" hreflang="pl" data-title="Flerow" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target">Polski</a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Fler%C3%B3vio" title="Fleróvio – Portuguese" lang="pt" hreflang="pt" data-title="Fleróvio" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target">Português</a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Fleroviu" title="Fleroviu – Romanian" lang="ro" hreflang="ro" data-title="Fleroviu" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target">Română</a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Philirupyu" title="Philirupyu – Quechua" lang="qu" hreflang="qu" data-title="Philirupyu" data-language-autonym="Runa Simi" data-language-local-name="Quechua" class="interlanguage-link-target">Runa Simi</a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8%D0%B9" title="Флеровий – Russian" lang="ru" hreflang="ru" data-title="Флеровий" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target">Русский</a></li><li class="interlanguage-link interwiki-sa mw-list-item"><a href="https://sa.wikipedia.org/wiki/%E0%A4%89%E0%A4%A8%E0%A4%89%E0%A4%A8%E0%A4%95%E0%A5%8D%E0%A4%B5%E0%A4%BE%E0%A4%A1%E0%A5%83%E0%A4%AF%E0%A4%AE" title="उनउनक्वाडृयम – Sanskrit" lang="sa" hreflang="sa" data-title="उनउनक्वाडृयम" data-language-autonym="संस्कृतम्" data-language-local-name="Sanskrit" class="interlanguage-link-target">संस्कृतम्</a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Fler%C3%B2viu" title="Fleròviu – Sardinian" lang="sc" hreflang="sc" data-title="Fleròviu" data-language-autonym="Sardu" data-language-local-name="Sardinian" class="interlanguage-link-target">Sardu</a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Fleroviumi" title="Fleroviumi – Albanian" lang="sq" hreflang="sq" data-title="Fleroviumi" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target">Shqip</a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Ununquadiu" title="Ununquadiu – Sicilian" lang="scn" hreflang="scn" data-title="Ununquadiu" data-language-autonym="Sicilianu" data-language-local-name="Sicilian" class="interlanguage-link-target">Sicilianu</a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Flerovium" title="Flerovium – Simple English" lang="en-simple" hreflang="en-simple" data-title="Flerovium" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target">Simple English</a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Fler%C3%B3vium" title="Fleróvium – Slovak" lang="sk" hreflang="sk" data-title="Fleróvium" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target">Slovenčina</a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Flerovij" title="Flerovij – Slovenian" lang="sl" hreflang="sl" data-title="Flerovij" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target">Slovenščina</a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%81%D9%84%DB%8C%D8%B1%DB%86%DA%A4%DB%8C%DB%86%D9%85" title="فلیرۆڤیۆم – Central Kurdish" lang="ckb" hreflang="ckb" data-title="فلیرۆڤیۆم" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target">کوردی</a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8%D1%98%D1%83%D0%BC" title="Флеровијум – Serbian" lang="sr" hreflang="sr" data-title="Флеровијум" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target">Српски / srpski</a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Flerovijum" title="Flerovijum – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Flerovijum" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target">Srpskohrvatski / српскохрватски</a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Flerovium" title="Flerovium – Finnish" lang="fi" hreflang="fi" data-title="Flerovium" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target">Suomi</a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Flerovium" title="Flerovium – Swedish" lang="sv" hreflang="sv" data-title="Flerovium" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target">Svenska</a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Flerovyo" title="Flerovyo – Tagalog" lang="tl" hreflang="tl" data-title="Flerovyo" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target">Tagalog</a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%AA%E0%AE%BF%E0%AE%B3%E0%AF%86%E0%AE%B0%E0%AF%8B%E0%AE%B5%E0%AE%BF%E0%AE%AF%E0%AE%AE%E0%AF%8D" title="பிளெரோவியம் – Tamil" lang="ta" hreflang="ta" data-title="பிளெரோவியம்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target">தமிழ்</a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%A4%D0%BB%D3%A9%D1%80%D0%BE%D0%B2%D0%B8%D0%B9" title="Флөровий – Tatar" lang="tt" hreflang="tt" data-title="Флөровий" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target">Татарча / tatarça</a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%AB%E0%B1%8D%E0%B0%B2%E0%B1%86%E0%B0%B0%E0%B1%8B%E0%B0%B5%E0%B0%BF%E0%B0%AF%E0%B0%82" title="ఫ్లెరోవియం – Telugu" lang="te" hreflang="te" data-title="ఫ్లెరోవియం" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target">తెలుగు</a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%9F%E0%B8%A5%E0%B8%B4%E0%B9%82%E0%B8%A3%E0%B9%80%E0%B8%A7%E0%B8%B5%E0%B8%A2%E0%B8%A1" title="ฟลิโรเวียม – Thai" lang="th" hreflang="th" data-title="ฟลิโรเวียม" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target">ไทย</a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D0%B8%D0%B9" title="Флеровий – Tajik" lang="tg" hreflang="tg" data-title="Флеровий" data-language-autonym="Тоҷикӣ" data-language-local-name="Tajik" class="interlanguage-link-target">Тоҷикӣ</a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Flerovyum" title="Flerovyum – Turkish" lang="tr" hreflang="tr" data-title="Flerovyum" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target">Türkçe</a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A4%D0%BB%D0%B5%D1%80%D0%BE%D0%B2%D1%96%D0%B9" title="Флеровій – Ukrainian" lang="uk" hreflang="uk" data-title="Флеровій" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target">Українська</a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%81%D9%84%DB%8C%D8%B1%D9%88%D9%81%DB%8C%D8%A6%D9%85" title="فلیروفیئم – Urdu" lang="ur" hreflang="ur" data-title="فلیروفیئم" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target">اردو</a></li><li class="interlanguage-link interwiki-ug mw-list-item"><a href="https://ug.wikipedia.org/wiki/%D9%81%D9%84%DB%90%D8%B1%D9%88%DB%8B%D9%89%D9%8A" title="فلېروۋىي – Uyghur" lang="ug" hreflang="ug" data-title="فلېروۋىي" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="Uyghur" class="interlanguage-link-target">ئۇيغۇرچە / Uyghurche</a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Fl%C3%B6rovii" title="Flörovii – Veps" lang="vep" hreflang="vep" data-title="Flörovii" data-language-autonym="Vepsän kel’" data-language-local-name="Veps" class="interlanguage-link-target">Vepsän kel’</a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Flerovi" title="Flerovi – Vietnamese" lang="vi" hreflang="vi" data-title="Flerovi" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target">Tiếng Việt</a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E9%88%87" title="鈇 – Literary Chinese" lang="lzh" hreflang="lzh" data-title="鈇" data-language-autonym="文言" data-language-local-name="Literary Chinese" class="interlanguage-link-target">文言</a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Flerovyo" title="Flerovyo – Waray" lang="war" hreflang="war" data-title="Flerovyo" data-language-autonym="Winaray" data-language-local-name="Waray" class="interlanguage-link-target">Winaray</a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%F0%AB%93%A7" title="𫓧 – Wu" lang="wuu" hreflang="wuu" data-title="𫓧" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target">吴语</a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a 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Click here for more information." src="//upload.wikimedia.org/wikipedia/en/thumb/9/94/Symbol_support_vote.svg/19px-Symbol_support_vote.svg.png" decoding="async" width="19" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/94/Symbol_support_vote.svg/29px-Symbol_support_vote.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/94/Symbol_support_vote.svg/39px-Symbol_support_vote.svg.png 2x" data-file-width="180" data-file-height="185" /></a></div></div> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chemical element with atomic number 114 (Fl)</div><style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><style data-mw-deduplicate="TemplateStyles:r1158442001">body.skin-minerva .mw-parser-output .infobox-full-data>.wikitable,body.skin-minerva .mw-parser-output .infobox .periodictable{display:table}body.skin-minerva .mw-parser-output .infobox-full-data{width:calc(100% - 20px)}body.skin-minerva .mw-parser-output .infobox-full-data>div{max-width:100%;overflow:auto}body.skin-minerva .mw-parser-output .infobox caption{display:table-caption}</style><table class="infobox"><caption class="infobox-title">Flerovium, 114Fl</caption><tbody><tr><th colspan="2" class="infobox-header" style="color:inherit; background:#fdff8c">Flerovium</th></tr><tr><th scope="row" class="infobox-label">Pronunciation</th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist" style="margin: 0; text-align: left;"><ul><li style="margin: 0; text-indent: -1em; padding-left: 1em;"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/fləˈroʊviəm/</a><a href="#cite_note-1">[1]</a> (<a href="/wiki/Help:Pronunciation_respelling_key" title="Help:Pronunciation respelling key">flə-ROH-vee-əm</a>)</li><li style="margin: 0; text-indent: -1em; padding-left: 1em;"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/flɛˈroʊviəm/</a><a href="#cite_note-2">[2]</a> (<a href="/wiki/Help:Pronunciation_respelling_key" title="Help:Pronunciation respelling key">flerr-OH-vee-əm</a>)</li></ul></div></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Mass_number" title="Mass number">Mass number</a></th><td class="infobox-data">[289] (unconfirmed: 290)</td></tr><tr><th colspan="2" class="infobox-header" style="color:inherit; background:#fdff8c">Flerovium in the <a href="/wiki/Periodic_table" title="Periodic table">periodic table</a></th></tr><tr><td colspan="2" class="infobox-full-data"> <table class="wikitable" style="text-align:center; width:100%; margin:0; background:#f8f8f8; color:black;"> <tbody><tr> <td> <table class="periodictable" style="margin:0 auto"> <tbody><tr> <td style="border:none; width:5px"><div style="background-color:transparent; color:inherit; margin:0; padding:0; text-align:center; border:none;"> <table style="empty-cells:hidden; border:none; padding:0; border-spacing:1px; border-collapse:separate; margin:0;"> <tbody><tr> <td style="border:none;padding:0;"><a href="/wiki/Hydrogen" title="Hydrogen">Hydrogen</a> </td> <td colspan="30" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Helium" title="Helium">Helium</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Lithium" title="Lithium">Lithium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Beryllium" title="Beryllium">Beryllium</a> </td> <td colspan="24" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Boron" title="Boron">Boron</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Carbon" title="Carbon">Carbon</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nitrogen" title="Nitrogen">Nitrogen</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Oxygen" title="Oxygen">Oxygen</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fluorine" title="Fluorine">Fluorine</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neon" title="Neon">Neon</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Sodium" title="Sodium">Sodium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Magnesium" title="Magnesium">Magnesium</a> </td> <td colspan="24" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Aluminium" title="Aluminium">Aluminium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Silicon" title="Silicon">Silicon</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Phosphorus" title="Phosphorus">Phosphorus</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Sulfur" title="Sulfur">Sulfur</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Chlorine" title="Chlorine">Chlorine</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Argon" title="Argon">Argon</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Potassium" title="Potassium">Potassium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Calcium" title="Calcium">Calcium</a> </td> <td colspan="14" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Scandium" title="Scandium">Scandium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Titanium" title="Titanium">Titanium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Vanadium" title="Vanadium">Vanadium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Chromium" title="Chromium">Chromium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Manganese" title="Manganese">Manganese</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iron" title="Iron">Iron</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cobalt" title="Cobalt">Cobalt</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nickel" title="Nickel">Nickel</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Copper" title="Copper">Copper</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Zinc" title="Zinc">Zinc</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gallium" title="Gallium">Gallium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Germanium" title="Germanium">Germanium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Arsenic" title="Arsenic">Arsenic</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Selenium" title="Selenium">Selenium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bromine" title="Bromine">Bromine</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Krypton" title="Krypton">Krypton</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Rubidium" title="Rubidium">Rubidium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Strontium" title="Strontium">Strontium</a> </td> <td style="border:none;padding:0;; width:0;"> </td> <td colspan="13" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Yttrium" title="Yttrium">Yttrium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Zirconium" title="Zirconium">Zirconium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Niobium" title="Niobium">Niobium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Molybdenum" title="Molybdenum">Molybdenum</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Technetium" title="Technetium">Technetium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Ruthenium" title="Ruthenium">Ruthenium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rhodium" title="Rhodium">Rhodium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Palladium" title="Palladium">Palladium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Silver" title="Silver">Silver</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cadmium" title="Cadmium">Cadmium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Indium" title="Indium">Indium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tin" title="Tin">Tin</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Antimony" title="Antimony">Antimony</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tellurium" title="Tellurium">Tellurium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iodine" title="Iodine">Iodine</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Xenon" title="Xenon">Xenon</a> </td></tr> <tr style="border:none;padding:0;"> <td style="border:none;padding:0;"><a href="/wiki/Caesium" title="Caesium">Caesium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Barium" title="Barium">Barium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lanthanum" title="Lanthanum">Lanthanum</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cerium" title="Cerium">Cerium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Praseodymium" title="Praseodymium">Praseodymium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neodymium" title="Neodymium">Neodymium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Promethium" title="Promethium">Promethium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Samarium" title="Samarium">Samarium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Europium" title="Europium">Europium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gadolinium" title="Gadolinium">Gadolinium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Terbium" title="Terbium">Terbium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Dysprosium" title="Dysprosium">Dysprosium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Holmium" title="Holmium">Holmium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Erbium" title="Erbium">Erbium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thulium" title="Thulium">Thulium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Ytterbium" title="Ytterbium">Ytterbium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lutetium" title="Lutetium">Lutetium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Hafnium" title="Hafnium">Hafnium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tantalum" title="Tantalum">Tantalum</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tungsten" title="Tungsten">Tungsten</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rhenium" title="Rhenium">Rhenium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Osmium" title="Osmium">Osmium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iridium" title="Iridium">Iridium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Platinum" title="Platinum">Platinum</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gold" title="Gold">Gold</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mercury_(element)" title="Mercury (element)">Mercury (element)</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thallium" title="Thallium">Thallium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lead" title="Lead">Lead</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bismuth" title="Bismuth">Bismuth</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Polonium" title="Polonium">Polonium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Astatine" title="Astatine">Astatine</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Radon" title="Radon">Radon</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Francium" title="Francium">Francium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Radium" title="Radium">Radium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Actinium" title="Actinium">Actinium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thorium" title="Thorium">Thorium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Protactinium" title="Protactinium">Protactinium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Uranium" title="Uranium">Uranium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neptunium" title="Neptunium">Neptunium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Plutonium" title="Plutonium">Plutonium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Americium" title="Americium">Americium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Curium" title="Curium">Curium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Berkelium" title="Berkelium">Berkelium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Californium" title="Californium">Californium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Einsteinium" title="Einsteinium">Einsteinium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fermium" title="Fermium">Fermium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mendelevium" title="Mendelevium">Mendelevium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nobelium" title="Nobelium">Nobelium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lawrencium" title="Lawrencium">Lawrencium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rutherfordium" title="Rutherfordium">Rutherfordium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Dubnium" title="Dubnium">Dubnium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Seaborgium" title="Seaborgium">Seaborgium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bohrium" title="Bohrium">Bohrium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Hassium" title="Hassium">Hassium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Meitnerium" title="Meitnerium">Meitnerium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Darmstadtium" title="Darmstadtium">Darmstadtium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Roentgenium" title="Roentgenium">Roentgenium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Copernicium" title="Copernicium">Copernicium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nihonium" title="Nihonium">Nihonium</a> </td> <td