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class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Storia"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Storia</span> </div> </a> <ul id="toc-Storia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Disponibilità" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Disponibilità"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Disponibilità</span> </div> </a> <ul id="toc-Disponibilità-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Composti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Composti"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Composti</span> </div> </a> <ul id="toc-Composti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Isotopi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Isotopi"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Isotopi</span> </div> </a> <ul id="toc-Isotopi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Precauzioni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Precauzioni"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Precauzioni</span> </div> </a> <ul id="toc-Precauzioni-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliografia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bibliografia"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Bibliografia</span> </div> </a> <ul id="toc-Bibliografia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altri_progetti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Altri_progetti"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Altri progetti</span> </div> </a> <ul id="toc-Altri_progetti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Collegamenti_esterni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Collegamenti_esterni"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Collegamenti esterni</span> </div> </a> <ul id="toc-Collegamenti_esterni-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="Indice" 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="Mostra/Nascondi l'indice" > <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" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Mostra/Nascondi l'indice</span> </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"><span class="mw-page-title-main">Protoattinio</span></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="Vai a una voce in un'altra lingua. Disponibile in 133 lingue" > <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-133" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">133 lingue</span> </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/Protaktinium" title="Protaktinium - afrikaans" lang="af" hreflang="af" data-title="Protaktinium" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%8D%95%E1%88%AE%E1%89%B3%E1%8A%AD%E1%89%B2%E1%8A%92%E1%8B%A8%E1%88%9D" title="ፕሮታክቲኒየም - amarico" lang="am" hreflang="am" data-title="ፕሮታክቲኒየም" data-language-autonym="አማርኛ" data-language-local-name="amarico" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Protoactinio" title="Protoactinio - aragonese" lang="an" hreflang="an" data-title="Protoactinio" data-language-autonym="Aragonés" data-language-local-name="aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-anp mw-list-item"><a href="https://anp.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9F%E0%A5%88%E0%A4%95%E0%A5%8D%E0%A4%9F%E0%A5%80%E0%A4%A8%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="प्रोटैक्टीनियम - angika" lang="anp" hreflang="anp" data-title="प्रोटैक्टीनियम" data-language-autonym="अंगिका" data-language-local-name="angika" class="interlanguage-link-target"><span>अंगिका</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A8%D8%B1%D9%88%D8%AA%D9%83%D8%AA%D9%8A%D9%86%D9%8A%D9%88%D9%85" title="بروتكتينيوم - arabo" lang="ar" hreflang="ar" data-title="بروتكتينيوم" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D8%B7%D8%A7%D9%83%D8%AA%D9%8A%D9%86%D9%8A%D9%88%D9%85" title="پروطاكتينيوم - arabo marocchino" lang="ary" hreflang="ary" data-title="پروطاكتينيوم" data-language-autonym="الدارجة" data-language-local-name="arabo marocchino" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%A8%D8%B1%D9%88%D8%AA%D9%83%D8%AA%D9%8A%D9%86%D9%8A%D9%88%D9%85" title="بروتكتينيوم - arabo egiziano" lang="arz" hreflang="arz" data-title="بروتكتينيوم" data-language-autonym="مصرى" data-language-local-name="arabo egiziano" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Protactiniu" title="Protactiniu - asturiano" lang="ast" hreflang="ast" data-title="Protactiniu" data-language-autonym="Asturianu" data-language-local-name="asturiano" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Protaktinium" title="Protaktinium - azerbaigiano" lang="az" hreflang="az" data-title="Protaktinium" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Protaktinium" title="Protaktinium - balinese" lang="ban" hreflang="ban" data-title="Protaktinium" data-language-autonym="Basa Bali" data-language-local-name="balinese" class="interlanguage-link-target"><span>Basa Bali</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9F%D1%80%D0%B0%D1%82%D0%B0%D0%BA%D1%82%D1%8B%D0%BD%D1%96%D0%B9" title="Пратактыній - bielorusso" lang="be" hreflang="be" data-title="Пратактыній" data-language-autonym="Беларуская" data-language-local-name="bielorusso" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%9F%D1%80%D0%B0%D1%82%D0%B0%D0%BA%D1%82%D1%8B%D0%BD" title="Пратактын - Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Пратактын" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - bulgaro" lang="bg" hreflang="bg" data-title="Протактиний" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9F%E0%A5%88%E0%A4%95%E0%A5%8D%E0%A4%9F%E0%A4%BF%E0%A4%A8%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="प्रोटैक्टिनियम - Bhojpuri" lang="bh" hreflang="bh" data-title="प्रोटैक्टिनियम" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AA%E0%A7%8D%E0%A6%B0%E0%A7%8B%E0%A6%9F%E0%A7%87%E0%A6%95%E0%A7%8D%E0%A6%9F%E0%A6%BF%E0%A6%A8%E0%A6%BF%E0%A6%AF%E0%A6%BC%E0%A6%BE%E0%A6%AE" title="প্রোটেক্টিনিয়াম - bengalese" lang="bn" hreflang="bn" data-title="প্রোটেক্টিনিয়াম" data-language-autonym="বাংলা" data-language-local-name="bengalese" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%94%E0%BD%B4%E0%BC%8B%E0%BD%A2%E0%BD%BC%E0%BC%8B%E0%BD%8A%E0%BD%BA%E0%BD%82%E0%BC%8B%E0%BD%8A%E0%BD%B2%E0%BC%8B%E0%BD%93%E0%BD%B2%E0%BD%98%E0%BC%8D" title="པུ་རོ་ཊེག་ཊི་ནིམ། - tibetano" lang="bo" hreflang="bo" data-title="པུ་རོ་ཊེག་ཊི་ནིམ།" data-language-autonym="བོད་ཡིག" data-language-local-name="tibetano" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Protaktiniom" title="Protaktiniom - bretone" lang="br" hreflang="br" data-title="Protaktiniom" data-language-autonym="Brezhoneg" data-language-local-name="bretone" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Protaktinij" title="Protaktinij - bosniaco" lang="bs" hreflang="bs" data-title="Protaktinij" data-language-autonym="Bosanski" data-language-local-name="bosniaco" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Protoactini" title="Protoactini - catalano" lang="ca" hreflang="ca" data-title="Protoactini" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/Protactinium" title="Protactinium - Mindong" lang="cdo" hreflang="cdo" data-title="Protactinium" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Protactinyo" title="Protactinyo - cebuano" lang="ceb" hreflang="ceb" data-title="Protactinyo" data-language-autonym="Cebuano" data-language-local-name="cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%BE%D8%B1%DB%86%D8%AA%DB%95%DA%A9%D8%AA%DB%8C%D9%86%DB%8C%DB%86%D9%85" title="پرۆتەکتینیۆم - curdo centrale" lang="ckb" hreflang="ckb" data-title="پرۆتەکتینیۆم" data-language-autonym="کوردی" data-language-local-name="curdo centrale" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Protoattiniu" title="Protoattiniu - corso" lang="co" hreflang="co" data-title="Protoattiniu" data-language-autonym="Corsu" data-language-local-name="corso" class="interlanguage-link-target"><span>Corsu</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Protaktinium" title="Protaktinium - ceco" lang="cs" hreflang="cs" data-title="Protaktinium" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - ciuvascio" lang="cv" hreflang="cv" data-title="Протактиний" data-language-autonym="Чӑвашла" data-language-local-name="ciuvascio" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Protactiniwm" title="Protactiniwm - gallese" lang="cy" hreflang="cy" data-title="Protactiniwm" data-language-autonym="Cymraeg" data-language-local-name="gallese" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Protactinium" title="Protactinium - danese" lang="da" hreflang="da" data-title="Protactinium" data-language-autonym="Dansk" data-language-local-name="danese" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Protactinium" title="Protactinium - tedesco" lang="de" hreflang="de" data-title="Protactinium" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A0%CF%81%CF%89%CF%84%CE%B1%CE%BA%CF%84%CE%AF%CE%BD%CE%B9%CE%BF" title="Πρωτακτίνιο - greco" lang="el" hreflang="el" data-title="Πρωτακτίνιο" data-language-autonym="Ελληνικά" data-language-local-name="greco" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en badge-Q17437798 badge-goodarticle mw-list-item" title="voce di qualità"><a href="https://en.wikipedia.org/wiki/Protactinium" title="Protactinium - inglese" lang="en" hreflang="en" data-title="Protactinium" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Protaktinio" title="Protaktinio - esperanto" lang="eo" hreflang="eo" data-title="Protaktinio" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Protactinio" title="Protactinio - spagnolo" lang="es" hreflang="es" data-title="Protactinio" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Protaktiinium" title="Protaktiinium - estone" lang="et" hreflang="et" data-title="Protaktiinium" data-language-autonym="Eesti" data-language-local-name="estone" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Protaktinio" title="Protaktinio - basco" lang="eu" hreflang="eu" data-title="Protaktinio" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D8%AA%D8%A7%DA%A9%D8%AA%DB%8C%D9%86%DB%8C%D9%85" title="پروتاکتینیم - persiano" lang="fa" hreflang="fa" data-title="پروتاکتینیم" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi badge-Q17559452 badge-recommendedarticle mw-list-item" title="voce consigliata"><a href="https://fi.wikipedia.org/wiki/Protaktinium" title="Protaktinium - finlandese" lang="fi" hreflang="fi" data-title="Protaktinium" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Protactinium" title="Protactinium - francese" lang="fr" hreflang="fr" data-title="Protactinium" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Protaktiinium" title="Protaktiinium - frisone settentrionale" lang="frr" hreflang="frr" data-title="Protaktiinium" data-language-autonym="Nordfriisk" data-language-local-name="frisone settentrionale" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Protoatini" title="Protoatini - friulano" lang="fur" hreflang="fur" data-title="Protoatini" data-language-autonym="Furlan" data-language-local-name="friulano" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Pr%C3%B3tachtainiam" title="Prótachtainiam - irlandese" lang="ga" hreflang="ga" data-title="Prótachtainiam" data-language-autonym="Gaeilge" data-language-local-name="irlandese" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Protactinium" title="Protactinium - gaelico scozzese" lang="gd" hreflang="gd" data-title="Protactinium" data-language-autonym="Gàidhlig" data-language-local-name="gaelico scozzese" class="interlanguage-link-target"><span>Gàidhlig</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Protactinio" title="Protactinio - galiziano" lang="gl" hreflang="gl" data-title="Protactinio" data-language-autonym="Galego" data-language-local-name="galiziano" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%AA%E0%AB%8D%E0%AA%B0%E0%AB%8B%E0%AA%9F%E0%AB%87%E0%AA%95%E0%AB%8D%E0%AA%9F%E0%AA%BF%E0%AA%A8%E0%AB%80%E0%AA%AF%E0%AA%AE" title="પ્રોટેક્ટિનીયમ - gujarati" lang="gu" hreflang="gu" data-title="પ્રોટેક્ટિનીયમ" data-language-autonym="ગુજરાતી" data-language-local-name="gujarati" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Protaghtinnium" title="Protaghtinnium - mannese" lang="gv" hreflang="gv" data-title="Protaghtinnium" data-language-autonym="Gaelg" data-language-local-name="mannese" class="interlanguage-link-target"><span>Gaelg</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/Protactinium" title="Protactinium - hakka" lang="hak" hreflang="hak" data-title="Protactinium" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="hakka" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A4%D7%A8%D7%95%D7%98%D7%A7%D7%98%D7%99%D7%A0%D7%99%D7%95%D7%9D" title="פרוטקטיניום - ebraico" lang="he" hreflang="he" data-title="פרוטקטיניום" data-language-autonym="עברית" data-language-local-name="ebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9F%E0%A5%88%E0%A4%95%E0%A5%8D%E0%A4%9F%E0%A5%80%E0%A4%A8%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="प्रोटैक्टीनियम - hindi" lang="hi" hreflang="hi" data-title="प्रोटैक्टीनियम" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Protactinium" title="Protactinium - hindi figiano" lang="hif" hreflang="hif" data-title="Protactinium" data-language-autonym="Fiji Hindi" data-language-local-name="hindi figiano" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Protaktinij" title="Protaktinij - croato" lang="hr" hreflang="hr" data-title="Protaktinij" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Protakt%C3%ADnium" title="Protaktínium - ungherese" lang="hu" hreflang="hu" data-title="Protaktínium" data-language-autonym="Magyar" data-language-local-name="ungherese" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8A%D6%80%D5%B8%D5%BF%D5%A1%D5%AF%D5%BF%D5%AB%D5%B6%D5%AB%D5%B8%D6%82%D5%B4" title="Պրոտակտինիում - armeno" lang="hy" hreflang="hy" data-title="Պրոտակտինիում" data-language-autonym="Հայերեն" data-language-local-name="armeno" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Protactinium" title="Protactinium - interlingua" lang="ia" hreflang="ia" data-title="Protactinium" data-language-autonym="Interlingua" data-language-local-name="interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Protaktinium" title="Protaktinium - indonesiano" lang="id" hreflang="id" data-title="Protaktinium" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Protaktinio" title="Protaktinio - ido" lang="io" hreflang="io" data-title="Protaktinio" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%97%E3%83%AD%E3%83%88%E3%82%A2%E3%82%AF%E3%83%81%E3%83%8B%E3%82%A6%E3%83%A0" title="プロトアクチニウム - giapponese" lang="ja" hreflang="ja" data-title="プロトアクチニウム" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/jinmrproktini" title="jinmrproktini - lojban" lang="jbo" hreflang="jbo" data-title="jinmrproktini" data-language-autonym="La .lojban." data-language-local-name="lojban" class="interlanguage-link-target"><span>La .lojban.</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Protaktinium" title="Protaktinium - giavanese" lang="jv" hreflang="jv" data-title="Protaktinium" data-language-autonym="Jawa" data-language-local-name="giavanese" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9E%E1%83%A0%E1%83%9D%E1%83%A2%E1%83%90%E1%83%A5%E1%83%A2%E1%83%98%E1%83%9C%E1%83%98%E1%83%A3%E1%83%9B%E1%83%98" title="პროტაქტინიუმი - georgiano" lang="ka" hreflang="ka" data-title="პროტაქტინიუმი" data-language-autonym="ქართული" data-language-local-name="georgiano" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/Pr%C9%94tak%C9%A9t%C9%A9n%C9%A9y%C9%94m" title="Prɔtakɩtɩnɩyɔm - Kabiye" lang="kbp" hreflang="kbp" data-title="Prɔtakɩtɩnɩyɔm" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - kazako" lang="kk" hreflang="kk" data-title="Протактиний" data-language-autonym="Қазақша" data-language-local-name="kazako" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%AA%E0%B3%8D%E0%B2%B0%E0%B3%8A%E0%B2%9F%E0%B2%BE%E0%B2%95%E0%B3%8D%E0%B2%9F%E0%B2%BF%E0%B2%A8%E0%B2%BF%E0%B2%AF%E0%B2%AE%E0%B3%8D" title="ಪ್ರೊಟಾಕ್ಟಿನಿಯಮ್ - kannada" lang="kn" hreflang="kn" data-title="ಪ್ರೊಟಾಕ್ಟಿನಿಯಮ್" data-language-autonym="ಕನ್ನಡ" data-language-local-name="kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%94%84%EB%A1%9C%ED%8A%B8%EC%95%85%ED%8B%B0%EB%8A%84" title="프로트악티늄 - coreano" lang="ko" hreflang="ko" data-title="프로트악티늄" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-kv mw-list-item"><a href="https://kv.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - komi" lang="kv" hreflang="kv" data-title="Протактиний" data-language-autonym="Коми" data-language-local-name="komi" class="interlanguage-link-target"><span>Коми</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Protaktiniom" title="Protaktiniom - cornico" lang="kw" hreflang="kw" data-title="Protaktiniom" data-language-autonym="Kernowek" data-language-local-name="cornico" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - kirghiso" lang="ky" hreflang="ky" data-title="Протактиний" data-language-autonym="Кыргызча" data-language-local-name="kirghiso" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Protactinium" title="Protactinium - latino" lang="la" hreflang="la" data-title="Protactinium" data-language-autonym="Latina" data-language-local-name="latino" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Protactinium" title="Protactinium - lussemburghese" lang="lb" hreflang="lb" data-title="Protactinium" data-language-autonym="Lëtzebuergesch" data-language-local-name="lussemburghese" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Protactinium" title="Protactinium - limburghese" lang="li" hreflang="li" data-title="Protactinium" data-language-autonym="Limburgs" data-language-local-name="limburghese" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Protoattinio" title="Protoattinio - ligure" lang="lij" hreflang="lij" data-title="Protoattinio" data-language-autonym="Ligure" data-language-local-name="ligure" class="interlanguage-link-target"><span>Ligure</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Protaktinis" title="Protaktinis - lituano" lang="lt" hreflang="lt" data-title="Protaktinis" data-language-autonym="Lietuvių" data-language-local-name="lituano" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Protakt%C4%ABnijs" title="Protaktīnijs - lettone" lang="lv" hreflang="lv" data-title="Protaktīnijs" data-language-autonym="Latviešu" data-language-local-name="lettone" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D1%83%D0%BC" title="Протактиниум - macedone" lang="mk" hreflang="mk" data-title="Протактиниум" data-language-autonym="Македонски" data-language-local-name="macedone" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%AA%E0%B5%8D%E0%B4%B0%E0%B5%8A%E0%B4%9F%E0%B5%8D%E0%B4%9F%E0%B4%95%E0%B5%8D%E0%B4%B1%E0%B5%8D%E0%B4%B1%E0%B4%BF%E0%B4%A8%E0%B4%BF%E0%B4%AF%E0%B4%82" title="പ്രൊട്ടക്റ്റിനിയം - malayalam" lang="ml" hreflang="ml" data-title="പ്രൊട്ടക്റ്റിനിയം" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8" title="Протактини - mongolo" lang="mn" hreflang="mn" data-title="Протактини" data-language-autonym="Монгол" data-language-local-name="mongolo" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9F%E0%A5%85%E0%A4%95%E0%A5%8D%E0%A4%9F%E0%A4%BF%E0%A4%A8%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="प्रोटॅक्टिनियम - marathi" lang="mr" hreflang="mr" data-title="प्रोटॅक्टिनियम" data-language-autonym="मराठी" data-language-local-name="marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-mrj mw-list-item"><a href="https://mrj.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - mari occidentale" lang="mrj" hreflang="mrj" data-title="Протактиний" data-language-autonym="Кырык мары" data-language-local-name="mari occidentale" class="interlanguage-link-target"><span>Кырык мары</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Protaktinium" title="Protaktinium - malese" lang="ms" hreflang="ms" data-title="Protaktinium" data-language-autonym="Bahasa Melayu" data-language-local-name="malese" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%95%E1%80%9B%E1%80%AD%E1%80%AF%E1%80%90%E1%80%80%E1%80%BA%E1%80%90%E1%80%AE%E1%80%94%E1%80%AE%E1%80%9A%E1%80%99%E1%80%BA" title="ပရိုတက်တီနီယမ် - birmano" lang="my" hreflang="my" data-title="ပရိုတက်တီနီယမ်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmano" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Protactinium" title="Protactinium - basso tedesco" lang="nds" hreflang="nds" data-title="Protactinium" data-language-autonym="Plattdüütsch" data-language-local-name="basso tedesco" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9F%E0%A5%8D%E0%A4%AF%E0%A4%BE%E0%A4%95%E0%A5%8D%E0%A4%9F%E0%A4%BF%E0%A4%A8%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="प्रोट्याक्टिनियम - newari" lang="new" hreflang="new" data-title="प्रोट्याक्टिनियम" data-language-autonym="नेपाल भाषा" data-language-local-name="newari" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Protactinium" title="Protactinium - olandese" lang="nl" hreflang="nl" data-title="Protactinium" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Protactinium" title="Protactinium - norvegese nynorsk" lang="nn" hreflang="nn" data-title="Protactinium" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegese nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Protactinium" title="Protactinium - norvegese bokmål" lang="nb" hreflang="nb" data-title="Protactinium" data-language-autonym="Norsk bokmål" data-language-local-name="norvegese bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Protactini" title="Protactini - occitano" lang="oc" hreflang="oc" data-title="Protactini" data-language-autonym="Occitan" data-language-local-name="occitano" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-olo mw-list-item"><a href="https://olo.wikipedia.org/wiki/Protaktinii" title="Protaktinii - Livvi-Karelian" lang="olo" hreflang="olo" data-title="Protaktinii" data-language-autonym="Livvinkarjala" data-language-local-name="Livvi-Karelian" class="interlanguage-link-target"><span>Livvinkarjala</span></a></li><li class="interlanguage-link interwiki-os mw-list-item"><a href="https://os.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - ossetico" lang="os" hreflang="os" data-title="Протактиний" data-language-autonym="Ирон" data-language-local-name="ossetico" class="interlanguage-link-target"><span>Ирон</span></a></li><li class="interlanguage-link interwiki-pi mw-list-item"><a href="https://pi.