style="border:none;padding:0;"><a class="mw-selflink selflink">Flerovium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Moscovium" title="Moscovium">Moscovium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Livermorium" title="Livermorium">Livermorium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tennessine" title="Tennessine">Tennessine</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Oganesson" title="Oganesson">Oganesson</a> </td></tr></tbody></table> </div> </td> <td style="vertical-align:middle; text-align:center; font-size:90%; line-height:100%; width:10px; border:none;"><a href="/wiki/Lead" title="Lead">Pb</a> ↑ Fl ↓ — </td></tr> <tr> <td colspan="2" class="nowrap" style="text-align:center; font-size:90%; line-height:100%; padding-top:0; padding-bottom:1px; border:none;"><a href="/wiki/Nihonium" title="Nihonium">nihonium</a> ← flerovium → <a href="/wiki/Moscovium" title="Moscovium">moscovium</a> </td></tr></tbody></table> </td></tr></tbody></table></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Atomic_number" title="Atomic number">Atomic number</a> (Z)</th><td class="infobox-data">114</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Group_(periodic_table)" title="Group (periodic table)">Group</a></th><td class="infobox-data"><a href="/wiki/Carbon_group" title="Carbon group">group 14 (carbon group)</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Period_(periodic_table)" title="Period (periodic table)">Period</a></th><td class="infobox-data"><a href="/wiki/Period_7_element" title="Period 7 element">period 7</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Block_(periodic_table)" title="Block (periodic table)">Block</a></th><td class="infobox-data">  <a href="/wiki/Block_(periodic_table)#p-block" title="Block (periodic table)">p-block</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Electron_configuration" title="Electron configuration">Electron configuration</a></th><td class="infobox-data">[<a href="/wiki/Radon" title="Radon">Rn</a>] 5f14 6d10 7s2 7p2 (predicted)<a href="#cite_note-Haire-3">[3]</a></td></tr><tr><th scope="row" class="infobox-label">Electrons per shell</th><td class="infobox-data">2, 8, 18, 32, 32, 18, 4 (predicted)</td></tr><tr><th colspan="2" class="infobox-header" style="color:inherit; background:#fdff8c">Physical properties</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Phase_(matter)" title="Phase (matter)">Phase</a> <style data-mw-deduplicate="TemplateStyles:r886047488">.mw-parser-output .nobold{font-weight:normal}</style>at <a href="/wiki/Standard_temperature_and_pressure" title="Standard temperature and pressure">STP</a></th><td class="infobox-data">liquid (predicted)<a href="#cite_note-Florez-4">[4]</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Melting_point" title="Melting point">Melting point</a></th><td class="infobox-data">284 ± 50 <a href="/wiki/Kelvin" title="Kelvin">K</a> (11 ± 50 °C, 52 ± 90 °F) (predicted)<a href="#cite_note-Florez-4">[4]</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Density" title="Density">Density</a> (near <a href="/wiki/Room_temperature" title="Room temperature">r.t.</a>)</th><td class="infobox-data">11.4 ± 0.3 g/cm3 (predicted)<a href="#cite_note-Florez-4">[4]</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Enthalpy_of_vaporization" title="Enthalpy of vaporization">Heat of vaporization</a></th><td class="infobox-data">38 kJ/mol (predicted)<a href="#cite_note-Fricke1975-5">[5]</a></td></tr><tr><th colspan="2" class="infobox-header" style="color:inherit; background:#fdff8c">Atomic properties</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Oxidation_state" title="Oxidation state">Oxidation states</a></th><td class="infobox-data">common: (none) </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Ionization_energy" title="Ionization energy">Ionization energies</a></th><td class="infobox-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li>1st: 832.2 kJ/mol (predicted)<a href="#cite_note-VPershina-6">[6]</a></li><li>2nd: 1600 kJ/mol (predicted)<a href="#cite_note-Fricke1975-5">[5]</a></li><li>3rd: 3370 kJ/mol (predicted)<a href="#cite_note-Fricke1975-5">[5]</a></li><li>(<a href="/wiki/Molar_ionization_energies_of_the_elements#flerovium" title="Molar ionization energies of the elements">more</a>) </li></ul></div></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Atomic_radius" title="Atomic radius">Atomic radius</a></th><td class="infobox-data">empirical: 180 <a href="/wiki/Picometre" title="Picometre">pm</a> (predicted)<a href="#cite_note-Haire-3">[3]</a><a href="#cite_note-Fricke1975-5">[5]</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Covalent_radius" title="Covalent radius">Covalent radius</a></th><td class="infobox-data">171–177 pm (extrapolated)<a href="#cite_note-B&K-7">[7]</a></td></tr><tr><th colspan="2" class="infobox-header" style="color:inherit; background:#fdff8c">Other properties</th></tr><tr><th scope="row" class="infobox-label">Natural occurrence</th><td class="infobox-data"><a href="/wiki/Synthetic_element" title="Synthetic element">synthetic</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/CAS_Registry_Number" title="CAS Registry Number">CAS Number</a></th><td class="infobox-data">54085-16-4 </td></tr><tr><th colspan="2" class="infobox-header" style="color:inherit; background:#fdff8c">History</th></tr><tr><th scope="row" class="infobox-label">Naming</th><td class="infobox-data">after <a href="/wiki/Joint_Institute_for_Nuclear_Research" title="Joint Institute for Nuclear Research">Joint Institute for Nuclear Research</a> (itself named after <a href="/wiki/Georgy_Flyorov" title="Georgy Flyorov">Georgy Flyorov</a>)<a href="#cite_note-IUPAC-names-114-116-8">[8]</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Timeline_of_chemical_element_discoveries" class="mw-redirect" title="Timeline of chemical element discoveries">Discovery</a></th><td class="infobox-data"><a href="/wiki/Joint_Institute_for_Nuclear_Research" title="Joint Institute for Nuclear Research">Joint Institute for Nuclear Research</a> (JINR) and <a href="/wiki/Lawrence_Livermore_National_Laboratory" title="Lawrence Livermore National Laboratory">Lawrence Livermore National Laboratory</a> (LLNL) (1999)</td></tr><tr><th colspan="2" class="infobox-header" style="color:inherit; background:#fdff8c"><a href="/wiki/Isotopes_of_flerovium" title="Isotopes of flerovium">Isotopes of flerovium</a><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist 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dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist 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abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Infobox_flerovium_isotopes" title="Template:Infobox flerovium isotopes"><abbr title="View this template">v</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Infobox_flerovium_isotopes" title="Special:EditPage/Template:Infobox flerovium isotopes"><abbr title="Edit this template">e</abbr></a></li></ul></div></th></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></td></tr><tr><td colspan="2" class="infobox-full-data"> <table class="wikitable" style="text-align: center; vertical-align: middle; width: 100%; border-collapse: collapse; margin: 0; padding: 0;"> <tbody><tr> <th colspan="3">Main isotopes </th> <th colspan="2"><a href="/wiki/Radioactive_decay" title="Radioactive decay">Decay</a> </th></tr> <tr> <th> </th> <th style="padding: 0.1em;"><a href="/wiki/Natural_abundance" title="Natural abundance">abundance</a> </th> <th style="padding: 0.1em;"><a href="/wiki/Half-life" title="Half-life">half-life</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488">(t1/2) </th> <th style="padding: 0.1em;"><a href="/wiki/Radioactive_decay#Types_of_decay" title="Radioactive decay">mode</a> </th> <th style="padding: 0.1em;"><a href="/wiki/Decay_product" title="Decay product">product</a> </th></tr> <tr> <th rowspan="2" style="vertical-align: top;">284Fl </th> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: center;"><a href="/wiki/Synthetic_radioisotope" title="Synthetic radioisotope">synth</a> </td> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: right;">2.5 ms<a href="#cite_note-UtyonkovTexas2015-9">[9]</a><a href="#cite_note-284Fl-10">[10]</a> </td> <td style="text-align: left; vertical-align: top;"><a href="/wiki/Spontaneous_fission" title="Spontaneous fission">SF</a> </td> <td style="text-align: right; vertical-align: middle;">– </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><a href="/wiki/Alpha_decay" title="Alpha decay">α</a> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Copernicium-280" class="mw-redirect" title="Copernicium-280">280Cn</a> </td></tr> <tr> <th rowspan="1" style="vertical-align: top;">285Fl </th> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: center;">synth </td> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: right;">100 ms<a href="#cite_note-PuCa2017-11">[11]</a> </td> <td style="text-align: left; vertical-align: top;">α </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Copernicium-281" class="mw-redirect" title="Copernicium-281">281Cn</a> </td></tr> <tr> <th rowspan="2" style="vertical-align: top;">286Fl </th> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: center;">synth </td> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: right;">105 ms<a href="#cite_note-PuCa2022-12">[12]</a> </td> <td style="text-align: left; vertical-align: top;">α55% </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Copernicium-282" class="mw-redirect" title="Copernicium-282">282Cn</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;">SF45% </td> <td style="text-align: right; vertical-align: middle;">– </td></tr> <tr> <th rowspan="2" style="vertical-align: top;">287Fl </th> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: center;">synth </td> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: right;">360 ms<a href="#cite_note-PuCa2022-12">[12]</a> </td> <td style="text-align: left; vertical-align: top;">α </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Copernicium-283" class="mw-redirect" title="Copernicium-283">283Cn</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><a href="/wiki/Electron_capture" title="Electron capture">ε</a>?<a href="#cite_note-EXON-13">[13]</a> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Nihonium-287" class="mw-redirect" title="Nihonium-287">287Nh</a> </td></tr> <tr> <th rowspan="1" style="vertical-align: top;">288Fl </th> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: center;">synth </td> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: right;">653 ms </td> <td style="text-align: left; vertical-align: top;">α </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Copernicium-284" class="mw-redirect" title="Copernicium-284">284Cn</a> </td></tr> <tr> <th rowspan="1" style="vertical-align: top;">289Fl </th> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: center;">synth </td> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: right;">2.1 s </td> <td style="text-align: left; vertical-align: top;">α </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Copernicium-285" class="mw-redirect" title="Copernicium-285">285Cn</a> </td></tr> <tr> <th rowspan="2" style="vertical-align: top;">290Fl </th> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: center;"><a href="/wiki/Synthetic_radioisotope" title="Synthetic radioisotope">synth</a> </td> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: right;">19 s?<a href="#cite_note-Hofmann2016-14">[14]</a><a href="#cite_note-Kaji-15">[15]</a> </td> <td style="text-align: left; vertical-align: top;">EC </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Nihonium-290" class="mw-redirect" title="Nihonium-290">290Nh</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;">α </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Copernicium-286" class="mw-redirect" title="Copernicium-286">286Cn</a> </td></tr></tbody></table></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><td colspan="2" class="infobox-below noprint" style="color:inherit; background:#fdff8c"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /> <a href="/wiki/Category:Flerovium" title="Category:Flerovium">Category: Flerovium</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist"><ul><li class="nv-view"><a href="/wiki/Template:Infobox_flerovium" title="Template:Infobox flerovium">view</a></li><li class="nv-talk"><a href="/wiki/Template_talk:Infobox_flerovium" title="Template talk:Infobox flerovium">talk</a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Infobox_flerovium" title="Special:EditPage/Template:Infobox flerovium">edit</a></li></ul></div> | <a href="/wiki/List_of_data_references_for_chemical_elements" title="List of data references for chemical elements">references</a></td></tr></tbody></table> Flerovium is a <a href="/wiki/Synthetic_element" title="Synthetic element">synthetic</a> <a href="/wiki/Chemical_element" title="Chemical element">chemical element</a>; it has <a href="/wiki/Chemical_symbol" title="Chemical symbol">symbol</a> Fl and <a href="/wiki/Atomic_number" title="Atomic number">atomic number</a> 114. It is an extremely <a href="/wiki/Radioactive" class="mw-redirect" title="Radioactive">radioactive</a>, <a href="/wiki/Transactinide_element" class="mw-redirect" title="Transactinide element">superheavy</a> element, named after the Flerov Laboratory of Nuclear Reactions of the <a href="/wiki/Joint_Institute_for_Nuclear_Research" title="Joint Institute for Nuclear Research">Joint Institute for Nuclear Research</a> in <a href="/wiki/Dubna" title="Dubna">Dubna</a>, Russia, where the element was discovered in 1999. The lab's name, in turn, honours Russian physicist <a href="/wiki/Georgy_Flyorov" title="Georgy Flyorov">Georgy Flyorov</a> (Флёров in <a href="/wiki/Cyrillic_alphabet" class="mw-redirect" title="Cyrillic alphabet">Cyrillic</a>, hence the transliteration of "<a href="/wiki/Yo_(Cyrillic)" title="Yo (Cyrillic)">yo</a>" to "e"). <a href="/wiki/International_Union_of_Pure_and_Applied_Chemistry" title="International Union of Pure and Applied Chemistry">IUPAC</a> adopted the name on 30 May 2012. The name and symbol had previously been proposed for element 102 (<a href="/wiki/Nobelium" title="Nobelium">nobelium</a>), but was not accepted by IUPAC at that time. It is a transactinide in the <a href="/wiki/P-block" class="mw-redirect" title="P-block">p-block</a> of the <a href="/wiki/Periodic_table" title="Periodic table">periodic table</a>. It is in <a href="/wiki/Period_7_element" title="Period 7 element">period 7</a>, the heaviest known member of the <a href="/wiki/Carbon_group" title="Carbon group">carbon group</a>, and the last element whose chemistry has been investigated. Initial chemical studies in 2007–2008 indicated that flerovium was unexpectedly volatile for a group 14 element.<a href="#cite_note-2009ex-16">[16]</a> More recent results show that flerovium's reaction with <a href="/wiki/Gold" title="Gold">gold</a> is similar to that of <a href="/wiki/Copernicium" title="Copernicium">copernicium</a>, showing it is very <a href="/wiki/Volatility_(chemistry)" title="Volatility (chemistry)">volatile</a> and may even be <a href="/wiki/Gas" title="Gas">gaseous</a> at <a href="/wiki/Standard_temperature_and_pressure" title="Standard temperature and pressure">standard temperature and pressure</a>, that it would show <a href="/wiki/Metal" title="Metal">metallic</a> properties, consistent with being the heavier <a href="/wiki/Homologous_series" title="Homologous series">homologue</a> of <a href="/wiki/Lead" title="Lead">lead</a>, and that it would be the least reactive metal in group 14. Whether flerovium behaves more like a metal or a noble gas is still unresolved as of 2024; it might also be a semiconductor. Very little is known about flerovium, as it can only be produced one atom at a time, either through direct synthesis or through <a href="/wiki/Radioactive_decay" title="Radioactive decay">radioactive decay</a> of even heavier elements, and all known isotopes are short-lived. Six <a href="/wiki/Isotopes_of_flerovium" title="Isotopes of flerovium">isotopes of flerovium</a> are known, ranging in <a href="/wiki/Mass_number" title="Mass number">mass number</a> between 284 and 289; the most stable of these, <style data-mw-deduplicate="TemplateStyles:r1123817410">.mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:left}.mw-parser-output sub.template-chem2-sub{font-size:80%;vertical-align:-0.35em}.mw-parser-output sup.template-chem2-sup{font-size:80%;vertical-align:0.65em}</style>289Fl, has a <a href="/wiki/Half-life" title="Half-life">half-life</a> of ~2.1 seconds, but the unconfirmed <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">290Fl may have a longer half-life of 19 seconds, which would be one of the longest half-lives of any <a href="/wiki/Nuclide" title="Nuclide">nuclide</a> in these farthest reaches of the periodic table. Flerovium is predicted to be near the centre of the theorized <a href="/wiki/Island_of_stability" title="Island of stability">island of stability</a>, and it is expected that heavier flerovium isotopes, especially the possibly <a href="/wiki/Magic_number_(physics)" title="Magic number (physics)">magic</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">298Fl, may have even longer half-lives. <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Introduction">Introduction</h2>[<a href="/w/index.php?title=Flerovium&action=edit&section=1" title="Edit section: Introduction">edit</a>]</div> <div class="excerpt-block"><style data-mw-deduplicate="TemplateStyles:r1066933788">.mw-parser-output .excerpt-hat .mw-editsection-like{font-style:normal}</style><style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable dablink excerpt-hat selfref">This section is an excerpt from <a href="/wiki/Superheavy_element#Introduction" title="Superheavy element">Superheavy element § Introduction</a>.[<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Superheavy_element&action=edit">edit</a>]</div><div class="excerpt"> <div class="mw-heading mw-heading3"><h3 id="Synthesis_of_superheavy_nuclei">Synthesis of superheavy nuclei</h3>[<a href="/w/index.php?title=Module:Excerpt&action=edit&section=T-1" title="Edit section: Synthesis of superheavy nuclei">edit</a>]</div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Deuterium-tritium_fusion.svg" class="mw-file-description"><img alt="A graphic depiction of a nuclear fusion reaction" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Deuterium-tritium_fusion.svg/220px-Deuterium-tritium_fusion.svg.png" decoding="async" width="220" height="264" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Deuterium-tritium_fusion.svg/330px-Deuterium-tritium_fusion.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Deuterium-tritium_fusion.svg/440px-Deuterium-tritium_fusion.svg.png 2x" data-file-width="500" data-file-height="600" /></a><figcaption>A graphic depiction of a <a href="/wiki/Nuclear_fusion" title="Nuclear fusion">nuclear fusion</a> reaction. Two nuclei fuse into one, emitting a <a href="/wiki/Neutron" title="Neutron">neutron</a>. Reactions that created new elements to this moment were similar, with the only possible difference that several singular neutrons sometimes were released, or none at all.