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9F%E0%A5%8D%E0%A4%AF%E0%A4%BE%E0%A4%95%E0%A5%8D%E0%A4%9F%E0%A4%BF%E0%A4%A8%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="प्रोट्याक्टिनियम - pali" lang="pi" hreflang="pi" data-title="प्रोट्याक्टिनियम" data-language-autonym="पालि" data-language-local-name="pali" class="interlanguage-link-target"><span>पालि</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Protaktyn" title="Protaktyn - polacco" lang="pl" hreflang="pl" data-title="Protaktyn" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Protoactini" title="Protoactini - piemontese" lang="pms" hreflang="pms" data-title="Protoactini" data-language-autonym="Piemontèis" data-language-local-name="piemontese" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D9%B9%DB%8C%DA%A9%D9%B9%DB%8C%D9%86%DB%8C%D9%85" title="پروٹیکٹینیم - Western Punjabi" lang="pnb" hreflang="pnb" data-title="پروٹیکٹینیم" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D9%BC%DB%90%DA%A9%D9%BC%DB%90%D9%86%D9%8A%D9%88%D9%85" title="پروټېکټېنيوم - pashto" lang="ps" hreflang="ps" data-title="پروټېکټېنيوم" data-language-autonym="پښتو" data-language-local-name="pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Protact%C3%ADnio" title="Protactínio - portoghese" lang="pt" hreflang="pt" data-title="Protactínio" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Purutaktinyu" title="Purutaktinyu - quechua" lang="qu" hreflang="qu" data-title="Purutaktinyu" data-language-autonym="Runa Simi" data-language-local-name="quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Protactiniu" title="Protactiniu - rumeno" lang="ro" hreflang="ro" data-title="Protactiniu" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Protactiniu" title="Protactiniu - arumeno" lang="rup" hreflang="rup" data-title="Protactiniu" data-language-autonym="Armãneashti" data-language-local-name="arumeno" class="interlanguage-link-target"><span>Armãneashti</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - russo" lang="ru" hreflang="ru" data-title="Протактиний" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sa mw-list-item"><a href="https://sa.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9F%E0%A5%8D%E0%A4%AF%E0%A4%BE%E0%A4%95%E0%A5%8D%E0%A4%9F%E0%A4%BF%E0%A4%A8%E0%A4%BF%E0%A4%AF%E0%A4%AE" title="प्रोट्याक्टिनियम - sanscrito" lang="sa" hreflang="sa" data-title="प्रोट्याक्टिनियम" data-language-autonym="संस्कृतम्" data-language-local-name="sanscrito" class="interlanguage-link-target"><span>संस्कृतम्</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D1%83%D0%BC" title="Протактиниум - sacha" lang="sah" hreflang="sah" data-title="Протактиниум" data-language-autonym="Саха тыла" data-language-local-name="sacha" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Protoat%C3%ACniu" title="Protoatìniu - sardo" lang="sc" hreflang="sc" data-title="Protoatìniu" data-language-autonym="Sardu" data-language-local-name="sardo" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Protoattiniu" title="Protoattiniu - siciliano" lang="scn" hreflang="scn" data-title="Protoattiniu" data-language-autonym="Sicilianu" data-language-local-name="siciliano" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Protactinium" title="Protactinium - scozzese" lang="sco" hreflang="sco" data-title="Protactinium" data-language-autonym="Scots" data-language-local-name="scozzese" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D9%BD%D9%8A%DA%AA%D9%BD%D9%8A%D9%86%D9%8A%D9%85" title="پروٽيڪٽينيم - sindhi" lang="sd" hreflang="sd" data-title="پروٽيڪٽينيم" data-language-autonym="سنڌي" data-language-local-name="sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Protaktinijum" title="Protaktinijum - serbo-croato" lang="sh" hreflang="sh" data-title="Protaktinijum" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croato" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Protactinium" title="Protactinium - Simple English" lang="en-simple" hreflang="en-simple" data-title="Protactinium" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Protakt%C3%ADnium" title="Protaktínium - slovacco" lang="sk" hreflang="sk" data-title="Protaktínium" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Protaktinij" title="Protaktinij - sloveno" lang="sl" hreflang="sl" data-title="Protaktinij" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Protaktini" title="Protaktini - albanese" lang="sq" hreflang="sq" data-title="Protaktini" data-language-autonym="Shqip" data-language-local-name="albanese" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D1%98%D1%83%D0%BC" title="Протактинијум - serbo" lang="sr" hreflang="sr" data-title="Протактинијум" data-language-autonym="Српски / srpski" data-language-local-name="serbo" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Protaktinium" title="Protaktinium - saterfriesisch" lang="stq" hreflang="stq" data-title="Protaktinium" data-language-autonym="Seeltersk" data-language-local-name="saterfriesisch" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Protaktinium" title="Protaktinium - svedese" lang="sv" hreflang="sv" data-title="Protaktinium" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Protaktini" title="Protaktini - swahili" lang="sw" hreflang="sw" data-title="Protaktini" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%AA%E0%AF%81%E0%AE%B0%E0%AF%8B%E0%AE%9F%E0%AE%BE%E0%AE%95%E0%AF%8D%E0%AE%9F%E0%AE%BF%E0%AE%A9%E0%AE%BF%E0%AE%AF%E0%AE%AE%E0%AF%8D" title="புரோடாக்டினியம் - tamil" lang="ta" hreflang="ta" data-title="புரோடாக்டினியம்" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%AA%E0%B1%8D%E0%B0%B0%E0%B1%8A%E0%B0%9F%E0%B0%BE%E0%B0%95%E0%B1%8D%E0%B0%9F%E0%B1%80%E0%B0%A8%E0%B0%BF%E0%B0%AF%E0%B0%82" title="ప్రొటాక్టీనియం - telugu" lang="te" hreflang="te" data-title="ప్రొటాక్టీనియం" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - tagico" lang="tg" hreflang="tg" data-title="Протактиний" data-language-autonym="Тоҷикӣ" data-language-local-name="tagico" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%82%E0%B8%9E%E0%B8%A3%E0%B9%81%E0%B8%97%E0%B8%81%E0%B8%97%E0%B8%B4%E0%B9%80%E0%B8%99%E0%B8%B5%E0%B8%A2%E0%B8%A1" title="โพรแทกทิเนียม - thailandese" lang="th" hreflang="th" data-title="โพรแทกทิเนียม" data-language-autonym="ไทย" data-language-local-name="thailandese" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Protaktinyo" title="Protaktinyo - tagalog" lang="tl" hreflang="tl" data-title="Protaktinyo" data-language-autonym="Tagalog" data-language-local-name="tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Protaktinyum" title="Protaktinyum - turco" lang="tr" hreflang="tr" data-title="Protaktinyum" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D0%B9" title="Протактиний - tataro" lang="tt" hreflang="tt" data-title="Протактиний" data-language-autonym="Татарча / tatarça" data-language-local-name="tataro" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-ug mw-list-item"><a href="https://ug.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D8%AA%D8%A7%D9%83%D8%AA%D9%89%D9%86%D9%89%D9%8A" title="پروتاكتىنىي - uiguro" lang="ug" hreflang="ug" data-title="پروتاكتىنىي" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="uiguro" class="interlanguage-link-target"><span>ئۇيغۇرچە / Uyghurche</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D1%96%D0%B9" title="Протактиній - ucraino" lang="uk" hreflang="uk" data-title="Протактиній" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D9%B9%DB%8C%DA%A9%D9%B9%DB%8C%D9%86%DB%8C%D9%85" title="پروٹیکٹینیم - urdu" lang="ur" hreflang="ur" data-title="پروٹیکٹینیم" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Protaktiniy" title="Protaktiniy - uzbeco" lang="uz" hreflang="uz" data-title="Protaktiniy" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbeco" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Protaktinii" title="Protaktinii - vepso" lang="vep" hreflang="vep" data-title="Protaktinii" data-language-autonym="Vepsän kel’" data-language-local-name="vepso" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Protactini" title="Protactini - vietnamita" lang="vi" hreflang="vi" data-title="Protactini" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Protactinyo" title="Protactinyo - waray" lang="war" hreflang="war" data-title="Protactinyo" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E9%95%A4" title="镤 - wu" lang="wuu" hreflang="wuu" data-title="镤" data-language-autonym="吴语" data-language-local-name="wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xal mw-list-item"><a href="https://xal.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%82%D0%B0%D0%BA%D1%82%D0%B8%D0%BD%D0%B8%D1%83%D0%BC" title="Протактиниум - kalmyk" lang="xal" hreflang="xal" data-title="Протактиниум" data-language-autonym="Хальмг" data-language-local-name="kalmyk" class="interlanguage-link-target"><span>Хальмг</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/Protaktin%C3%AD%E1%BB%8D%CC%80m" title="Protaktiníọ̀m - yoruba" lang="yo" hreflang="yo" data-title="Protaktiníọ̀m" data-language-autonym="Yorùbá" data-language-local-name="yoruba" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%95%A4" title="镤 - cinese" lang="zh" hreflang="zh" data-title="镤" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E9%8F%B7" title="鏷 - cinese classico" lang="lzh" hreflang="lzh" data-title="鏷" data-language-autonym="文言" data-language-local-name="cinese classico" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Protactinium" title="Protactinium - min nan" lang="nan" hreflang="nan" data-title="Protactinium" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="min nan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%8F%B7" title="鏷 - cantonese" lang="yue" hreflang="yue" data-title="鏷" data-language-autonym="粵語" data-language-local-name="cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/UmPhacagu" title="UmPhacagu - zulu" lang="zu" hreflang="zu" data-title="UmPhacagu" data-language-autonym="IsiZulu" data-language-local-name="zulu" class="interlanguage-link-target"><span>IsiZulu</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1109#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica collegamenti</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespace"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul 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Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1109" title="Collegamento all'elemento connesso dell'archivio dati [g]" accesskey="g"><span>Elemento Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Strumenti pagine"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aspetto"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" 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class="mw-content-ltr mw-parser-output" lang="it" dir="ltr"><table class="infobox sinottico" summary="Tabella sinottica che riassume i principali dati del soggetto" style="width: 300px;"><tbody><tr class="sinottico_testata"><th colspan="2" style="background:#EEEEEE;">Protoattinio</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"> <table border="0" cellpadding="0" cellspacing="1" align="center" style="border-collapse:separate;width:248px;background-color:transparent;"> <tbody><tr> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #a0ffa0;"><a href="/wiki/Idrogeno" title="Idrogeno"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="border:none;width:7px;padding:0;background-color:transparent;"> </td> <td colspan="14" rowspan="5" style="border:none;padding:0;background-color:transparent;">  </td> <td rowspan="3" style="border:none;width:7px;padding:0;background-color:transparent;"> </td> <td colspan="9" rowspan="3" style="border:none;text-align:center;padding:0;background-color:transparent;"> <table