</figcaption></figure> A superheavy<a href="#cite_note-20">[a]</a> <a href="/wiki/Atomic_nucleus" title="Atomic nucleus">atomic nucleus</a> is created in a nuclear reaction that combines two other nuclei of unequal size<a href="#cite_note-23">[b]</a> into one; roughly, the more unequal the two nuclei in terms of <a href="/wiki/Mass" title="Mass">mass</a>, the greater the possibility that the two react.<a href="#cite_note-Superheavy_element_Bloomberg-24">[22]</a> The material made of the heavier nuclei is made into a target, which is then bombarded by the <a href="/wiki/Particle_beam" title="Particle beam">beam</a> of lighter nuclei. Two nuclei can only <a href="/wiki/Nuclear_fusion" title="Nuclear fusion">fuse</a> into one if they approach each other closely enough; normally, nuclei (all positively charged) repel each other due to <a href="/wiki/Coulomb%27s_law" title="Coulomb's law">electrostatic repulsion</a>. The <a href="/wiki/Strong_interaction" title="Strong interaction">strong interaction</a> can overcome this repulsion but only within a very short distance from a nucleus; beam nuclei are thus greatly <a href="/wiki/Particle_accelerator" title="Particle accelerator">accelerated</a> in order to make such repulsion insignificant compared to the velocity of the beam nucleus.<a href="#cite_note-Superheavy_element_n+1-25">[23]</a> The energy applied to the beam nuclei to accelerate them can cause them to reach speeds as high as one-tenth of the <a href="/wiki/Speed_of_light" title="Speed of light">speed of light</a>. However, if too much energy is applied, the beam nucleus can fall apart.<a href="#cite_note-Superheavy_element_n+1-25">[23]</a> Coming close enough alone is not enough for two nuclei to fuse: when two nuclei approach each other, they usually remain together for about 10−20 seconds and then part ways (not necessarily in the same composition as before the reaction) rather than form a single nucleus.<a href="#cite_note-Superheavy_element_n+1-25">[23]</a><a href="#cite_note-26">[24]</a> This happens because during the attempted formation of a single nucleus, electrostatic repulsion tears apart the nucleus that is being formed.<a href="#cite_note-Superheavy_element_n+1-25">[23]</a> Each pair of a target and a beam is characterized by its <a href="/wiki/Cross_section_(physics)" title="Cross section (physics)">cross section</a>—the probability that fusion will occur if two nuclei approach one another expressed in terms of the transverse area that the incident particle must hit in order for the fusion to occur.<a href="#cite_note-28">[c]</a> This fusion may occur as a result of the quantum effect in which nuclei can <a href="/wiki/Quantum_tunnelling#Nuclear_fusion" title="Quantum tunnelling">tunnel</a> through electrostatic repulsion. If the two nuclei can stay close past that phase, multiple nuclear interactions result in redistribution of energy and an energy equilibrium.<a href="#cite_note-Superheavy_element_n+1-25">[23]</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox" style="width: 230px; clear: left; float:left;margin:0 1.5em 1.5em 0;"><tbody><tr><th colspan="2" class="infobox-above" style="font-size:115%">External videos</th></tr><tr><td colspan="2" class="infobox-full-data" style="text-align: left"><img alt="video icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Nuvola_apps_kaboodle.svg/16px-Nuvola_apps_kaboodle.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Nuvola_apps_kaboodle.svg/24px-Nuvola_apps_kaboodle.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Nuvola_apps_kaboodle.svg/32px-Nuvola_apps_kaboodle.svg.png 2x" data-file-width="128" data-file-height="128" /> <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=YovAFlzFtzg">Visualization</a> of unsuccessful nuclear fusion, based on calculations from the <a href="/wiki/Australian_National_University" title="Australian National University">Australian National University</a><a href="#cite_note-29">[26]</a></td></tr></tbody></table> The resulting merger is an <a href="/wiki/Excited_state" title="Excited state">excited state</a><a href="#cite_note-30">[27]</a>—termed a <a href="/wiki/Nuclear_reaction#Compound_nuclear_reactions" title="Nuclear reaction">compound nucleus</a>—and thus it is very unstable.<a href="#cite_note-Superheavy_element_n+1-25">[23]</a> To reach a more stable state, the temporary merger may <a href="/wiki/Nuclear_fission" title="Nuclear fission">fission</a> without formation of a more stable nucleus.<a href="#cite_note-Superheavy_element_CzechNuclear-31">[28]</a> Alternatively, the compound nucleus may eject a few <a href="/wiki/Neutron" title="Neutron">neutrons</a>, which would carry away the excitation energy; if the latter is not sufficient for a neutron expulsion, the merger would produce a <a href="/wiki/Gamma_ray" title="Gamma ray">gamma ray</a>. This happens in about 10−16 seconds after the initial nuclear collision and results in creation of a more stable nucleus.<a href="#cite_note-Superheavy_element_CzechNuclear-31">[28]</a> The definition by the <a href="/wiki/IUPAC/IUPAP_Joint_Working_Party" title="IUPAC/IUPAP Joint Working Party">IUPAC/IUPAP Joint Working Party</a> (JWP) states that a <a href="/wiki/Chemical_element" title="Chemical element">chemical element</a> can only be recognized as discovered if a nucleus of it has not <a href="/wiki/Radioactive_decay" title="Radioactive decay">decayed</a> within 10−14 seconds. This value was chosen as an estimate of how long it takes a nucleus to acquire <a href="/wiki/Electron" title="Electron">electrons</a> and thus display its chemical properties.<a href="#cite_note-32">[29]</a><a href="#cite_note-34">[d]</a> <div class="mw-heading mw-heading3"><h3 id="Decay_and_detection">Decay and detection</h3>[<a href="/w/index.php?title=Module:Excerpt&action=edit&section=T-2" title="Edit section: Decay and detection">edit</a>]</div> The beam passes through the target and reaches the next chamber, the separator; if a new nucleus is produced, it is carried with this beam.<a href="#cite_note-Superheavy_element_SHEhowvideo-35">[31]</a> In the separator, the newly produced nucleus is separated from other nuclides (that of the original beam and any other reaction products)<a href="#cite_note-38">[e]</a> and transferred to a <a href="/wiki/Semiconductor_detector" title="Semiconductor detector">surface-barrier detector</a>, which stops the nucleus. The exact location of the upcoming impact on the detector is marked; also marked are its energy and the time of the arrival.<a href="#cite_note-Superheavy_element_SHEhowvideo-35">[31]</a> The transfer takes about 10−6 seconds; in order to be detected, the nucleus must survive this long.<a href="#cite_note-FOOTNOTEZagrebaevKarpovGreiner20133-39">[34]</a> The nucleus is recorded again once its decay is registered, and the location, the <a href="/wiki/Decay_energy" title="Decay energy">energy</a>, and the time of the decay are measured.<a href="#cite_note-Superheavy_element_SHEhowvideo-35">[31]</a> Stability of a nucleus is provided by the strong interaction. However, its range is very short; as nuclei become larger, its influence on the outermost <a href="/wiki/Nucleon" title="Nucleon">nucleons</a> (<a href="/wiki/Proton" title="Proton">protons</a> and neutrons) weakens. At the same time, the nucleus is torn apart by electrostatic repulsion between protons, and its range is not limited.<a href="#cite_note-FOOTNOTEBeiser2003432-40">[35]</a> Total <a href="/wiki/Nuclear_binding_energy" title="Nuclear binding energy">binding energy</a> provided by the strong interaction increases linearly with the number of nucleons, whereas electrostatic repulsion increases with the square of the atomic number, i.e. the latter grows faster and becomes increasingly important for heavy and superheavy nuclei.<a href="#cite_note-Superheavy_element_BrusselsAlpha-41">[36]</a><a href="#cite_note-Superheavy_element_BrusselsSF-42">[37]</a> Superheavy nuclei are thus theoretically predicted<a href="#cite_note-43">[38]</a> and have so far been observed<a href="#cite_note-FOOTNOTEAudi_et_al.2017030001-129–030001-138-44">[39]</a> to predominantly decay via decay modes that are caused by such repulsion: <a href="/wiki/Alpha_decay" title="Alpha decay">alpha decay</a> and <a href="/wiki/Spontaneous_fission" title="Spontaneous fission">spontaneous fission</a>.<a href="#cite_note-46">[f]</a> Almost all alpha emitters have over 210 nucleons,<a href="#cite_note-FOOTNOTEBeiser2003433-47">[41]</a> and the lightest nuclide primarily undergoing spontaneous fission has 238.<a href="#cite_note-FOOTNOTEAudi_et_al.2017030001-125-48">[42]</a> In both decay modes, nuclei are inhibited from decaying by corresponding <a href="/wiki/Rectangular_potential_barrier" title="Rectangular potential barrier">energy barriers</a> for each mode, but they can be tunneled through.<a href="#cite_note-Superheavy_element_BrusselsAlpha-41">[36]</a><a href="#cite_note-Superheavy_element_BrusselsSF-42">[37]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Apparatus_for_creation_of_superheavy_elements_en.svg" class="mw-file-description"><img alt="Apparatus for creation of superheavy elements" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/Apparatus_for_creation_of_superheavy_elements_en.svg/440px-Apparatus_for_creation_of_superheavy_elements_en.svg.png" decoding="async" width="440" height="161" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/Apparatus_for_creation_of_superheavy_elements_en.svg/660px-Apparatus_for_creation_of_superheavy_elements_en.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/34/Apparatus_for_creation_of_superheavy_elements_en.svg/880px-Apparatus_for_creation_of_superheavy_elements_en.svg.png 2x" data-file-width="600" data-file-height="220" /></a><figcaption>Scheme of an apparatus for creation of superheavy elements, based on the Dubna Gas-Filled Recoil Separator set up in the <a href="/wiki/Flerov_Laboratory_of_Nuclear_Reactions" class="mw-redirect" title="Flerov Laboratory of Nuclear Reactions">Flerov Laboratory of Nuclear Reactions</a> in JINR. The trajectory within the detector and the beam focusing apparatus changes because of a <a href="/wiki/Magnetic_dipole" title="Magnetic dipole">dipole magnet</a> in the former and <a href="/wiki/Quadrupole_magnet" title="Quadrupole magnet">quadrupole magnets</a> in the latter.<a href="#cite_note-Superheavy_element_Aksenov-49">[43]</a></figcaption></figure> Alpha particles are commonly produced in radioactive decays because the mass of an alpha particle per nucleon is small enough to leave some energy for the alpha particle to be used as kinetic energy to leave the nucleus.<a href="#cite_note-FOOTNOTEBeiser2003432–433-50">[44]</a> Spontaneous fission is caused by electrostatic repulsion tearing the nucleus apart and produces various nuclei in different instances of identical nuclei fissioning.<a href="#cite_note-Superheavy_element_BrusselsSF-42">[37]</a> As the atomic number increases, spontaneous fission rapidly becomes more important: spontaneous fission partial half-lives decrease by 23 orders of magnitude from <a href="/wiki/Uranium" title="Uranium">uranium</a> (element 92) to <a href="/wiki/Nobelium" title="Nobelium">nobelium</a> (element 102),<a href="#cite_note-Superheavy_element_Oganessian12-51">[45]</a> and by 30 orders of magnitude from <a href="/wiki/Thorium" title="Thorium">thorium</a> (element 90) to <a href="/wiki/Fermium" title="Fermium">fermium</a> (element 100).<a href="#cite_note-52">[46]</a> The earlier <a href="/wiki/Liquid_drop_model" class="mw-redirect" title="Liquid drop model">liquid drop model</a> thus suggested that spontaneous fission would occur nearly instantly due to disappearance of the <a href="/wiki/Fission_barrier" title="Fission barrier">fission barrier</a> for nuclei with about 280 nucleons.<a href="#cite_note-Superheavy_element_BrusselsSF-42">[37]</a><a href="#cite_note-Superheavy_element_Oganessian04-53">[47]</a> The later <a href="/wiki/Nuclear_shell_model" title="Nuclear shell model">nuclear shell model</a> suggested that nuclei with about 300 nucleons would form an <a href="/wiki/Island_of_stability" title="Island of stability">island of stability</a> in which nuclei will be more resistant to spontaneous fission and will primarily undergo alpha decay with longer half-lives.<a href="#cite_note-Superheavy_element_BrusselsSF-42">[37]</a><a href="#cite_note-Superheavy_element_Oganessian04-53">[47]</a> Subsequent discoveries suggested that the predicted island might be further than originally anticipated; they also showed that nuclei intermediate between the long-lived actinides and the predicted island are deformed, and gain additional stability from shell effects.<a href="#cite_note-54">[48]</a> Experiments on lighter superheavy nuclei,<a href="#cite_note-55">[49]</a> as well as those closer to the expected island,<a href="#cite_note-Superheavy_element_Oganessian12-51">[45]</a> have shown greater than previously anticipated stability against spontaneous fission, showing the importance of shell effects on nuclei.<a href="#cite_note-56">[g]</a> Alpha decays are registered by the emitted alpha particles, and the decay products are easy to determine before the actual decay; if such a decay or a series of consecutive decays produces a known nucleus, the original product of a reaction can be easily determined.<a href="#cite_note-60">[h]</a> (That all decays within a decay chain were indeed related to each other is established by the location of these decays, which must be in the same place.)<a href="#cite_note-Superheavy_element_SHEhowvideo-35">[31]</a> The known nucleus can be recognized by the specific characteristics of decay it undergoes such as decay energy (or more specifically, the <a href="/wiki/Kinetic_energy" title="Kinetic energy">kinetic energy</a> of the emitted particle).<a href="#cite_note-61">[i]</a> Spontaneous fission, however, produces various nuclei as products, so the original nuclide cannot be determined from its daughters.<a href="#cite_note-64">[j]</a> The information available to physicists aiming to synthesize a superheavy element is thus the information collected at the detectors: location, energy, and time of arrival of a particle to the detector, and those of its decay. The physicists analyze this data and seek to conclude that it was indeed caused by a new element and could not have been caused by a different nuclide than the one claimed. Often, provided data is insufficient for a conclusion that a new element was definitely created and there is no other explanation for the observed effects; errors in interpreting data have been made.<a href="#cite_note-70">[k]</a></div></div> <div class="mw-heading mw-heading2"><h2 id="History">History</h2>[<a href="/w/index.php?title=Flerovium&action=edit&section=2" title="Edit section: History">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Discovery_of_the_chemical_elements" class="mw-redirect" title="Discovery of the chemical elements">Discovery of the chemical elements</a></div> <div class="mw-heading mw-heading3"><h3 id="Pre-discovery">Pre-discovery</h3>[<a href="/w/index.php?title=Flerovium&action=edit&section=3" title="Edit section: Pre-discovery">edit</a>]</div> In the late 1940s to early 1960s, the early days of making heavier and heavier <a href="/wiki/Transuranic_element" class="mw-redirect" title="Transuranic element">transuranic elements</a>, it was predicted that since such elements did not occur naturally, they would have shorter and shorter <a href="/wiki/Spontaneous_fission" title="Spontaneous fission">spontaneous fission</a> half-lives, until they stopped existing altogether around element 108 (now called <a href="/wiki/Hassium" title="Hassium">hassium</a>). Initial work in synthesizing the heavier <a href="/wiki/Actinide" title="Actinide">actinides</a> seemed to confirm this.<a href="#cite_note-Sacks-71">[60]</a> But the <a href="/wiki/Nuclear_shell_model" title="Nuclear shell model">nuclear shell model</a>, introduced in 1949 and extensively developed in the late 1960s by William Myers and <a href="/wiki/W%C5%82adys%C5%82aw_%C5%9Awi%C4%85tecki_(physicist)" title="Władysław Świątecki (physicist)">Władysław Świątecki</a>, stated that <a href="/wiki/Proton" title="Proton">protons</a> and <a href="/wiki/Neutron" title="Neutron">neutrons</a> form shells within a nucleus, analogous to <a href="/wiki/Electron_shell" title="Electron shell">electron shells</a>. <a href="/wiki/Noble_gas" title="Noble gas">Noble gases</a> are <a href="/wiki/Reactivity_(chemistry)" title="Reactivity (chemistry)">unreactive</a> due to a full electron shell; similarly, it was theorized that elements with full nuclear shells – those having "<a href="/wiki/Magic_number_(physics)" title="Magic number (physics)">magic</a>" numbers of protons or neutrons – would be stabilized against <a href="/wiki/Radioactive_decay" title="Radioactive decay">decay</a>. A doubly magic <a href="/wiki/Isotope" title="Isotope">isotope</a>, with magic numbers of both protons and neutrons, would be especially stabilized. Heiner Meldner calculated in 1965 that the next doubly magic isotope after <a href="/wiki/Lead-208" class="mw-redirect" title="Lead-208"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">208Pb</a> was <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">298Fl with 114 protons and 184 neutrons, which would be the centre of an "<a href="/wiki/Island_of_stability" title="Island of stability">island of stability</a>".<a href="#cite_note-Sacks-71">[60]</a><a href="#cite_note-quest-72">[61]</a> This island of stability, supposedly from <a href="/wiki/Copernicium" title="Copernicium">copernicium</a> (Z = 112) to <a href="/wiki/Oganesson" title="Oganesson">oganesson</a> (Z = 118), would come after a long "sea of instability" from <a href="/wiki/Mendelevium" title="Mendelevium">mendelevium</a> (Z = 101) to <a href="/wiki/Roentgenium" title="Roentgenium">roentgenium</a> (Z = 111),<a href="#cite_note-Sacks-71">[60]</a> and the flerovium isotopes in it were speculated in 1966 to have half-lives over 108 years.<a href="#cite_note-emsley-73">[62]</a> These early predictions fascinated researchers, and led to the first attempt to make flerovium, in 1968 with the reaction <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">248Cm(40Ar,xn). No flerovium atoms were detected; this was thought to be because the compound nucleus <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">288Fl only has 174 neutrons instead of the supposed magic 184, and this would have significant impact on the reaction <a href="/wiki/Cross_section_(physics)" title="Cross section (physics)">cross section</a> (yield) and half-lives of nuclei produced.<a href="#cite_note-Transuraniumppl-74">[63]</a><a href="#cite_note-superlourds-75">[64]</a> It was then 30 more years before flerovium was first made.<a href="#cite_note-Sacks-71">[60]</a> Later work suggests the islands of stability around hassium and flerovium occur because these nuclei are respectively deformed and <a href="/wiki/Oblate_spheroid" class="mw-redirect" title="Oblate spheroid">oblate</a>, which make them resistant to spontaneous fission, and that the true island of stability for spherical nuclei occurs at around <a href="/wiki/Unbibium" title="Unbibium">unbibium</a>-306 (122 protons, 184 neutrons).<a href="#cite_note-Kratz-76">[65]</a> In the 1970s and 1980s, theoretical studies debated whether element 114 would be a more volatile metal like lead, or an inert gas.<a href="#cite_note-tanm-77">[66]</a> <div class="mw-heading mw-heading3"><h3 id="First_signs">First signs</h3>[<a href="/w/index.php?title=Flerovium&action=edit&section=4" title="Edit section: First signs">edit</a>]</div> The first sign of flerovium was found in December 1998 by a team of scientists at <a href="/wiki/Joint_Institute_for_Nuclear_Research" title="Joint Institute for Nuclear Research">Joint Institute for Nuclear Research</a> (JINR), <a href="/wiki/Dubna" title="Dubna">Dubna</a>, Russia, led by <a href="/wiki/Yuri_Oganessian" title="Yuri Oganessian">Yuri Oganessian</a>, who bombarded a target of <a href="/wiki/Plutonium-244" title="Plutonium-244">plutonium-244</a> with accelerated nuclei of <a href="/wiki/Calcium-48" title="Calcium-48">calcium-48</a>: <dl><dd>244 94Pu + 48 20Ca → 292 114Fl * → 290 114Fl + 2 1 0n </dd></dl> This reaction had been tried before, without success; for this 1998 attempt, JINR had upgraded all of its equipment to detect and separate the produced atoms better and bombard the target more intensely.<a href="#cite_note-Chapman-78">[67]</a> One atom of flerovium, <a href="/wiki/Alpha_decay" title="Alpha decay">alpha decaying</a> with lifetime 30.4 s, was detected. The <a href="/wiki/Decay_energy" title="Decay energy">decay energy</a> measured was 9.71 <a href="/wiki/Electronvolt" title="Electronvolt">MeV</a>, giving an expected half-life of 2–23 s.<a href="#cite_note-99Og01-79">[68]</a> This observation was assigned to <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">289Fl and was published in January 1999.<a href="#cite_note-99Og01-79">[68]</a> The experiment was later repeated, but an isotope with these decay properties was never observed again, so the exact identity of this activity is unknown. It may have been due to the <a href="/wiki/Nuclear_isomer" title="Nuclear isomer">isomer</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">289mFl,<a href="#cite_note-00Og01-80">[69]</a><a href="#cite_note-04OgJINRPP-81">[70]</a> but because the presence of a whole series of longer-lived isomers in its decay chain would be rather doubtful, the most likely assignment of this chain is to the 2n channel leading to <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">290Fl and electron capture to <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">290Nh. This fits well with the systematics and trends of flerovium isotopes, and is consistent with the low beam energy chosen for that experiment, though further confirmation would be desirable via synthesis of <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">294Lv in a 248Cm(48Ca,2n) reaction, which would alpha decay to <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">290Fl.<a href="#cite_note-Hofmann2016-14">[14]</a> The <a href="/wiki/RIKEN" class="mw-redirect" title="RIKEN">RIKEN</a> team reported possible synthesis of isotopes <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">294Lv and <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">290Fl in 2016 in a 248Cm(48Ca,2n) reaction, but the alpha decay of <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">294Lv was missed, alpha decay of <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">290Fl to <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">286Cn was observed instead of electron capture to <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">290Nh, and the assignment to <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">294Lv instead of <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">293Lv was not certain.<a href="#cite_note-Kaji-15">[15]</a> <a href="/wiki/Glenn_T._Seaborg" title="Glenn T. Seaborg">Glenn T. Seaborg</a>, a scientist at <a href="/wiki/Lawrence_Berkeley_National_Laboratory" title="Lawrence Berkeley National Laboratory">Lawrence Berkeley National Laboratory</a> who had been involved in work to make such superheavy elements, had said in December 1997 that "one of his longest-lasting and most cherished dreams was to see one of these magic elements";<a href="#cite_note-Sacks-71">[60]</a> he was told of the synthesis of flerovium by his colleague <a href="/wiki/Albert_Ghiorso" title="Albert Ghiorso">Albert Ghiorso</a> soon after its publication in 1999. Ghiorso later recalled:<a href="#cite_note-Seaborg-obituary-82">[71]</a> <style data-mw-deduplicate="TemplateStyles:r1244412712">.mw-parser-output .templatequote{overflow:hidden;margin:1em 0;padding:0 32px}.mw-parser-output .templatequotecite{line-height:1.5em;text-align:left;margin-top:0}@media(min-width:500px){.mw-parser-output .templatequotecite{padding-left:1.6em}}</style><blockquote class="templatequote">I wanted Glenn to know, so I went to his bedside and told him. I thought I saw a gleam in his eye, but the next day when I went to visit him he didn't remember seeing me. As a scientist, he had died when he had that stroke.<a href="#cite_note-Seaborg-obituary-82">[71]</a><div class="templatequotecite">— <cite>Albert Ghiorso</cite></div></blockquote> Seaborg died two months later, on 25 February 1999.<a href="#cite_note-Seaborg-obituary-82">[71]</a> In March 1999, the same team replaced the <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">244Pu target with <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">242Pu to make other flerovium isotopes. Two atoms of flerovium were produced as a result, each alpha-decaying with a half-life of 5.5 s. They were assigned as <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">287Fl.<a href="#cite_note-99Og02-83">[72]</a> This activity has not been seen again either, and it is unclear what nucleus was produced. It is possible that it was an isomer 287mFl<a href="#cite_note-04Og01-84">[73]</a> or from electron capture by 287Fl, leading to 287Nh and 283Rg.<a href="#cite_note-EXON1-85">[74]</a> <div class="mw-heading mw-heading3"><h3 id="Confirmed_discovery">Confirmed discovery</h3>[<a href="/w/index.php?title=Flerovium&action=edit&section=5" title="Edit section: Confirmed discovery">edit</a>]</div> The now-confirmed discovery of flerovium was made in June 1999 when the Dubna team repeated the first reaction from 1998. This time, two atoms of flerovium were produced; they alpha decayed with half-life 2.6 s, different from the 1998 result.<a href="#cite_note-00Og01-80">[69]</a> This activity was initially assigned to 288Fl in error, due to the confusion regarding the previous observations that were assumed to come from 289Fl. Further work in December 2002 finally allowed a positive reassignment of the June 1999 atoms to 289Fl.<a href="#cite_note-04Og01-84">[73]</a> In May 2009, the Joint Working Party (JWP) of <a href="/wiki/IUPAC" class="mw-redirect" title="IUPAC">IUPAC</a> published a report on the discovery of copernicium in which they acknowledged discovery of the isotope 283Cn.<a href="#cite_note-86">[75]</a> This implied the discovery of flerovium, from the acknowledgement of the data for the synthesis of 287Fl and 291<a href="/wiki/Livermorium" title="Livermorium">Lv</a>, which decay to 283Cn. The discovery of flerovium-286 and -287 was confirmed in January 2009 at Berkeley. This was followed by confirmation of flerovium-288 and -289 in July 2009 at <a href="/wiki/Gesellschaft_f%C3%BCr_Schwerionenforschung" class="mw-redirect" title="Gesellschaft für Schwerionenforschung">Gesellschaft für Schwerionenforschung</a> (GSI) in Germany. In 2011, IUPAC evaluated the Dubna team's 1999–2007 experiments. They found the early data inconclusive, but accepted the results of 2004–2007 as flerovium, and the element was officially recognized as having been discovered.<a href="#cite_note-jwr-87">[76]</a> <div class="mw-heading mw-heading3"><h3 id="Isotopes">Isotopes</h3>[<a href="/w/index.php?title=Flerovium&action=edit&section=6" title="Edit section: Isotopes">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Isotopes_of_flerovium" title="Isotopes of flerovium">Isotopes of flerovium</a></div> <table class="wikitable sortable floatright" style="text-align:right;max-width:100%; font-size: 85%"> <caption>List of flerovium isotopes <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Isotopes_summary" title="Template:Isotopes summary"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Isotopes_summary" title="Template talk:Isotopes summary"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Isotopes_summary" title="Special:EditPage/Template:Isotopes summary"><abbr title="Edit this template">e</abbr></a></li></ul></div> </caption> <tbody><tr> <th rowspan="2">Isotope </th> <th colspan="2">Half-life<a href="#cite_note-88">[l]</a> </th> <th rowspan="2">Decay mode </th> <th rowspan="2">Discovery year </th> <th rowspan="2">Discovery reaction </th></tr> <tr> <th>Value </th> <th class="unsortable">ref </th></tr> <tr> <th style="text-align:left">284Fl </th> <td>2.5 ms</td> <td><a href="#cite_note-284Fl-10">[10]</a> </td> <td style="text-align:left">SF, α </td> <td style="text-align:center">2015 </td> <td style="text-align:left">240Pu(48Ca,4n) 239Pu(48Ca,3n) </td></tr> <tr> <th style="text-align:left">285Fl </th> <td>100 ms</td> <td><a href="#cite_note-PuCa2017-11">[11]</a> </td> <td style="text-align:left">α </td> <td style="text-align:center">2010 </td> <td style="text-align:left">242Pu(48Ca,5n) </td></tr> <tr> <th style="text-align:left">286Fl </th> <td>105 ms</td> <td><a href="#cite_note-PuCa2022-12">[12]</a> </td> <td style="text-align:left">α, SF </td> <td style="text-align:center">2003 </td> <td style="text-align:left">290Lv(—,α) </td></tr> <tr> <th style="text-align:left">287Fl </th> <td>360 ms</td> <td><a href="#cite_note-PuCa2022-12">[12]</a> </td> <td style="text-align:left">α, EC? </td> <td style="text-align:center">2003 </td> <td style="text-align:left">244Pu(48Ca,5n) </td></tr> <tr> <th style="text-align:left">288Fl </th> <td>660 ms</td> <td><a href="#cite_note-shesummary-89">[77]</a> </td> <td style="text-align:left">α </td> <td style="text-align:center">2004 </td> <td style="text-align:left">244Pu(48Ca,4n) </td></tr> <tr> <th style="text-align:left">289Fl </th> <td>1.9 s</td> <td><a href="#cite_note-shesummary-89">[77]</a> </td> <td style="text-align:left">α </td> <td style="text-align:center">1999 </td> <td style="text-align:left">244Pu(48Ca,3n) </td></tr> <tr> <th style="text-align:left">289mFl<a href="#cite_note-nc-90">[m]</a> </th> <td>1.1 s</td> <td><a href="#cite_note-NUBASE2016-91">[78]</a> </td> <td style="text-align:left">α </td> <td style="text-align:center">2012 </td> <td style="text-align:left">293mLv(—,α) </td></tr> <tr> <th style="text-align:left">290Fl<a href="#cite_note-nc-90">[m]</a> </th> <td>19 s</td> <td><a href="#cite_note-Hofmann2016-14">[14]</a><a href="#cite_note-Kaji-15">[15]</a> </td> <td style="text-align:left">α, EC? </td> <td style="text-align:center">1998 </td> <td style="text-align:left">244Pu(48Ca,2n) </td></tr></tbody></table> While the method of chemical characterization of a daughter was successful for flerovium and livermorium, and the simpler structure of <a href="/wiki/Even%E2%80%93even_nuclei" class="mw-redirect" title="Even–even nuclei">even–even nuclei</a> made confirmation of oganesson (Z = 118) straightforward, there have been difficulties in establishing the congruence of decay chains from isotopes with odd protons, odd neutrons, or both.<a href="#cite_note-92">[79]</a><a href="#cite_note-93">[80]</a> To get around this problem with hot fusion, the decay chains from which terminate in spontaneous fission instead of connecting to known nuclei as cold fusion allows, experiments were done in Dubna in 2015 to produce lighter isotopes of flerovium by reaction of 48Ca with 239Pu and 240Pu, particularly 283Fl, 284Fl, and 285Fl; the last had previously been characterized in the 242Pu(48Ca,5n)285Fl reaction at <a href="/wiki/Lawrence_Berkeley_National_Laboratory" title="Lawrence Berkeley National Laboratory">Lawrence Berkeley National Laboratory</a> in 2010. 285Fl was more clearly characterized, while the new isotope 284Fl was found to undergo immediate spontaneous fission, and 283Fl was not observed.<a href="#cite_note-284Fl-10">[10]</a> This lightest isotope may yet conceivably be produced in the cold fusion reaction 208Pb(76Ge,n)283Fl,<a href="#cite_note-Hofmann2016-14">[14]</a> which the team at <a href="/wiki/RIKEN" class="mw-redirect" title="RIKEN">RIKEN</a> in Japan at one point considered investigating:<a href="#cite_note-morita-94">[81]</a><a href="#cite_note-morimoto-95">[82]</a> this reaction is expected to have a higher cross-section of 200 fb than the "world record" low of 30 fb for 209Bi(70Zn,n)278Nh, the reaction which RIKEN used for the official discovery of element 113 (<a href="/wiki/Nihonium" title="Nihonium">nihonium</a>).<a href="#cite_note-Hofmann2016-14">[14]</a><a href="#cite_note-Zagrebaev-96">[83]</a><a href="#cite_note-97">[84]</a> Alternatively, it might be produced in future as a great-granddaughter of 295<a href="/wiki/Unbinilium" title="Unbinilium">120</a>, reachable in the 249Cf(50Ti,4n) reaction.<a href="#cite_note-jinr2024-98">[85]</a> The reaction 239Pu+48Ca has also been suggested as a means to produce 282Fl and 283Fl in the 5n and 4n channels respectively, but so far only the 3n channel leading to 284Fl has been observed.<a href="#cite_note-Zagrebaev-96">[83]</a> The Dubna team repeated their investigation of the 240Pu+48Ca reaction in 2017, observing three new consistent decay chains of 285Fl, another decay chain from this nuclide that may pass through some isomeric states in its daughters, a chain that could be assigned to 287Fl (likely from 242Pu impurities in the target), and some spontaneous fissions of which some could be from 284Fl, though other interpretations including side reactions involving evaporation of charged particles are also possible.<a href="#cite_note-PuCa2017-11">[11]</a> The alpha decay of 284Fl to spontaneously fissioning 280Cn was finally observed by the Dubna team in 2024.<a href="#cite_note-jinr2024-98">[85]</a> <div class="mw-heading mw-heading3"><h3 id="Naming">Naming</h3>[<a href="/w/index.php?title=Flerovium&action=edit&section=7" title="Edit section: Naming">edit</a>]</div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:RUSMARKA-1660.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/RUSMARKA-1660.jpg/220px-RUSMARKA-1660.jpg" decoding="async" width="220" height="157" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/RUSMARKA-1660.jpg/330px-RUSMARKA-1660.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/76/RUSMARKA-1660.jpg/440px-RUSMARKA-1660.jpg 2x" data-file-width="674" data-file-height="482" /></a><figcaption>Stamp of Russia, issued in 2013, dedicated to <a href="/wiki/Georgy_Flyorov" title="Georgy Flyorov">Georgy Flyorov</a> and flerovium</figcaption></figure> Per <a href="/wiki/Mendeleev%27s_predicted_elements" title="Mendeleev's predicted elements">Mendeleev's nomenclature for unnamed and undiscovered elements</a>, flerovium is sometimes called eka-<a href="/wiki/Lead" title="Lead">lead</a>. In 1979, IUPAC published recommendations according to which the element was to be called ununquadium (symbol Uuq),<a href="#cite_note-iupac-99">[86]</a> a <a href="/wiki/Systematic_element_name" title="Systematic element name">systematic element name</a> as a <a href="/wiki/Placeholder_name" title="Placeholder name">placeholder</a>, until the discovery of the element is confirmed and a permanent name is decided on. Most scientists in the field called it "element 114", with the symbol of E114, (114) or 114.<a href="#cite_note-Haire-3">[3]</a> Per IUPAC recommendations, the discoverer(s) of a new element has the right to suggest a name.<a href="#cite_note-100">[87]</a> After IUPAC recognized the discovery of flerovium and livermorium on 1 June 2011, IUPAC asked the discovery team at JINR to suggest permanent names for the two elements. The Dubna team chose the name flerovium (symbol Fl),<a href="#cite_note-101">[88]</a><a href="#cite_note-livesc-102">[89]</a> after Russia's <a href="/wiki/Flerov_Laboratory_of_Nuclear_Reactions" class="mw-redirect" title="Flerov Laboratory of Nuclear Reactions">Flerov Laboratory of Nuclear Reactions</a> (FLNR), named after Soviet physicist <a href="/wiki/Georgy_Flyorov" title="Georgy Flyorov">Georgy Flyorov</a> (also spelled Flerov); earlier reports claim the element name was directly proposed to honour Flyorov.<a href="#cite_note-E114&116-103">[90]</a> In accordance with the proposal received from the discoverers, IUPAC officially named flerovium after Flerov Laboratory of Nuclear Reactions, not after Flyorov himself.<a href="#cite_note-IUPAC-names-114-116-8">[8]</a> Flyorov is known for writing to <a href="/wiki/Joseph_Stalin" title="Joseph Stalin">Joseph Stalin</a> in April 1942 and pointing out the silence in scientific journals in the field of <a href="/wiki/Nuclear_fission" title="Nuclear fission">nuclear fission</a> in the United States, Great Britain, and Germany. Flyorov deduced that this research must have become <a href="/wiki/Classified_information" title="Classified information">classified information</a> in those countries. Flyorov's work and urgings led to the development of the USSR's own <a href="/wiki/Soviet_atomic_bomb_project" title="Soviet atomic bomb project">atomic bomb project</a>.<a href="#cite_note-livesc-102">[89]</a> Flyorov is also known for the discovery of <a href="/wiki/Spontaneous_fission" title="Spontaneous fission">spontaneous fission</a> with <a href="/wiki/Konstantin_Petrzhak" title="Konstantin Petrzhak">Konstantin Petrzhak</a>. The naming ceremony for flerovium and livermorium was held on 24 October 2012 in Moscow.<a href="#cite_note-104">[91]</a> In a 2015 interview with Oganessian, the host, in preparation to ask a question, said, "You said you had dreamed to name [an element] after your teacher Georgy Flyorov." Without letting the host finish, Oganessian repeatedly said, "I did."<a href="#cite_note-OTR-105">[92]</a> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading2"><h2 id="Predicted_properties">Predicted properties</h2>[<a href="/w/index.php?title=Flerovium&action=edit&section=8" title="Edit section: Predicted properties">edit</a>]</div> Very few properties of flerovium or its compounds have been measured; due to its extremely limited and expensive production<a href="#cite_note-Superheavy_element_Bloomberg-24">[22]</a> and the fact that it decays very quickly. A few singular properties have been measured, but for the most part, properties of flerovium remain unknown and only predictions are available. <div class="mw-heading mw-heading3"><h3 id="Nuclear_stability_and_isotopes">Nuclear stability and isotopes</h3>[<a href="/w/index.php?title=Flerovium&action=edit&section=9" title="Edit section: Nuclear stability and isotopes">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Isotopes_of_flerovium" title="Isotopes of flerovium">Isotopes of flerovium</a></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:IBA_nuclear_shells.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/IBA_nuclear_shells.svg/350px-IBA_nuclear_shells.svg.png" decoding="async" width="350" height="328" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/IBA_nuclear_shells.svg/525px-IBA_nuclear_shells.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/IBA_nuclear_shells.svg/700px-IBA_nuclear_shells.svg.png 2x" data-file-width="509" data-file-height="477" /></a><figcaption>Regions of differently shaped nuclei, as predicted by the <a href="/wiki/Interacting_boson_model" title="Interacting boson model">interacting boson model</a><a href="#cite_note-Kratz-76">[65]</a></figcaption></figure> The basis of the chemical <a href="/wiki/Periodic_trends" title="Periodic trends">periodicity</a> in the periodic table is the electron shell closure at each noble gas (<a href="/wiki/Atomic_number" title="Atomic number">atomic numbers</a> <a href="/wiki/Helium" title="Helium">2</a>, <a href="/wiki/Neon" title="Neon">10</a>, <a href="/wiki/Argon" title="Argon">18</a>, <a href="/wiki/Krypton" title="Krypton">36</a>, <a href="/wiki/Xenon" title="Xenon">54</a>, <a href="/wiki/Radon" title="Radon">86</a>, and <a href="/wiki/Oganesson" title="Oganesson">118</a>): as any further electrons must enter a new shell with higher energy, closed-shell electron configurations are markedly more stable, hence the inertness of noble gases.