align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:transparent;"> <tbody><tr> <td style="font-size:10pt;border:none;padding:0;line-height:1em;background-color:transparent;"><br />91</td> <td style="font-size:16pt;border:none;padding:0;line-height:1em;background-color:transparent;"><b>Pa</b></td></tr></tbody></table> </td> <td colspan="5" style="border:none;padding:0;background-color:transparent;"> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #c0ffff;"><a href="/wiki/Elio" title="Elio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td></tr> <tr> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ff6666;"><a href="/wiki/Litio" title="Litio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffdead;"><a href="/wiki/Berillio" title="Berillio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #cccc99;"><a href="/wiki/Boro" title="Boro"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #a0ffa0;"><a href="/wiki/Carbonio" title="Carbonio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td 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width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Manganese" title="Manganese"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Ferro" title="Ferro"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Cobalto" title="Cobalto"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Nichel" title="Nichel"><span style="float: left; width: 9px; height: 12px; font-size: 9px; 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#ffc0c0;"><a href="/wiki/Rutherfordio" title="Rutherfordio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Dubnio" title="Dubnio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Seaborgio" title="Seaborgio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Bohrio" title="Bohrio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Hassio" title="Hassio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Meitnerio" title="Meitnerio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Darmstadtio" title="Darmstadtio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Roentgenio" title="Roentgenio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffc0c0;"><a href="/wiki/Copernicio" title="Copernicio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #e0e0e0;"><a href="/wiki/Nihonio" title="Nihonio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #e0e0e0;"><a href="/wiki/Flerovio" title="Flerovio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #e0e0e0;"><a href="/wiki/Moscovio" title="Moscovio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #e0e0e0;"><a href="/wiki/Livermorio" title="Livermorio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #fcfecc;"><a href="/wiki/Tennesso" title="Tennesso"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #e8ffff;"><a href="/wiki/Oganesson" title="Oganesson"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td></tr> <tr> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ff9999;"><a href="/wiki/Ununennio" title="Ununennio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td> <td style="padding: 0; width: 9px; height: 12px; border: none; background-color: #ffeedd;"><a href="/wiki/Unbinilio" title="Unbinilio"><span style="float: left; width: 9px; height: 12px; font-size: 9px; line-height: 9px; word-spacing: 3px; cursor: pointer;"> </span></a> </td></tr></tbody></table> <p><a href="/wiki/Torio" title="Torio">torio</a> ← protoattinio → <a href="/wiki/Uranio" title="Uranio">uranio</a> </p> </td></tr><tr><td class="sinottico_testo_centrale" colspan="2"><div class="center"><b><a href="/wiki/Linea_spettrale" title="Linea spettrale">Linea spettrale</a></b><br /><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Protactinium_spectrum_visible.png" class="mw-file-description" title="Linea spettrale dell'elemento"><img alt="Linea spettrale dell'elemento" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Protactinium_spectrum_visible.png/200px-Protactinium_spectrum_visible.png" decoding="async" width="200" height="34" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Protactinium_spectrum_visible.png/300px-Protactinium_spectrum_visible.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Protactinium_spectrum_visible.png/400px-Protactinium_spectrum_visible.png 2x" data-file-width="7430" data-file-height="1280" /></a><figcaption>Linea spettrale dell'elemento</figcaption></figure></div> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background:#EEEEEE;">Generalità</th></tr><tr><th>Nome, simbolo, numero atomico</th><td>protoattinio, Pa, 91 </td></tr><tr><th><a href="/wiki/Serie_chimica" title="Serie chimica">Serie</a></th><td><a href="/wiki/Attinoidi" title="Attinoidi">attinidi</a> </td></tr><tr><th><a href="/wiki/Gruppo_della_tavola_periodica" title="Gruppo della tavola periodica">Gruppo</a>, <a href="/wiki/Periodo_della_tavola_periodica" title="Periodo della tavola periodica">periodo</a>, <a href="/wiki/Blocco_della_tavola_periodica" title="Blocco della tavola periodica">blocco</a></th><td>—, <a href="/wiki/Elementi_del_periodo_7" title="Elementi del periodo 7">7</a>, f </td></tr><tr><th><a href="/wiki/Densit%C3%A0" title="Densità">Densità</a></th><td>15 370 kg/m³ </td></tr><tr><th>Configurazione elettronica</th><td><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Elektronskal_91.svg" class="mw-file-description" title="Configurazione elettronica"><img alt="Configurazione elettronica" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Elektronskal_91.svg/125px-Elektronskal_91.svg.png" decoding="async" width="125" height="125" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Elektronskal_91.svg/188px-Elektronskal_91.