<a href="#cite_note-Fricke1971-106">[93]</a> Protons and neutrons are also known to form closed nuclear shells, so the same happens at nucleon shell closures, which happen at specific nucleon numbers often dubbed "magic numbers". The known magic numbers are 2, 8, 20, 28, 50, and 82 for protons and neutrons; also 126 for neutrons.<a href="#cite_note-Fricke1971-106">[93]</a> Nuclei with magic proton and <a href="/wiki/Neutron_number" title="Neutron number">neutron numbers</a>, such as <a href="/wiki/Helium-4" title="Helium-4">helium-4</a>, <a href="/wiki/Oxygen-16" title="Oxygen-16">oxygen-16</a>, <a href="/wiki/Calcium-48" title="Calcium-48">calcium-48</a>, and <a href="/wiki/Lead-208" class="mw-redirect" title="Lead-208">lead-208</a>, are "doubly magic" and are very stable. This stability is very important for <a href="/wiki/Superheavy_element" title="Superheavy element">superheavy elements</a>: with no stabilization, half-lives would be expected by exponential extrapolation to be <a href="/wiki/Nanosecond" title="Nanosecond">nanoseconds</a> at <a href="/wiki/Darmstadtium" title="Darmstadtium">darmstadtium</a> (element 110), because the ever-increasing electrostatic repulsion between protons overcomes the limited-range <a href="/wiki/Strong_nuclear_force" class="mw-redirect" title="Strong nuclear force">strong nuclear force</a> that holds nuclei together. The next closed nucleon shells (magic numbers) are thought to denote the centre of the long-sought island of stability, where half-lives to alpha decay and spontaneous fission lengthen again.<a href="#cite_note-Fricke1971-106">[93]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Next_proton_shell.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Next_proton_shell.svg/350px-Next_proton_shell.svg.png" decoding="async" width="350" height="458" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Next_proton_shell.svg/525px-Next_proton_shell.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/70/Next_proton_shell.svg/700px-Next_proton_shell.svg.png 2x" data-file-width="596" data-file-height="780" /></a><figcaption>Orbitals with high <a href="/wiki/Azimuthal_quantum_number" title="Azimuthal quantum number">azimuthal quantum number</a> are raised in energy, eliminating what would otherwise be a gap in orbital energy corresponding to a closed proton shell at element 114. This raises the next proton shell to the region around <a href="/wiki/Unbinilium" title="Unbinilium">element 120</a>.<a href="#cite_note-Kratz-76">[65]</a></figcaption></figure> Initially, by analogy with neutron magic number 126, the next proton shell was also expected at <a href="/wiki/Unbihexium" title="Unbihexium">element 126</a>, too far beyond the synthesis capabilities of the mid-20th century to get much theoretical attention. In 1966, new values for the potential and <a href="/wiki/Spin%E2%80%93orbit_interaction" title="Spin–orbit interaction">spin–orbit interaction</a> in this region of the periodic table<a href="#cite_note-107">[94]</a> contradicted this and predicted that the next proton shell would instead be at element 114,<a href="#cite_note-Fricke1971-106">[93]</a> and that nuclei in this region would be relatively stable against spontaneous fission.<a href="#cite_note-Fricke1971-106">[93]</a> The expected closed neutron shells in this region were at neutron number 184 or 196, making 298Fl and 310Fl candidates for being doubly magic.<a href="#cite_note-Fricke1971-106">[93]</a> 1972 estimates predicted a half-life of around 1 year for 298Fl, which was expected to be near an <a href="/wiki/Island_of_stability" title="Island of stability">island of stability</a> centered near 294Ds (with a half-life around 1010 years, comparable to 232<a href="/wiki/Thorium" title="Thorium">Th</a>).<a href="#cite_note-Fricke1971-106">[93]</a> After making the first isotopes of elements 112–118 at the turn of the 21st century, it was found that these neutron-deficient isotopes were stabilized against fission. In 2008 it was thus hypothesized that the stabilization against fission of these nuclides was due to their <a href="/wiki/Spheroid" title="Spheroid">oblate</a> nuclei, and that a region of oblate nuclei was centred on 288Fl. Also, new theoretical models showed that the expected energy gap between the proton orbitals 2f7/2 (filled at element 114) and 2f5/2 (filled at <a href="/wiki/Unbinilium" title="Unbinilium">element 120</a>) was smaller than expected, so element 114 no longer appeared to be a stable spherical closed nuclear shell. The next doubly magic nucleus is now expected to be around 306Ubb, but this nuclide's expected short half-life and low production <a href="/wiki/Cross_section_(physics)" title="Cross section (physics)">cross section</a> make its synthesis challenging.<a href="#cite_note-Kratz-76">[65]</a> Still, the island of stability is expected to exist in this region, and nearer its centre (which has not been approached closely enough yet) some nuclides, such as 291<a href="/wiki/Moscovium" title="Moscovium">Mc</a> and its alpha- and beta-decay <a href="/wiki/Decay_product" title="Decay product">daughters</a>,<a href="#cite_note-108">[n]</a> may be found to decay by <a href="/wiki/Positron_emission" title="Positron emission">positron emission</a> or <a href="/wiki/Electron_capture" title="Electron capture">electron capture</a> and thus move into the centre of the island.<a href="#cite_note-Zagrebaev-96">[83]</a> Due to the expected high fission barriers, any nucleus in this island of stability would decay exclusively by alpha decay and perhaps some electron capture and <a href="/wiki/Beta_decay" title="Beta decay">beta decay</a>,<a href="#cite_note-Fricke1971-106">[93]</a> both of which would bring the nuclei closer to the beta-stability line where the island is expected to be. Electron capture is needed to reach the island, which is problematic because it is not certain that electron capture is a major decay mode in this region of the <a href="/wiki/Chart_of_nuclides" class="mw-redirect" title="Chart of nuclides">chart of nuclides</a>.<a href="#cite_note-Zagrebaev-96">[83]</a> Experiments were done in 2000–2004 at Flerov Laboratory of Nuclear Reactions in Dubna studying the fission properties of the compound nucleus 292Fl by bombarding 244Pu with accelerated 48Ca ions.<a href="#cite_note-jinr20006-109">[95]</a> A compound nucleus is a loose combination of <a href="/wiki/Nucleon" title="Nucleon">nucleons</a> that have not yet arranged themselves into nuclear shells. It has no internal structure and is held together only by the collision forces between the two nuclei.<a href="#cite_note-compoundnucleus-110">[96]</a><a href="#cite_note-111">[o]</a> Results showed how such nuclei fission mainly by expelling doubly magic or nearly doubly magic fragments such as 40<a href="/wiki/Calcium" title="Calcium">Ca</a>, 132<a href="/wiki/Tin" title="Tin">Sn</a>, 208<a href="/wiki/Lead" title="Lead">Pb</a>, or 209<a href="/wiki/Bismuth" title="Bismuth">Bi</a>. It was also found that 48Ca and 58<a href="/wiki/Iron" title="Iron">Fe</a> projectiles had a similar yield for the fusion-fission pathway, suggesting possible future use of 58Fe projectiles in making superheavy elements.<a href="#cite_note-jinr20006-109">[95]</a> It has also been suggested that a neutron-rich flerovium isotope can be formed by quasifission (partial fusion followed by fission) of a massive nucleus.<a href="#cite_note-ZG-112">[97]</a> Recently it has been shown that multi-nucleon transfer reactions in collisions of actinide nuclei (such as <a href="/wiki/Uranium" title="Uranium">uranium</a> and <a href="/wiki/Curium" title="Curium">curium</a>) might be used to make neutron-rich superheavy nuclei in the island of stability,<a href="#cite_note-ZG-112">[97]</a> though production of neutron-rich <a href="/wiki/Nobelium" title="Nobelium">nobelium</a> or <a href="/wiki/Seaborgium" title="Seaborgium">seaborgium</a> is more likely.<a href="#cite_note-Zagrebaev-96">[83]</a> Theoretical estimates of alpha decay half-lives of flerovium isotopes, support the experimental data.<a href="#cite_note-half-lifes-113">[98]</a><a href="#cite_note-114">[99]</a> The fission-survived isotope 298Fl, long expected to be doubly magic, is predicted to have alpha decay half-life ~17 days.<a href="#cite_note-prc08-115">[100]</a><a href="#cite_note-116">[101]</a> Making 298Fl directly by a fusion–evaporation pathway is currently impossible: no known combination of target and stable projectile can give 184 neutrons for the compound nucleus, and radioactive projectiles such as 50Ca (half-life 14 s) cannot yet be used in the needed quantity and intensity.<a href="#cite_note-ZG-112">[97]</a> One possibility for making the theorized long-lived nuclei of copernicium (291Cn and 293Cn) and flerovium near the middle of the island, is using even heavier targets such as 250<a href="/wiki/Curium" title="Curium">Cm</a>, 249<a href="/wiki/Berkelium" title="Berkelium">Bk</a>, 251<a href="/wiki/Californium" title="Californium">Cf</a>, and 254<a href="/wiki/Einsteinium" title="Einsteinium">Es</a>, that when fused with 48Ca would yield isotopes such as 291Mc and 291Fl (as decay products of 299Uue, 295Ts, and 295Lv), which may have just enough neutrons to alpha decay to nuclides close enough to the centre of the island to possibly undergo electron capture and move inward to the centre. However, reaction cross sections would be small and little is yet known about the decay properties of superheavies near the beta-stability line. This may be the current best hope to synthesize nuclei in the island of stability, but it is speculative and may or may not work in practice.<a href="#cite_note-Zagrebaev-96">[83]</a> Another possibility is to use controlled <a href="/wiki/Nuclear_explosion" title="Nuclear explosion">nuclear explosions</a> to get the high <a href="/wiki/Neutron_flux" title="Neutron flux">neutron flux</a> needed to make macroscopic amounts of such isotopes.<a href="#cite_note-Zagrebaev-96">[83]</a> This would mimic the <a href="/wiki/R-process" title="R-process">r-process</a> where the actinides were first produced in nature and the gap of instability after <a href="/wiki/Polonium" title="Polonium">polonium</a> bypassed, as it would bypass the gaps of instability at 258–260<a href="/wiki/Fermium" title="Fermium">Fm</a> and at <a href="/wiki/Mass_number" title="Mass number">mass number</a> 275 (atomic numbers <a href="/wiki/Rutherfordium" title="Rutherfordium">104</a> to 108).<a href="#cite_note-Zagrebaev-96">[83]</a> Some such isotopes (especially 291Cn and 293Cn) may even have been synthesized in nature, but would decay far too quickly (with half-lives of only thousands of years) and be produced in far too small quantities (~10−12 the abundance of lead) to be detectable today outside <a href="/wiki/Cosmic_ray" title="Cosmic ray">cosmic rays</a>.<a href="#cite_note-Zagrebaev-96">[83]</a> <div class="mw-heading mw-heading3"><h3 id="Atomic_and_physical">Atomic and physical</h3>[<a href="/w/index.php?title=Flerovium&action=edit&section=10" title="Edit section: Atomic and physical">edit</a>]</div> Flerovium is in group 14 in the <a href="/wiki/Periodic_table" title="Periodic table">periodic table</a>, below <a href="/wiki/Carbon" title="Carbon">carbon</a>, <a href="/wiki/Silicon" title="Silicon">silicon</a>, <a href="/wiki/Germanium" title="Germanium">germanium</a>, <a href="/wiki/Tin" title="Tin">tin</a>, and <a href="/wiki/Lead" title="Lead">lead</a>. Every previous group 14 element has 4 electrons in its valence shell, hence <a href="/wiki/Valence_electron" title="Valence electron">valence electron</a> configuration ns2np2. For flerovium, the trend will continue and the valence electron configuration is predicted as 7s27p2;<a href="#cite_note-Haire-3">[3]</a> flerovium will be similar to its lighter <a href="/wiki/Congener_(chemistry)" title="Congener (chemistry)">congeners</a> in many ways. Differences are likely to arise; a large contributor is <a href="/wiki/Spin%E2%80%93orbit_interaction" title="Spin–orbit interaction">spin–orbit (SO) interaction</a>—mutual interaction between the electrons' motion and <a href="/wiki/Spin_(physics)" title="Spin (physics)">spin</a>. It is especially strong in superheavy elements, because the electrons move faster than in lighter atoms, at speeds comparable to the <a href="/wiki/Speed_of_light" title="Speed of light">speed of light</a>.<a href="#cite_note-FOOTNOTEThayer201063–64-117">[102]</a> For flerovium, it lowers the 7s and the 7p electron energy levels (stabilizing the corresponding electrons), but two of the 7p electron energy levels are stabilized more than the other four.<a href="#cite_note-Faegri-118">[103]</a> The stabilization of the 7s electrons is called the <a href="/wiki/Inert_pair_effect" class="mw-redirect" title="Inert pair effect">inert pair effect</a>, and the effect "tearing" the 7p subshell into the more and less stabilized parts is called subshell splitting. Computational chemists see the split as a change of the second (<a href="/wiki/Azimuthal_quantum_number" title="Azimuthal quantum number">azimuthal</a>) <a href="/wiki/Quantum_number" title="Quantum number">quantum number</a> ℓ from 1 to <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style>1⁄2 and <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">3⁄2 for the more stabilized and less stabilized parts of the 7p subshell, respectively.<a href="#cite_note-FOOTNOTEThayer201063–67-119">[104]</a><a href="#cite_note-120">[p]</a> For many theoretical purposes, the valence electron configuration may be represented to reflect the 7p subshell split as 7s2 7p2 1/2.<a href="#cite_note-Haire-3">[3]</a> These effects cause flerovium's chemistry to be somewhat different from that of its lighter neighbours. Because the spin–orbit splitting of the 7p subshell is very large in flerovium, and both of flerovium's filled orbitals in the 7th shell are stabilized relativistically; the valence electron configuration of flerovium may be considered to have a completely filled shell. Its first <a href="/wiki/Ionization_energy" title="Ionization energy">ionization energy</a> of 8.539 <a href="/wiki/Electronvolt" title="Electronvolt">eV</a> (823.9 <a href="/wiki/Joule_per_mole" title="Joule per mole">kJ/mol</a>) should be the second-highest in group 14.<a href="#cite_note-Haire-3">[3]</a> The 6d electron levels are also destabilized, leading to some early speculations that they may be chemically active, though newer work suggests this is unlikely.<a href="#cite_note-Fricke1971-106">[93]</a> Because the first ionization energy is higher than in <a href="/wiki/Silicon" title="Silicon">silicon</a> and <a href="/wiki/Germanium" title="Germanium">germanium</a>, though still lower than in <a href="/wiki/Carbon" title="Carbon">carbon</a>, it has been suggested that flerovium could be classed as a <a href="/wiki/Metalloid" title="Metalloid">metalloid</a>.<a href="#cite_note-metalloid-121">[105]</a> Flerovium's closed-shell electron configuration means <a href="/wiki/Metallic_bonding" title="Metallic bonding">metallic bonding</a> in metallic flerovium is weaker than in the elements before and after; so flerovium is expected to have a low <a href="/wiki/Boiling_point" title="Boiling point">boiling point</a>,<a href="#cite_note-Haire-3">[3]</a> and has recently been suggested to be possibly a gaseous metal, similar to predictions for copernicium, which also has a closed-shell electron configuration.<a href="#cite_note-Kratz-76">[65]</a> Flerovium's <a href="/wiki/Melting_point" title="Melting point">melting</a> and boiling points were predicted in the 1970s to be around 70 and 150 °C,<a href="#cite_note-Haire-3">[3]</a> significantly lower than for the lighter group 14 elements (lead has 327 and 1749 °C), and continuing the trend of decreasing boiling points down the group. Earlier studies predicted a boiling point of ~1000 °C or 2840 °C,<a href="#cite_note-Fricke1971-106">[93]</a> but this is now considered unlikely because of the expected weak metallic bonding and that group trends would expect flerovium to have low sublimation enthalpy.<a href="#cite_note-Haire-3">[3]</a> Preliminary 2021 calculations predicted that flerovium should have melting point −73 °C (lower than mercury at −39 °C and copernicium, predicted 10 ± 11 °C) and boiling point 107 °C, which would make it a liquid metal.<a href="#cite_note-liquid-122">[106]</a> Like <a href="/wiki/Mercury_(element)" title="Mercury (element)">mercury</a>, <a href="/wiki/Radon" title="Radon">radon</a>, and <a href="/wiki/Copernicium" title="Copernicium">copernicium</a>, but not <a href="/wiki/Lead" title="Lead">lead</a> and <a href="/wiki/Oganesson" title="Oganesson">oganesson</a> (eka-radon), flerovium is calculated to have no <a href="/wiki/Electron_affinity" title="Electron affinity">electron affinity</a>.<a href="#cite_note-123">[107]</a> A 2010 study published calculations predicting a <a href="/wiki/Hexagonal_close-packed" class="mw-redirect" title="Hexagonal close-packed">hexagonal close-packed</a> crystal structure for flerovium due to spin–orbit coupling effects, and a density of 9.928 g/cm3, though this was noted to be probably slightly too low.<a href="#cite_note-hcp-124">[108]</a> Newer calculations published in 2017 expected flerovium to crystallize in <a href="/wiki/Face-centred_cubic" class="mw-redirect" title="Face-centred cubic">face-centred cubic</a> crystal structure like its lighter congener lead,<a href="#cite_note-fcc-125">[109]</a> and calculations published in 2022 predicted a density of 11.4 ± 0.3 g/cm3, similar to lead (11.34 g/cm3). These calculations found that the face-centred cubic and hexagonal close-packed structures should have nearly the same energy, a phenomenon reminiscent of the noble gases. These calculations predict that hexagonal close-packed flerovium should be a semiconductor, with a <a href="/wiki/Band_gap" title="Band gap">band gap</a> of 0.8 ± 0.3 eV. (Copernicium is also predicted to be a semiconductor.) These calculations predict that the cohesive energy of flerovium should be around −0.5 ± 0.1 eV; this is similar to that predicted for oganesson (−0.45 eV), larger than that predicted for copernicium (−0.38 eV), but smaller than that of mercury (−0.79 eV). The melting point was calculated as 284 ± 50 K (11 ± 50 °C), so that flerovium is probably a liquid at room temperature, although the boiling point was not determined.<a href="#cite_note-Florez-4">[4]</a> The electron of a <a href="/wiki/Hydrogen-like_atom" title="Hydrogen-like atom">hydrogen-like</a> flerovium ion (Fl113+; remove all but one electron) is expected to move so fast that its mass is 1.79 times that of a stationary electron, due to <a href="/wiki/Relativistic_quantum_chemistry" title="Relativistic quantum chemistry">relativistic effects</a>. (The figures for hydrogen-like lead and tin are expected to be 1.25 and 1.073 respectively.<a href="#cite_note-FOOTNOTEThayer201064-126">[110]</a>) Flerovium would form weaker metal–metal bonds than lead and would be <a href="/wiki/Adsorption" title="Adsorption">adsorbed</a> less on surfaces.<a href="#cite_note-FOOTNOTEThayer201064-126">[110]</a> <div class="mw-heading mw-heading3"><h3 id="Chemical">Chemical</h3>[<a href="/w/index.php?title=Flerovium&action=edit&section=11" title="Edit section: Chemical">edit</a>]</div> Flerovium is the heaviest known member of group 14, below lead, and is projected to be the second member of the 7p series of elements. Nihonium and flerovium are expected to form a very short subperiod corresponding to the filling of the 7p1/2 orbital, coming between the filling of the 6d5/2 and 7p3/2 subshells. Their chemical behaviour is expected to be very distinctive: nihonium's homology to thallium has been called "doubtful" by computational chemists, while flerovium's to lead has been called only "formal".<a href="#cite_note-Zaitsevskii-127">[111]</a> The first five group 14 members show a +4 oxidation state and the latter members have increasingly prominent +2 chemistry due to onset of the inert pair effect. For tin, the +2 and +4 states are similar in stability, and lead(II) is the most stable of all the chemically well-understood +2 oxidation states in group 14.<a href="#cite_note-Haire-3">[3]</a> The 7s orbitals are very highly stabilized in flerovium, so a very large sp3 <a href="/wiki/Orbital_hybridization" class="mw-redirect" title="Orbital hybridization">orbital hybridization</a> is needed to achieve a +4 oxidation state, so flerovium is expected to be even more stable than lead in its strongly predominant +2 oxidation state and its +4 oxidation state should be highly unstable.<a href="#cite_note-Haire-3">[3]</a> For example, the dioxide (FlO2) is expected to be highly unstable to decomposition into its constituent elements (and would not be formed by direct reaction of flerovium with oxygen),<a href="#cite_note-Haire-3">[3]</a><a href="#cite_note-FOOTNOTEPershina2010502-128">[112]</a> and flerovane (FlH4), which should have Fl–H bond lengths of 1.787 <a href="/wiki/Angstrom" title="Angstrom">Å</a><a href="#cite_note-Schwerdtfeger-129">[113]</a> and would be the heaviest homologue of <a href="/wiki/Methane" title="Methane">methane</a> (the lighter compounds include <a href="/wiki/Silane" title="Silane">silane</a>, <a href="/wiki/Germane" title="Germane">germane</a> and <a href="/wiki/Stannane" title="Stannane">stannane</a>), is predicted to be more thermodynamically unstable than <a href="/wiki/Plumbane" title="Plumbane">plumbane</a>, spontaneously decomposing to flerovium(II) hydride (FlH2) and H2.<a href="#cite_note-FOOTNOTEPershina2010503-130">[114]</a> The tetrafluoride FlF4<a href="#cite_note-FOOTNOTEThayer201083-131">[115]</a> would have bonding mostly due to sd hybridizations rather than sp3 hybridizations,<a href="#cite_note-Fricke1971-106">[93]</a> and its decomposition to the difluoride and fluorine gas would be exothermic.<a href="#cite_note-Schwerdtfeger-129">[113]</a> The other tetrahalides (for example, FlCl4 is destabilized by about 400 kJ/mol) decompose similarly.<a href="#cite_note-Schwerdtfeger-129">[113]</a> The corresponding polyfluoride anion FlF2− 6 should be unstable to <a href="/wiki/Hydrolysis" title="Hydrolysis">hydrolysis</a> in aqueous solution, and flerovium(II) polyhalide anions such as FlBr− 3 and FlI− 3 are predicted to form preferentially in solutions.<a href="#cite_note-Haire-3">[3]</a> The sd hybridizations were suggested in early calculations, as flerovium's 7s and 6d electrons share about the same energy, which would allow a volatile <a href="/wiki/Hexafluoride" title="Hexafluoride">hexafluoride</a> to form, but later calculations do not confirm this possibility.<a href="#cite_note-Fricke1971-106">[93]</a> In general, spin–orbit contraction of the 7p1/2 orbital should lead to smaller bond lengths and larger bond angles: this has been theoretically confirmed in FlH2.<a href="#cite_note-Schwerdtfeger-129">[113]</a> Still, even FlH2 should be relativistically destabilized by 2.6 eV to below Fl+H2; the large spin–orbit effects also break down the usual singlet–triplet divide in the group 14 dihydrides. FlF2 and FlCl2 are predicted to be more stable than FlH2.<a href="#cite_note-132">[116]</a> Due to relativistic stabilization of flerovium's 7s27p2 1/2 valence electron configuration, the 0 oxidation state should also be more stable for flerovium than for lead, as the 7p1/2 electrons begin to also have a mild inert pair effect:<a href="#cite_note-Haire-3">[3]</a> this stabilization of the neutral state may bring about some similarities between the behavior of flerovium and the noble gas <a href="/wiki/Radon" title="Radon">radon</a>.<a href="#cite_note-tanm-77">[66]</a> Due to flerovium's expected relative inertness, diatomic compounds FlH and FlF should have lower energies of <a href="/wiki/Dissociation_(chemistry)" title="Dissociation (chemistry)">dissociation</a> than the corresponding <a href="/wiki/Lead" title="Lead">lead</a> compounds PbH and PbF.<a href="#cite_note-Schwerdtfeger-129">[113]</a> Flerovium(IV) should be even more electronegative than lead(IV);<a href="#cite_note-FOOTNOTEThayer201083-131">[115]</a> lead(IV) has electronegativity 2.33 on the Pauling scale, though the lead(II) value is only 1.87. Flerovium could be a <a href="/wiki/Noble_metal" title="Noble metal">noble metal</a>.<a href="#cite_note-Haire-3">[3]</a> Flerovium(II) should be more stable than lead(II), and halides FlX+, FlX2, FlX− 3, and FlX2− 4 (X = <a href="/wiki/Chlorine" title="Chlorine">Cl</a>, <a href="/wiki/Bromine" title="Bromine">Br</a>, <a href="/wiki/Iodine" title="Iodine">I</a>) are expected to form readily. The fluorides would undergo strong hydrolysis in aqueous solution.<a href="#cite_note-Haire-3">[3]</a> All flerovium dihalides are expected to be stable;<a href="#cite_note-Haire-3">[3]</a> the difluoride being water-soluble.<a href="#cite_note-webelements-133">[117]</a> Spin–orbit effects would destabilize the dihydride (FlH2) by almost 2.6 eV (250 kJ/mol).<a href="#cite_note-FOOTNOTEPershina2010502-128">[112]</a> In aqueous solution, the <a href="/wiki/Oxyanion" title="Oxyanion">oxyanion</a> flerovite (FlO2− 2) would also form, analogous to <a href="/wiki/Plumbite" title="Plumbite">plumbite</a>. Flerovium(II) sulfate (FlSO4) and sulfide (FlS) should be very insoluble in water, and flerovium(II) <a href="/wiki/Acetate" title="Acetate">acetate</a> (FlC2H3O2) and nitrate (Fl(NO3)2) should be quite water-soluble.<a href="#cite_note-Fricke1971-106">[93]</a> The <a href="/wiki/Standard_electrode_potential" title="Standard electrode potential">standard electrode potential</a> for <a href="/wiki/Redox" title="Redox">reduction</a> of Fl2+ ion to metallic flerovium is estimated to be around +0.9 V, confirming the increased stability of flerovium in the neutral state.<a href="#cite_note-Haire-3">[3]</a> In general, due to relativistic stabilization of the 7p1/2 spinor, Fl2+ is expected to have properties intermediate between those of <a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a>2+ or <a href="/wiki/Cadmium" title="Cadmium">Cd</a>2+ and its lighter congener Pb2+.<a href="#cite_note-Haire-3">[3]</a> <div class="mw-heading mw-heading2"><h2 id="Experimental_chemistry">Experimental chemistry</h2>[<a href="/w/index.php?title=Flerovium&action=edit&section=12" title="Edit section: Experimental chemistry">edit</a>]</div> Flerovium is currently the last element whose chemistry has been experimentally investigated, though studies so far are not conclusive. Two experiments were done in April–May 2007 in a joint FLNR-<a href="/wiki/Paul_Scherrer_Institute" title="Paul Scherrer Institute">PSI</a> collaboration to study copernicium chemistry. The first experiment used the reaction 242Pu(48Ca,3n)287Fl; and the second, 244Pu(48Ca,4n)288Fl: these reactions give short-lived flerovium isotopes whose copernicium daughters would then be studied.<a href="#cite_note-2007ex-134">[118]</a> Adsorption properties of the resultant atoms on a gold surface were compared to those of radon, as it was then expected that copernicium's full-shell electron configuration would lead to noble-gas like behavior.<a href="#cite_note-2007ex-134">[118]</a> Noble gases interact with metal surfaces very weakly, which is uncharacteristic of metals.<a href="#cite_note-2007ex-134">[118]</a> The first experiment found 3 atoms of 283Cn but seemingly also 1 atom of 287Fl. This was a surprise; transport time for the product atoms is ~2 s, so the flerovium should have decayed to copernicium before adsorption. In the second reaction, 2 atoms of 288Fl and possibly 1 of 289Fl were seen. Two of the three atoms showed adsorption characteristics associated with a volatile, noble-gas-like element, which has been suggested but is not predicted by more recent calculations. These experiments gave independent confirmation for the discovery of copernicium, flerovium, and livermorium via comparison with published decay data. Further experiments in 2008 to confirm this important result detected 1 atom of 289Fl, and supported previous data showing flerovium had a noble-gas-like interaction with gold.<a href="#cite_note-2007ex-134">[118]</a> Empirical support for a noble-gas-like flerovium soon weakened. In 2009 and 2010, the FLNR-PSI collaboration synthesized more flerovium to follow up their 2007 and 2008 studies. In particular, the first three flerovium atoms made in the 2010 study suggested again a noble-gas-like character, but the complete set taken together resulted in a more ambiguous interpretation, unusual for a metal in the carbon group but not fully like a noble gas in character.<a href="#cite_note-2009ex-16">[16]</a> In their paper, the scientists refrained from calling flerovium's chemical properties "close to those of noble gases", as had previously been done in the 2008 study.<a href="#cite_note-2009ex-16">[16]</a> Flerovium's volatility was again measured through interactions with a gold surface, and provided indications that the volatility of flerovium was comparable to that of mercury, <a href="/wiki/Astatine" title="Astatine">astatine</a>, and the simultaneously investigated copernicium, which had been shown in the study to be a very volatile noble metal, conforming to its being the heaviest known group 12 element.<a href="#cite_note-2009ex-16">[16]</a> Still, it was pointed out that this volatile behavior was not expected for a usual group 14 metal.<a href="#cite_note-2009ex-16">[16]</a> In experiments in 2012 at GSI, flerovium's chemistry was found to be more metallic than noble-gas-like. Jens Volker Kratz and Christoph Düllmann specifically named copernicium and flerovium as being in a new category of "volatile metals"; Kratz even speculated that they might be gases at <a href="/wiki/Standard_temperature_and_pressure" title="Standard temperature and pressure">standard temperature and pressure</a>.<a href="#cite_note-Kratz-76">[65]</a><a href="#cite_note-2012ex-135">[119]</a> These "volatile metals", as a category, were expected to fall between normal metals and noble gases in terms of adsorption properties.<a href="#cite_note-Kratz-76">[65]</a> Contrary to the 2009 and 2010 results, it was shown in the 2012 experiments that the interactions of flerovium and copernicium respectively with gold were about equal.<a href="#cite_note-Duellmann2012-136">[120]</a> Further studies showed that flerovium was more reactive than copernicium, in contradiction to previous experiments and predictions.<a href="#cite_note-Kratz-76">[65]</a> In a 2014 paper detailing the experimental results of the chemical characterization of flerovium, the GSI group wrote: "[flerovium] is the least reactive element in the group, but still a metal."<a href="#cite_note-137">[121]</a> Nevertheless, in a 2016 conference about chemistry and physics of heavy and superheavy elements, Alexander Yakushev and Robert Eichler, two scientists who had been active at GSI and FLNR in determining flerovium's chemistry, still urged caution based on the inconsistencies of the various experiments previously listed, noting that the question of whether flerovium was a metal or a noble gas was still open with the known evidence: one study suggested a weak noble-gas-like interaction between flerovium and gold, while the other suggested a stronger metallic interaction.<a href="#cite_note-138">[122]</a> The longer-lived isotope <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410">289Fl has been considered of interest for future radiochemical studies.<a href="#cite_note-Moody-139">[123]</a> Experiments published in 2022 suggest that flerovium is a metal, exhibiting lower reactivity towards gold than mercury, but higher reactivity than radon. The experiments could not identify if the adsorption was due to elemental flerovium (considered more likely), or if it was due to a flerovium compound such as FlO that was more reactive towards gold than elemental flerovium, but both scenarios involve flerovium forming chemical bonds.<a href="#cite_note-140">[124]</a><a href="#cite_note-141">[125]</a> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2>[<a href="/w/index.php?title=Flerovium&action=edit&section=13" title="Edit section: See also">edit</a>]</div> <ul><li><a href="/wiki/Island_of_stability" title="Island of stability">Island of stability</a>: Flerovium–<a href="/wiki/Unbinilium" title="Unbinilium">Unbinilium</a>–<a href="/wiki/Unbihexium" title="Unbihexium">Unbihexium</a></li> <li><a href="/wiki/Isotopes_of_flerovium" title="Isotopes of flerovium">Isotopes of flerovium</a></li> <li><a href="/wiki/Extended_periodic_table" title="Extended periodic table">Extended periodic table</a></li></ul> <style 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portal-bar-bordered" role="navigation" aria-label="Portals"><a href="/wiki/Wikipedia:Contents/Portals" title="Wikipedia:Contents/Portals">Portal</a>:<ul class="portal-bar-content"><li class="portal-bar-item"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Papapishu-Lab-icon-6.svg/19px-Papapishu-Lab-icon-6.svg.png" decoding="async" width="19" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Papapishu-Lab-icon-6.svg/29px-Papapishu-Lab-icon-6.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Papapishu-Lab-icon-6.svg/38px-Papapishu-Lab-icon-6.svg.png 2x" data-file-width="512" data-file-height="512" /> <a href="/wiki/Portal:Chemistry" title="Portal:Chemistry">Chemistry</a></li></ul></div><style data-mw-deduplicate="TemplateStyles:r1236088147">.mw-parser-output .sister-bar{display:flex;justify-content:center;align-items:baseline;font-size:88%;background-color:#fdfdfd;border:1px solid #a2a9b1;clear:both;margin:1em 0 0;padding:0 2em}.mw-parser-output .sister-bar-header{margin:0 1em 0 0.5em;padding:0.2em 0;flex:0 0 auto;min-height:24px;line-height:22px}.mw-parser-output .sister-bar-content{display:flex;flex-flow:row wrap;flex:0 1 auto;align-items:baseline;padding:0.2em 0;column-gap:1em;margin:0;list-style:none}.mw-parser-output .sister-bar-item{display:flex;align-items:baseline;margin:0.15em 0;min-height:24px;text-align:left}.mw-parser-output .sister-bar-logo{width:22px;line-height:22px;margin:0 0.2em;text-align:right}.mw-parser-output .sister-bar-link{margin:0 0.2em;text-align:left}@media screen and (max-width:960px){.mw-parser-output .sister-bar{flex-flow:column wrap;margin:1em auto 0}.mw-parser-output .sister-bar-header{flex:0 1}.mw-parser-output .sister-bar-content{flex:1;border-top:1px solid #a2a9b1;margin:0;list-style:none}.mw-parser-output .sister-bar-item{flex:0 0 20em;min-width:20em}}.mw-parser-output .navbox+link+.sister-bar,.mw-parser-output .navbox+style+.sister-bar,.mw-parser-output .portal-bar+link+.sister-bar,.mw-parser-output .portal-bar+style+.sister-bar,.mw-parser-output .sister-bar+.navbox-styles+.navbox,.mw-parser-output .sister-bar+.navbox-styles+.portal-bar{margin-top:-1px}@media print{body.ns-0 .mw-parser-output .sister-bar{display:none!important}}</style><div class="noprint metadata sister-bar" role="navigation" aria-label="sister-projects"><div class="sister-bar-header">Flerovium at Wikipedia's <a href="/wiki/Wikipedia:Wikimedia_sister_projects" title="Wikipedia:Wikimedia sister projects">sister projects</a>:</div><ul class="sister-bar-content"><li class="sister-bar-item"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/19px-Wiktionary-logo-v2.svg.png" decoding="async" width="19" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/29px-Wiktionary-logo-v2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/38px-Wiktionary-logo-v2.svg.png 2x" data-file-width="391" data-file-height="391" /><a href="https://en.wiktionary.org/wiki/flerovium" class="extiw" title="wikt:flerovium">Definitions</a> from Wiktionary</li><li class="sister-bar-item"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/14px-Commons-logo.svg.png" decoding="async" width="14" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/21px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/28px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /><a href="https://commons.wikimedia.org/wiki/Flerovium" class="extiw" title="c:Flerovium">Media</a> from Commons</li></ul></div> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2>[<a href="/w/index.php?title=Flerovium&action=edit&section=14" title="Edit section: Notes">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-20"><a href="#cite_ref-20">^</a> In <a href="/wiki/Nuclear_physics" title="Nuclear physics">nuclear physics</a>, an element is called <a href="/wiki/Heavy_element" class="mw-redirect" title="Heavy element">heavy</a> if its atomic number is high; <a href="/wiki/Lead" title="Lead">lead</a> (element 82) is one example of such a heavy element. The term "superheavy elements" typically refers to elements with atomic number greater than <a href="/wiki/Lawrencium" title="Lawrencium">103</a> (although there are other definitions, such as atomic number greater than <a href="/wiki/Fermium" title="Fermium">100</a><a href="#cite_note-17">[17]</a> or <a href="/wiki/Copernicium" title="Copernicium">112</a>;<a href="#cite_note-18">[18]</a> sometimes, the term is presented an equivalent to the term "transactinide", which puts an upper limit before the beginning of the hypothetical <a href="/wiki/Superactinide" class="mw-redirect" title="Superactinide">superactinide</a> series).<a href="#cite_note-19">[19]</a> Terms "heavy isotopes" (of a given element) and "heavy nuclei" mean what could be understood in the common language—isotopes of high mass (for the given element) and nuclei of high mass, respectively. </li> <li id="cite_note-23"><a href="#cite_ref-23">^</a> In 2009, a team at the JINR led by Oganessian published results of their attempt to create hassium in a symmetric 136Xe + 136Xe reaction. They failed to observe a single atom in such a reaction, putting the upper limit on the cross section, the measure of probability of a nuclear reaction, as 2.5 <a href="/wiki/Picobarn" class="mw-redirect" title="Picobarn">pb</a>.<a href="#cite_note-21">[20]</a> In comparison, the reaction that resulted in hassium discovery, 208Pb + 58Fe, had a cross section of ~20 pb (more specifically, 19+19 -11 pb), as estimated by the discoverers.<a href="#cite_note-Superheavy_element_84Mu01-22">[21]</a> </li> <li id="cite_note-28"><a href="#cite_ref-28">^</a> The amount of energy applied to the beam particle to accelerate it can also influence the value of cross section. For example, in the 28 14Si + 1 0n → 28 13Al + 1 1p reaction, cross section changes smoothly from 370 mb at 12.3 MeV to 160 mb at 18.3 MeV, with a broad peak at 13.5 MeV with the maximum value of 380 mb.<a href="#cite_note-27">[25]</a> </li> <li id="cite_note-34"><a href="#cite_ref-34">^</a> This figure also marks the generally accepted upper limit for lifetime of a compound nucleus.<a href="#cite_note-Superheavy_element_BerkeleyNoSF-33">[30]</a> </li> <li id="cite_note-38"><a href="#cite_ref-38">^</a> This separation is based on that the resulting nuclei move past the target more slowly then the unreacted beam nuclei. The separator contains electric and magnetic fields whose effects on a moving particle cancel out for a specific velocity of a particle.<a href="#cite_note-FOOTNOTEHoffmanGhiorsoSeaborg2000334-36">[32]</a> Such separation can also be aided by a <a href="/wiki/Time-of-flight_mass_spectrometry" title="Time-of-flight mass spectrometry">time-of-flight measurement</a> and a recoil energy measurement; a combination of the two may allow to estimate the mass of a nucleus.<a href="#cite_note-FOOTNOTEHoffmanGhiorsoSeaborg2000335-37">[33]</a> </li> <li id="cite_note-46"><a href="#cite_ref-46">^</a> Not all decay modes are caused by electrostatic repulsion. For example, <a href="/wiki/Beta_decay" title="Beta decay">beta decay</a> is caused by the <a href="/wiki/Weak_interaction" title="Weak interaction">weak interaction</a>.<a href="#cite_note-FOOTNOTEBeiser2003439-45">[40]</a> </li> <li id="cite_note-56"><a href="#cite_ref-56">^</a> It was already known by the 1960s that ground states of nuclei differed in energy and shape as well as that certain magic numbers of nucleons corresponded to greater stability of a nucleus. However, it was assumed that there was no nuclear structure in superheavy nuclei as they were too deformed to form one.<a href="#cite_note-Superheavy_element_Oganessian12-51">[45]</a> </li> <li id="cite_note-60"><a href="#cite_ref-60">^</a> Since mass of a nucleus is not measured directly but is rather calculated from that of another nucleus, such measurement is called indirect. Direct measurements are also possible, but for the most part they have remained unavailable for superheavy nuclei.<a href="#cite_note-57">[50]</a> The first direct measurement of mass of a superheavy nucleus was reported in 2018 at LBNL.<a href="#cite_note-58">[51]</a> Mass was determined from the location of a nucleus after the transfer (the location helps determine its trajectory, which is linked to the mass-to-charge ratio of the nucleus, since the transfer was done in presence of a magnet).<a href="#cite_note-Superheavy_element_C&EN-59">[52]</a> </li> <li id="cite_note-61"><a href="#cite_ref-61">^</a> If the decay occurred in a vacuum, then since total momentum of an isolated system before and after the decay <a href="/wiki/Momentum#Conservation" title="Momentum">must be preserved</a>, the daughter nucleus would also receive a small velocity. The ratio of the two velocities, and accordingly the ratio of the kinetic energies, would thus be inverse to the ratio of the two masses. The decay energy equals the sum of the known kinetic energy of the alpha particle and that of the daughter nucleus (an exact fraction of the former).<a href="#cite_note-FOOTNOTEBeiser2003433-47">[41]</a> The calculations hold for an experiment as well, but the difference is that the nucleus does not move after the decay because it is tied to the detector. </li> <li id="cite_note-64"><a href="#cite_ref-64">^</a> Spontaneous fission was discovered by Soviet physicist <a href="/wiki/Georgy_Flerov" class="mw-redirect" title="Georgy Flerov">Georgy Flerov</a>,<a href="#cite_note-Superheavy_element_Distillations-62">[53]</a> a leading scientist at JINR, and thus it was a "hobbyhorse" for the facility.<a href="#cite_note-Superheavy_element_coldfusion77-63">[54]</a> In contrast, the LBL scientists believed fission information was not sufficient for a claim of synthesis of an element. They believed spontaneous fission had not been studied enough to use it for identification of a new element, since there was a difficulty of establishing that a compound nucleus had only ejected neutrons and not charged particles like protons or alpha particles.<a href="#cite_note-Superheavy_element_BerkeleyNoSF-33">[30]</a> They thus preferred to link new isotopes to the already known ones by successive alpha decays.<a href="#cite_note-Superheavy_element_Distillations-62">[53]</a> </li> <li id="cite_note-70"><a href="#cite_ref-70">^</a> For instance, element 102 was mistakenly identified in 1957 at the Nobel Institute of Physics in <a href="/wiki/Stockholm" title="Stockholm">Stockholm</a>, <a href="/wiki/Stockholm_County" title="Stockholm County">Stockholm County</a>, <a href="/wiki/Sweden" title="Sweden">Sweden</a>.<a href="#cite_note-Superheavy_element_RSC-65">[55]</a> There were no earlier definitive claims of creation of this element, and the element was assigned a name by its Swedish, American, and British discoverers, nobelium. It was later shown that the identification was incorrect.<a href="#cite_note-FOOTNOTEKragh201838–39-66">[56]</a> The following year, RL was unable to reproduce the Swedish results and announced instead their synthesis of the element; that claim was also disproved later.<a href="#cite_note-FOOTNOTEKragh201838–39-66">[56]</a> JINR insisted that they were the first to create the element and suggested a name of their own for the new element, joliotium;<a href="#cite_note-FOOTNOTEKragh201840-67">[57]</a> the Soviet name was also not accepted (JINR later referred to the naming of the element 102 as "hasty").<a href="#cite_note-Superheavy_element_1993_responses-68">[58]</a> This name was proposed to IUPAC in a written response to their ruling on priority of discovery claims of elements, signed 29 September 1992.<a href="#cite_note-Superheavy_element_1993_responses-68">[58]</a> The name "nobelium" remained unchanged on account of its widespread usage.<a href="#cite_note-Superheavy_element_IUPAC97-69">[59]</a> </li> <li id="cite_note-88"><a href="#cite_ref-88">^</a> Different sources give different values for half-lives; the most recently published values are listed. </li> <li id="cite_note-nc-90">^ <a href="#cite_ref-nc_90-0">a</a> <a href="#cite_ref-nc_90-1">b</a> This isotope is unconfirmed </li> <li id="cite_note-108"><a href="#cite_ref-108">^</a> Specifically, 291Mc, 291Fl, 291Nh, 287Nh, 287Cn, 287Rg, 283Rg, and 283Ds, which are expected to decay to the relatively longer-lived nuclei 283Mt, 287Ds, and 291Cn.<a href="#cite_note-Zagrebaev-96">[83]</a> </li> <li id="cite_note-111"><a href="#cite_ref-111">^</a> It is estimated that it requires around 10−14 s for the nucleons to arrange themselves into nuclear shells, at which point the compound nucleus becomes a <a href="/wiki/Nuclide" title="Nuclide">nuclide</a>, and this number is used by IUPAC as the minimum half-life a claimed isotope must have to be recognized as a nuclide.<a href="#cite_note-compoundnucleus-110">[96]</a> </li> <li id="cite_note-120"><a href="#cite_ref-120">^</a> The quantum number corresponds to the letter in the electron orbital name: 0 to s, 1 to p, 2 to d, etc. See <a href="/wiki/Azimuthal_quantum_number" title="Azimuthal quantum number">azimuthal quantum number</a> for more information. </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2>[<a href="/w/index.php?title=Flerovium&action=edit&section=15" title="Edit section: References">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation audio-visual cs1"><a rel="nofollow" class="external text" href="http://www.periodicvideos.com/videos/feature_flerovium_livermorium.htm">Flerovium and Livermorium</a>. <a href="/wiki/The_Periodic_Table_of_Videos" class="mw-redirect" title="The Periodic Table of Videos">The Periodic Table of Videos</a>. University of Nottingham. 2 December 2011. Retrieved 4 June 2012.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Flerovium+and+Livermorium&rft.pub=University+of+Nottingham&rft.date=2011-12-02&rft_id=http%3A%2F%2Fwww.periodicvideos.com%2Fvideos%2Ffeature_flerovium_livermorium.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20210205191210/https://www.lexico.com/definition/flerovium">"flerovium"</a>. <a href="/wiki/Lexico" title="Lexico">Lexico</a> UK English Dictionary UK English Dictionary UK English Dictionary. <a href="/wiki/Oxford_University_Press" title="Oxford University Press">Oxford University Press</a>. Archived from <a rel="nofollow" class="external text" href="http://www.lexico.com/definition/flerovium">the original</a> on 5 February 2021.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=flerovium&rft.btitle=Lexico+UK+English+Dictionary+UK+English+Dictionary+UK+English+Dictionary&rft.pub=Oxford+University+Press&rft_id=http%3A%2F%2Fwww.lexico.com%2Fdefinition%2Fflerovium&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> </li> <li id="cite_note-Haire-3">^ <a href="#cite_ref-Haire_3-0">a</a> <a href="#cite_ref-Haire_3-1">b</a> <a href="#cite_ref-Haire_3-2">c</a> <a href="#cite_ref-Haire_3-3">d</a> <a href="#cite_ref-Haire_3-4">e</a> <a href="#cite_ref-Haire_3-5">f</a> <a href="#cite_ref-Haire_3-6">g</a> <a href="#cite_ref-Haire_3-7">h</a> <a href="#cite_ref-Haire_3-8">i</a> <a href="#cite_ref-Haire_3-9">j</a> <a href="#cite_ref-Haire_3-10">k</a> <a href="#cite_ref-Haire_3-11">l</a> <a href="#cite_ref-Haire_3-12">m</a> <a href="#cite_ref-Haire_3-13">n</a> <a href="#cite_ref-Haire_3-14">o</a> <a href="#cite_ref-Haire_3-15">p</a> <a href="#cite_ref-Haire_3-16">q</a> <a href="#cite_ref-Haire_3-17">r</a> <a href="#cite_ref-Haire_3-18">s</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHaire2006" class="citation book cs1">Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). 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The Journal of Chemical Physics. 157. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1063%2F5.0097642">10.1063/5.0097642</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+Chemical+Physics&rft.atitle=From+the+gas+phase+to+the+solid+state%3A+The+chemical+bonding+in+the+superheavy+element+flerovium&rft.volume=157&rft.date=2022&rft_id=info%3Adoi%2F10.1063%2F5.0097642&rft.aulast=Florez&rft.aufirst=Edison&rft.au=Smits%2C+Odile+R.&rft.au=Mewes%2C+Jan-Michael&rft.au=Jerabek%2C+Paul&rft.au=Schwerdtfeger%2C+Peter&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> </li> <li id="cite_note-Fricke1975-5">^ <a href="#cite_ref-Fricke1975_5-0">a</a> <a href="#cite_ref-Fricke1975_5-1">b</a> <a href="#cite_ref-Fricke1975_5-2">c</a> <a href="#cite_ref-Fricke1975_5-3">d</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFricke1975" class="citation journal cs1">Fricke, Burkhard (1975). <a rel="nofollow" class="external text" href="https://www.researchgate.net/publication/225672062">"Superheavy elements: a prediction of their chemical and physical properties"</a>. 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Retrieved 4 October 2013.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Recent+Impact+of+Physics+on+Inorganic+Chemistry&rft.atitle=Superheavy+elements%3A+a+prediction+of+their+chemical+and+physical+properties&rft.volume=21&rft.pages=89-144&rft.date=1975&rft_id=info%3Adoi%2F10.1007%2FBFb0116498&rft.isbn=978-3-540-07109-9&rft.aulast=Fricke&rft.aufirst=Burkhard&rft_id=https%3A%2F%2Fwww.researchgate.net%2Fpublication%2F225672062&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> </li> <li id="cite_note-VPershina-6"><a href="#cite_ref-VPershina_6-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPershina2013" class="citation book cs1">Pershina, Valeria (30 November 2013). "Theoretical Chemistry of the Heaviest Elements". In Schädel, Matthias; Shaughnessy, Dawn (eds.). The Chemistry of Superheavy Elements (2nd ed.). 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Archived from <a rel="nofollow" class="external text" href="http://www.iupac.org/news/news-detail/article/element-114-is-named-flerovium-and-element-116-is-named-livermorium.html">the original</a> on 2 June 2012.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Element+114+is+Named+Flerovium+and+Element+116+is+Named+Livermorium&rft.pub=IUPAC&rft.date=2012-05-30&rft_id=http%3A%2F%2Fwww.iupac.org%2Fnews%2Fnews-detail%2Farticle%2Felement-114-is-named-flerovium-and-element-116-is-named-livermorium.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> </li> <li id="cite_note-UtyonkovTexas2015-9"><a href="#cite_ref-UtyonkovTexas2015_9-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFUtyonkov2015" class="citation conference cs1">Utyonkov, V.K.; et al. (2015). <a rel="nofollow" class="external text" href="http://cyclotron.tamu.edu/she2015/assets/pdfs/presentations/Utyonkov_SHE_2015_TAMU.pdf">Synthesis of superheavy nuclei at limits of stability: 239,240Pu + 48Ca and 249–251Cf + 48Ca reactions</a> (PDF). Super Heavy Nuclei International Symposium, Texas A & M University, College Station TX, USA, March 31 – April 02, 2015.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=conference&rft.btitle=Synthesis+of+superheavy+nuclei+at+limits+of+stability%3A+%3Csup%3E239%2C240%3C%2Fsup%3EPu+%2B+%3Csup%3E48%3C%2Fsup%3ECa+and+%3Csup%3E249%E2%80%93251%3C%2Fsup%3ECf+%2B+%3Csup%3E48%3C%2Fsup%3ECa+reactions&rft.date=2015&rft.aulast=Utyonkov&rft.aufirst=V.K.&rft_id=http%3A%2F%2Fcyclotron.tamu.edu%2Fshe2015%2Fassets%2Fpdfs%2Fpresentations%2FUtyonkov_SHE_2015_TAMU.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> </li> <li id="cite_note-284Fl-10">^ <a href="#cite_ref-284Fl_10-0">a</a> <a href="#cite_ref-284Fl_10-1">b</a> <a href="#cite_ref-284Fl_10-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFUtyonkovBrewerOganessianRykaczewski2015" class="citation journal cs1">Utyonkov, V. 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Physical Review C. 92 (3): 034609. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2015PhRvC..92c4609U">2015PhRvC..92c4609U</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1103%2FPhysRevC.92.034609">10.1103/PhysRevC.92.034609</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Physical+Review+C&rft.atitle=Experiments+on+the+synthesis+of+superheavy+nuclei+%3Csup%3E284%3C%2Fsup%3EFl+and+%3Csup%3E285%3C%2Fsup%3EFl+in+the+%3Csup%3E239%2C240%3C%2Fsup%3EPu+%2B+%3Csup%3E48%3C%2Fsup%3ECa+reactions&rft.volume=92&rft.issue=3&rft.pages=034609&rft.date=2015-09-15&rft_id=info%3Adoi%2F10.1103%2FPhysRevC.92.034609&rft_id=info%3Abibcode%2F2015PhRvC..92c4609U&rft.aulast=Utyonkov&rft.aufirst=V.+K.&rft.au=Brewer%2C+N.+T.&rft.au=Oganessian%2C+Yu.+Ts.&rft.au=Rykaczewski%2C+K.+P.&rft.au=Abdullin%2C+F.+Sh.&rft.au=Dmitriev%2C+S.+N.&rft.au=Grzywacz%2C+R.+K.&rft.au=Itkis%2C+M.+G.&rft.au=Miernik%2C+K.&rft.au=Polyakov%2C+A.+N.&rft.au=Roberto%2C+J.+B.&rft.au=Sagaidak%2C+R.+N.&rft.au=Shirokovsky%2C+I.+V.&rft.au=Shumeiko%2C+M.+V.&rft.au=Tsyganov%2C+Yu.+S.&rft.au=Voinov%2C+A.+A.&rft.au=Subbotin%2C+V.+G.&rft.au=Sukhov%2C+A.+M.&rft.au=Sabel%27nikov%2C+A.+V.&rft.au=Vostokin%2C+G.+K.&rft.au=Hamilton%2C+J.+H.&rft.au=Stoyer%2C+M.+A.&rft.au=Strauss%2C+S.+Y.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> </li> <li id="cite_note-PuCa2017-11">^ <a href="#cite_ref-PuCa2017_11-0">a</a> <a href="#cite_ref-PuCa2017_11-1">b</a> <a href="#cite_ref-PuCa2017_11-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFUtyonkovBrewerOganessianRykaczewski2018" class="citation journal cs1">Utyonkov, V. 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Retrieved 2 December 2011.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=LiveScience&rft.atitle=Two+Elements+Named%3A+Livermorium+and+Flerovium&rft.date=2011-12-02&rft.aulast=Welsh&rft.aufirst=J.&rft_id=http%3A%2F%2Fwww.livescience.com%2F17287-element-names-flerovium-livermorium.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> </li> <li id="cite_note-E114&116-103"><a href="#cite_ref-E114&116_103-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.rian.ru/science/20110326/358081075.html">"Российские физики предложат назвать 116 химический элемент московием"</a> [Russian physicists have offered to call 116 chemical element moscovium]. <a href="/wiki/RIA_Novosti" title="RIA Novosti">RIA Novosti</a>. 26 March 2011. Retrieved 8 May 2011.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=%D0%A0%D0%BE%D1%81%D1%81%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B5+%D1%84%D0%B8%D0%B7%D0%B8%D0%BA%D0%B8+%D0%BF%D1%80%D0%B5%D0%B4%D0%BB%D0%BE%D0%B6%D0%B0%D1%82+%D0%BD%D0%B0%D0%B7%D0%B2%D0%B0%D1%82%D1%8C+116+%D1%85%D0%B8%D0%BC%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9+%D1%8D%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D1%82+%D0%BC%D0%BE%D1%81%D0%BA%D0%BE%D0%B2%D0%B8%D0%B5%D0%BC&rft.pub=RIA+Novosti&rft.date=2011-03-26&rft_id=http%3A%2F%2Fwww.rian.ru%2Fscience%2F20110326%2F358081075.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> Mikhail Itkis, the vice-director of JINR, stated: "We would like to name element 114 after <a href="/wiki/Georgy_Flerov" class="mw-redirect" title="Georgy Flerov">Georgy Flerov</a> – flerovium, and the second [element 116] – moscovium, not after Moscow, but after <a href="/wiki/Moscow_Oblast" title="Moscow Oblast">Moscow Oblast</a>". </li> <li id="cite_note-104"><a href="#cite_ref-104">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPopeko2016" class="citation web cs1">Popeko, Andrey G. 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Frontiers in Chemistry. 10 (976635): 976635. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2022FrCh...10.6635Y">2022FrCh...10.6635Y</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.3389%2Ffchem.2022.976635">10.3389/fchem.2022.976635</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9453156">9453156</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/36092655">36092655</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Frontiers+in+Chemistry&rft.atitle=On+the+adsorption+and+reactivity+of+element+114%2C+flerovium&rft.volume=10&rft.issue=976635&rft.pages=976635&rft.date=2022-08-25&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC9453156%23id-name%3DPMC&rft_id=info%3Apmid%2F36092655&rft_id=info%3Adoi%2F10.3389%2Ffchem.2022.976635&rft_id=info%3Abibcode%2F2022FrCh...10.6635Y&rft.aulast=Yakushev&rft.aufirst=A.&rft.au=Lens%2C+L.&rft.au=D%C3%BCllmann%2C+Ch.+E.&rft.au=Khuyagbaatar%2C+J.&rft.au=J%C3%A4ger%2C+E.&rft.au=Krier%2C+J.&rft.au=Runke%2C+J.&rft.au=Albers%2C+H.+M.&rft.au=Asai%2C+M.&rft.au=Block%2C+M.&rft.au=Despotopulos%2C+J.&rft.au=Di+Nitto%2C+A.&rft.au=Eberhardt%2C+K.&rft.au=Forsberg%2C+U.&rft.au=Golubev%2C+P.&rft.au=G%C3%B6tz%2C+M.&rft.au=G%C3%B6tz%2C+S.&rft.au=Haba%2C+H.&rft.au=Harkness-Brennan%2C+L.&rft.au=Herzberg%2C+R.-D.&rft.au=He%C3%9Fberger%2C+F.+P.&rft.au=Hinde%2C+D.&rft.au=H%C3%BCbner%2C+A.&rft.au=Judson%2C+D.&rft.au=Kindler%2C+B.&rft.au=Komori%2C+Y.&rft.au=Konki%2C+J.&rft.au=Kratz%2C+J.+V.&rft.au=Kurz%2C+N.&rft.au=Laatiaoui%2C+M.&rft.au=Lahiri%2C+S.&rft.au=Lommel%2C+B.&rft.au=Maiti%2C+M.&rft.au=Mistry%2C+A.+K.&rft.au=Mokry%2C+Ch.&rft.au=Moody%2C+K.+J.&rft.au=Nagame%2C+Y.&rft.au=Omtvedt%2C+J.+P.&rft.au=Papadakis%2C+P.&rft.au=Pershina%2C+V.&rft.au=Rudolph%2C+D.&rft.au=Samiento%2C+L.+G.&rft.au=Sato%2C+T.+K.&rft.au=Sch%C3%A4del%2C+M.&rft.au=Scharrer%2C+P.&rft.au=Schausten%2C+B.&rft.au=Shaughnessy%2C+D.+A.&rft.au=Steiner%2C+J.&rft.au=Th%C3%B6rle-Pospiech%2C+P.&rft.au=Toyoshima%2C+A.&rft.au=Trautmann%2C+N.&rft.au=Tsukada%2C+K.&rft.au=Uusitalo%2C+J.&rft.au=Voss%2C+K.-O.&rft.au=Ward%2C+A.&rft.au=Wegrzecki%2C+M.&rft.au=Wiehl%2C+N.&rft.au=Williams%2C+E.&rft.au=Yakusheva%2C+V.&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC9453156&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Bibliography">Bibliography</h2>[<a href="/w/index.php?title=Flerovium&action=edit&section=16" title="Edit section: Bibliography">edit</a>]</div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAudi_et_al.2017" class="citation journal cs1">Audi, G.; Kondev, F. 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(2010). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=QbDEC3oL7uAC">Relativisic Methods for Chemists</a>. <a href="/wiki/Springer_(publisher)" class="mw-redirect" title="Springer (publisher)">Springer</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4020-9974-8" title="Special:BookSources/978-1-4020-9974-8"><bdi>978-1-4020-9974-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Relativisic+Methods+for+Chemists&rft.pub=Springer&rft.date=2010&rft.isbn=978-1-4020-9974-8&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DQbDEC3oL7uAC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"></li></ul> <dl><dd><ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFThayer2010" class="citation book cs1">Thayer, J. S. (2010). 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Vol. 10. pp. 63–97. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2F978-1-4020-9975-5_2">10.1007/978-1-4020-9975-5_2</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4020-9974-8" title="Special:BookSources/978-1-4020-9974-8"><bdi>978-1-4020-9974-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Relativistic+Effects+and+the+Chemistry+of+the+Heavier+Main+Group+Elements&rft.btitle=Relativistic+Methods+for+Chemists&rft.series=Challenges+and+Advances+in+Computational+Chemistry+and+Physics&rft.pages=63-97&rft.date=2010&rft_id=info%3Adoi%2F10.1007%2F978-1-4020-9975-5_2&rft.isbn=978-1-4020-9974-8&rft.aulast=Thayer&rft.aufirst=J.+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStysziński2010" class="citation book cs1">Stysziński, J. 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Electronic structure and chemistry of the heaviest elements. p. 450.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Electronic+structure+and+chemistry+of+the+heaviest+elements&rft.pages=450&rft.date=2010&rft.aulast=Pershina&rft.aufirst=V.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AFlerovium" class="Z3988"></li></ul></dd></dl> </div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2>[<a href="/w/index.php?title=Flerovium&action=edit&section=17" title="Edit section: External links">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 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navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Periodic_table_(navbox)" title="Template:Periodic table (navbox)"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Periodic_table_(navbox)" title="Template talk:Periodic table (navbox)"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Periodic_table_(navbox)" title="Special:EditPage/Template:Periodic table (navbox)"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Periodic_table" style="font-size:114%;margin:0 4em"><a href="/wiki/Periodic_table" title="Periodic table">Periodic table</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd wraplinks" style="width:100%;padding:0"><div style="padding:0 0.25em"> <table style="table-layout:fixed; width:100%;" aria-describedby="periodic-table-legend"> <tbody><tr> <td style="line-height:100%;"> </td> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Alkali_metal" title="Alkali metal">1</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Alkaline_earth_metal" title="Alkaline earth metal">2</a> </th> <td colspan="14"> </td> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_3_element" title="Group 3 element">3</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_4_element" title="Group 4 element">4</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_5_element" title="Group 5 element">5</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_6_element" title="Group 6 element">6</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_7_element" title="Group 7 element">7</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_8_element" title="Group 8 element">8</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_9_element" title="Group 9 element">9</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_10_element" title="Group 10 element">10</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_11_element" title="Group 11 element">11</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Group_12_element" title="Group 12 element">12</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Boron_group" title="Boron group">13</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Carbon_group" title="Carbon group">14</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Pnictogen" title="Pnictogen">15</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Chalcogen" title="Chalcogen">16</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Halogen" title="Halogen">17</a> </th> <th scope="col" style="background:transparent; font-weight:normal;"><a href="/wiki/Noble_gas" title="Noble gas">18</a> </th></tr> <tr> <th scope="row" style="background:transparent; font-weight:normal;"><a href="/wiki/Period_1_element" title="Period 1 element">1</a> </th> <td title="H, Hydrogen" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Hydrogen" title="Hydrogen">H</a> </td> <td colspan="30"> </td> <td title="He, Helium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Helium" title="Helium">He</a> </td></tr> <tr> <th scope="row" style="background:transparent; font-weight:normal;"><a href="/wiki/Period_2_element" title="Period 2 element">2</a> </th> <td title="Li, Lithium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Lithium" title="Lithium">Li</a> </td> <td title="Be, Beryllium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Beryllium" title="Beryllium">Be</a> </td> <td colspan="24"> </td> <td title="B, Boron" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Boron" title="Boron">B</a> </td> <td title="C, Carbon" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Carbon" title="Carbon">C</a> </td> <td title="N, Nitrogen" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Nitrogen" title="Nitrogen">N</a> </td> <td title="O, Oxygen" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Oxygen" title="Oxygen">O</a> </td> <td title="F, Fluorine" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Fluorine" title="Fluorine">F</a> </td> <td title="Ne, Neon" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Neon" title="Neon">Ne</a> </td></tr> <tr> <th scope="row" style="background:transparent; font-weight:normal;"><a href="/wiki/Period_3_element" title="Period 3 element">3</a> </th> <td title="Na, Sodium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Sodium" title="Sodium">Na</a> </td> <td title="Mg, Magnesium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Magnesium" title="Magnesium">Mg</a> </td> <td colspan="24"> </td> <td title="Al, Aluminium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Aluminium" title="Aluminium">Al</a> </td> <td title="Si, Silicon" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Silicon" title="Silicon">Si</a> </td> <td title="P, Phosphorus" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Phosphorus" title="Phosphorus">P</a> </td> <td title="S, Sulfur" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Sulfur" title="Sulfur">S</a> </td> <td title="Cl, Chlorine" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Chlorine" title="Chlorine">Cl</a> </td> <td title="Ar, Argon" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Argon" title="Argon">Ar</a> </td></tr> <tr> <th scope="row" style="background:transparent; font-weight:normal;"><a href="/wiki/Period_4_element" title="Period 4 element">4</a> </th> <td title="K, Potassium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Potassium" title="Potassium">K</a> </td> <td title="Ca, Calcium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Calcium" title="Calcium">Ca</a> </td> <td colspan="14"> </td> <td title="Sc, Scandium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Scandium" title="Scandium">Sc</a> </td> <td title="Ti, Titanium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Titanium" title="Titanium">Ti</a> </td> <td title="V, Vanadium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Vanadium" title="Vanadium">V</a> </td> <td title="Cr, Chromium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Chromium" title="Chromium">Cr</a> </td> <td title="Mn, Manganese" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Manganese" title="Manganese">Mn</a> </td> <td title="Fe, Iron" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Iron" title="Iron">Fe</a> </td> <td title="Co, Cobalt" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Cobalt" title="Cobalt">Co</a> </td> <td title="Ni, Nickel" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Nickel" title="Nickel">Ni</a> </td> <td title="Cu, Copper" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Copper" title="Copper">Cu</a> </td> <td title="Zn, Zinc" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Zinc" title="Zinc">Zn</a> </td> <td title="Ga, Gallium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Gallium" title="Gallium">Ga</a> </td> <td title="Ge, Germanium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Germanium" title="Germanium">Ge</a> </td> <td title="As, Arsenic" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Arsenic" title="Arsenic">As</a> </td> <td title="Se, Selenium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Selenium" title="Selenium">Se</a> </td> <td title="Br, Bromine" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Bromine" title="Bromine">Br</a> </td> <td title="Kr, Krypton" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Krypton" title="Krypton">Kr</a> </td></tr> <tr> <th scope="row" style="background:transparent; font-weight:normal;"><a href="/wiki/Period_5_element" title="Period 5 element">5</a> </th> <td title="Rb, Rubidium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Rubidium" title="Rubidium">Rb</a> </td> <td title="Sr, Strontium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Strontium" title="Strontium">Sr</a> </td> <td colspan="14"> </td> <td title="Y, Yttrium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Yttrium" title="Yttrium">Y</a> </td> <td title="Zr, Zirconium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Zirconium" title="Zirconium">Zr</a> </td> <td title="Nb, Niobium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Niobium" title="Niobium">Nb</a> </td> <td title="Mo, Molybdenum" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Molybdenum" title="Molybdenum">Mo</a> </td> <td title="Tc, Technetium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Technetium" title="Technetium">Tc</a> </td> <td title="Ru, Ruthenium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Ruthenium" title="Ruthenium">Ru</a> </td> <td title="Rh, Rhodium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Rhodium" title="Rhodium">Rh</a> </td> <td title="Pd, Palladium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Palladium" title="Palladium">Pd</a> </td> <td title="Ag, Silver" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Silver" title="Silver">Ag</a> </td> <td title="Cd, Cadmium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Cadmium" title="Cadmium">Cd</a> </td> <td title="In, Indium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Indium" title="Indium">In</a> </td> <td title="Sn, Tin" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Tin" title="Tin">Sn</a> </td> <td title="Sb, Antimony" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Antimony" title="Antimony">Sb</a> </td> <td title="Te, Tellurium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Tellurium" title="Tellurium">Te</a> </td> <td title="I, Iodine" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Iodine" title="Iodine">I</a> </td> <td title="Xe, Xenon" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Xenon" title="Xenon">Xe</a> </td></tr> <tr> <th scope="row" style="background:transparent; font-weight:normal;"><a href="/wiki/Period_6_element" title="Period 6 element">6</a> </th> <td title="Cs, Caesium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Caesium" title="Caesium">Cs</a> </td> <td title="Ba, Barium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Barium" title="Barium">Ba</a> </td> <td title="La, Lanthanum" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Lanthanum" title="Lanthanum">La</a> </td> <td title="Ce, Cerium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Cerium" title="Cerium">Ce</a> </td> <td title="Pr, Praseodymium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Praseodymium" title="Praseodymium">Pr</a> </td> <td title="Nd, Neodymium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Neodymium" title="Neodymium">Nd</a> </td> <td title="Pm, Promethium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Promethium" title="Promethium">Pm</a> </td> <td title="Sm, Samarium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Samarium" title="Samarium">Sm</a> </td> <td title="Eu, Europium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Europium" title="Europium">Eu</a> </td> <td title="Gd, Gadolinium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> </td> <td title="Tb, Terbium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Terbium" title="Terbium">Tb</a> </td> <td title="Dy, Dysprosium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Dysprosium" title="Dysprosium">Dy</a> </td> <td title="Ho, Holmium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Holmium" title="Holmium">Ho</a> </td> <td title="Er, Erbium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Erbium" title="Erbium">Er</a> </td> <td title="Tm, Thulium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Thulium" title="Thulium">Tm</a> </td> <td title="Yb, Ytterbium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Ytterbium" title="Ytterbium">Yb</a> </td> <td title="Lu, Lutetium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Lutetium" title="Lutetium">Lu</a> </td> <td title="Hf, Hafnium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Hafnium" title="Hafnium">Hf</a> </td> <td title="Ta, Tantalum" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Tantalum" title="Tantalum">Ta</a> </td> <td title="W, Tungsten" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Tungsten" title="Tungsten">W</a> </td> <td title="Re, Rhenium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Rhenium" title="Rhenium">Re</a> </td> <td title="Os, Osmium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Osmium" title="Osmium">Os</a> </td> <td title="Ir, Iridium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Iridium" title="Iridium">Ir</a> </td> <td title="Pt, Platinum" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Platinum" title="Platinum">Pt</a> </td> <td title="Au, Gold" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Gold" title="Gold">Au</a> </td> <td title="Hg, Mercury" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a> </td> <td title="Tl, Thallium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Thallium" title="Thallium">Tl</a> </td> <td title="Pb, Lead" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Lead" title="Lead">Pb</a> </td> <td title="Bi, Bismuth" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Bismuth" title="Bismuth">Bi</a> </td> <td title="Po, Polonium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Polonium" title="Polonium">Po</a> </td> <td title="At, Astatine" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Astatine" title="Astatine">At</a> </td> <td title="Rn, Radon" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Radon" title="Radon">Rn</a> </td></tr> <tr> <th scope="row" style="background:transparent; font-weight:normal;"><a href="/wiki/Period_7_element" title="Period 7 element">7</a> </th> <td title="Fr, Francium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Francium" title="Francium">Fr</a> </td> <td title="Ra, Radium" style="text-align:center; background-color:#ff9999; border:none; ;"><a href="/wiki/Radium" title="Radium">Ra</a> </td> <td title="Ac, Actinium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Actinium" title="Actinium">Ac</a> </td> <td title="Th, Thorium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Thorium" title="Thorium">Th</a> </td> <td title="Pa, Protactinium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Protactinium" title="Protactinium">Pa</a> </td> <td title="U, Uranium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Uranium" title="Uranium">U</a> </td> <td title="Np, Neptunium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Neptunium" title="Neptunium">Np</a> </td> <td title="Pu, Plutonium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Plutonium" title="Plutonium">Pu</a> </td> <td title="Am, Americium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Americium" title="Americium">Am</a> </td> <td title="Cm, Curium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Curium" title="Curium">Cm</a> </td> <td title="Bk, Berkelium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Berkelium" title="Berkelium">Bk</a> </td> <td title="Cf, Californium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Californium" title="Californium">Cf</a> </td> <td title="Es, Einsteinium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Einsteinium" title="Einsteinium">Es</a> </td> <td title="Fm, Fermium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Fermium" title="Fermium">Fm</a> </td> <td title="Md, Mendelevium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Mendelevium" title="Mendelevium">Md</a> </td> <td title="No, Nobelium" style="text-align:center; background-color:#9bff99; border:none; ;"><a href="/wiki/Nobelium" title="Nobelium">No</a> </td> <td title="Lr, Lawrencium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Lawrencium" title="Lawrencium">Lr</a> </td> <td title="Rf, Rutherfordium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Rutherfordium" title="Rutherfordium">Rf</a> </td> <td title="Db, Dubnium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Dubnium" title="Dubnium">Db</a> </td> <td title="Sg, Seaborgium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Seaborgium" title="Seaborgium">Sg</a> </td> <td title="Bh, Bohrium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Bohrium" title="Bohrium">Bh</a> </td> <td title="Hs, Hassium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Hassium" title="Hassium">Hs</a> </td> <td title="Mt, Meitnerium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Meitnerium" title="Meitnerium">Mt</a> </td> <td title="Ds, Darmstadtium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Darmstadtium" title="Darmstadtium">Ds</a> </td> <td title="Rg, Roentgenium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Roentgenium" title="Roentgenium">Rg</a> </td> <td title="Cn, Copernicium" style="text-align:center; background-color:#99ccff; border:none; ;"><a href="/wiki/Copernicium" title="Copernicium">Cn</a> </td> <td title="Nh, Nihonium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Nihonium" title="Nihonium">Nh</a> </td> <td title="Fl, Flerovium" style="text-align:center; background-color:#fdff8c; border:3px solid black; ;"><a class="mw-selflink selflink">Fl</a> </td> <td title="Mc, Moscovium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Moscovium" title="Moscovium">Mc</a> </td> <td title="Lv, Livermorium" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Livermorium" title="Livermorium">Lv</a> </td> <td title="Ts, Tennessine" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Tennessine" title="Tennessine">Ts</a> </td> <td title="Og, Oganesson" style="text-align:center; background-color:#fdff8c; border:none; ;"><a href="/wiki/Oganesson" title="Oganesson">Og</a> </td></tr></tbody></table> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-even wraplinks" style="width:100%;padding:0"><div style="padding:0 0.25em"><div role="presentation" id="periodic-table-legend" style="border: 1px solid #a2a9b1; width:100%; line-height:120%; text-align:center; vertical-align:top; background:#f8f8f8; margin:0; margin:0;"><div style="padding:0.3em;"> <table style="width:100%; line-height:1.2em; table-layout:fixed; overflow:hidden; text-align:center;"> <tbody><tr> <td style="padding:0 1px; background:#ff9999;"><a href="/wiki/S-block" class="mw-redirect" title="S-block">s-block</a> </td> <td style="padding:0 1px; background:#9bff99;"><a href="/wiki/F-block" class="mw-redirect" title="F-block">f-block</a> </td> <td style="padding:0 1px; background:#99ccff;"><a href="/wiki/D-block" class="mw-redirect" title="D-block">d-block</a> </td> <td style="padding:0 1px; background:#fdff8c;"><a href="/wiki/P-block" class="mw-redirect" title="P-block">p-block</a> </td></tr></tbody></table> </div> </div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox authority-control" aria-label="Navbox" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a>: National <a href="https://www.wikidata.org/wiki/Q1302#identifiers" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><a rel="nofollow" class="external text" href="https://id.loc.gov/authorities/sh2012003542">United States</a></li><li><a rel="nofollow" class="external text" href="http://olduli.nli.org.il/F/?func=find-b&local_base=NLX10&find_code=UID&request=987007593035405171">Israel</a></li></ul></div></td></tr></tbody></table></div>    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