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Elektronskal_91.svg/250px-Elektronskal_91.svg.png 2x" data-file-width="500" data-file-height="500" /></a><figcaption>Configurazione elettronica</figcaption></figure> </td></tr><tr><th><a href="/wiki/Termine_spettroscopico" title="Termine spettroscopico">Termine spettroscopico</a></th><td><sup>4</sup>K<sub>11/2</sub> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background:#EEEEEE;">Proprietà atomiche</th></tr><tr><th><a href="/wiki/Peso_atomico" class="mw-redirect" title="Peso atomico">Peso atomico</a></th><td>231,03588 </td></tr><tr><th><a href="/wiki/Raggio_atomico" title="Raggio atomico">Raggio atomico</a> (calc.)</th><td><span class="nowrap"><span data-sort-value="6990163000000000000♠"></span>163 <a href="/wiki/Metro" title="Metro">pm</a></span> </td></tr><tr><th><a href="/wiki/Raggio_covalente" title="Raggio covalente">Raggio covalente</a></th><td>200 pm </td></tr><tr><th><a href="/wiki/Configurazione_elettronica" title="Configurazione elettronica">Configurazione elettronica</a></th><td>[<a href="/wiki/Radon" title="Radon">Rn</a>]7s<sup>2</sup>6d<sup>1</sup>5f<sup>2</sup> </td></tr><tr><th><a href="/wiki/Elettrone" title="Elettrone">e<sup>−</sup></a> per <a href="/wiki/Livello_energetico" title="Livello energetico">livello energetico</a></th><td>2, 8, 18, 32, 20, 9, 2 </td></tr><tr><th><a href="/wiki/Stato_di_ossidazione" title="Stato di ossidazione">Stati di ossidazione</a></th><td>5 (debolmente <a href="/wiki/Base_(chimica)" title="Base (chimica)">basico</a>) </td></tr><tr><th><a href="/wiki/Cristallo" title="Cristallo">Struttura cristallina</a></th><td><a href="/wiki/Sistema_ortorombico" title="Sistema ortorombico">ortorombica</a> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background:#EEEEEE;">Proprietà fisiche</th></tr><tr><th><a href="/wiki/Stato_della_materia" title="Stato della materia">Stato della materia</a></th><td><a href="/wiki/Solido" title="Solido">solido</a> </td></tr><tr><th><a href="/wiki/Punto_di_fusione" title="Punto di fusione">Punto di fusione</a></th><td>1 841 <a href="/wiki/Kelvin" title="Kelvin">K</a> (1 568 <a href="/wiki/Grado_Celsius" title="Grado Celsius">°C</a>) </td></tr><tr><th><a href="/wiki/Punto_di_ebollizione" title="Punto di ebollizione">Punto di ebollizione</a></th><td>4 300 K (4 030 °C) </td></tr><tr><th><a href="/wiki/Volume_molare" title="Volume molare">Volume molare</a></th><td><span class="nowrap"><span data-sort-value="6995151800000000000♠"></span>1,518<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−5</sup></span> m³/mol </td></tr><tr><th><a href="/wiki/Entalpia_di_vaporizzazione" title="Entalpia di vaporizzazione">Entalpia di vaporizzazione</a></th><td><span class="nowrap"><span data-sort-value="7005481000000000000♠"></span>481 <a href="/wiki/Joule_per_mole" title="Joule per mole">kJ/mol</a></span> </td></tr><tr><th><a href="/wiki/Calore_di_fusione" class="mw-redirect" title="Calore di fusione">Calore di fusione</a></th><td>12,34 kJ/mol </td></tr><tr><th><a href="/wiki/Tensione_di_vapore" class="mw-redirect" title="Tensione di vapore">Tensione di vapore</a></th><td><span class="nowrap"><span data-sort-value="6995510000000000000♠"></span>5,1<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−5</sup> <a href="/wiki/Pascal_(unit%C3%A0_di_misura)" title="Pascal (unità di misura)">Pa</a></span> a 2 200 K </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background:#EEEEEE;">Altre proprietà</th></tr><tr><th><a href="/wiki/Numero_CAS" title="Numero CAS">Numero CAS</a></th><td><span class="reflink plainlinksneverexpand"><span class="noarchive"><a class="external text" href="https://iw.toolforge.org/magnustools/cas.php?language=it&cas=7440-13-3">7440-13-3</a></span></span> </td></tr><tr><th><a href="/wiki/Elettronegativit%C3%A0" title="Elettronegatività">Elettronegatività</a></th><td>1,5 (<a href="/wiki/Scala_di_Pauling" class="mw-redirect" title="Scala di Pauling">scala di Pauling</a>) </td></tr><tr><th><a href="/wiki/Calore_specifico" title="Calore specifico">Calore specifico</a></th><td>120 <a href="/wiki/Calore_specifico" title="Calore specifico">J/(kg·K)</a> </td></tr><tr><th><a href="/wiki/Conducibilit%C3%A0_elettrica" class="mw-redirect" title="Conducibilità elettrica">Conducibilità elettrica</a></th><td><span class="nowrap"><span data-sort-value="7006529000000000000♠"></span>5,29<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>6</sup></span>/m·<a href="/wiki/Ohm" title="Ohm">Ω</a> </td></tr><tr><th><a href="/wiki/Conducibilit%C3%A0_termica" title="Conducibilità termica">Conducibilità termica</a></th><td>47 <a href="/wiki/Conducibilit%C3%A0_termica#Unità_di_misura" title="Conducibilità termica">W/(m·K)</a> </td></tr><tr><th><a href="/wiki/Energia_di_ionizzazione" title="Energia di ionizzazione">Energia di prima ionizzazione</a></th><td>568 kJ/mol </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background:#EEEEEE;">Isotopi più stabili</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><table class="wikitable" style="margin: 0;" width="100%"> <tbody><tr><th>iso</th><th>NA</th><th>TD</th><th>DM</th><th>DE</th><th>DP</th></tr> <tr><td><sup>229</sup>Pa</td><td>sintetico</td> <td>1,4 giorni</td><td><a href="/wiki/Decadimento_alfa" title="Decadimento alfa">α</a></td><td>5,58</td><td><a href="/wiki/Attinio" title="Attinio"><sup>225</sup>Ac</a></td></tr><tr><td><sup>230</sup>Pa</td><td>sintetico</td> <td>17,4 giorni</td><td><a href="/wiki/Cattura_elettronica" title="Cattura elettronica">ε</a><br /><a href="/wiki/Decadimento_beta" title="Decadimento beta">β<sup>−</sup></a></td><td>1,310<br />0,563</td><td><a href="/wiki/Torio" title="Torio"><sup>230</sup>Th</a><br /><a href="/wiki/Uranio" title="Uranio"><sup>230</sup>U</a></td></tr><tr><td><sup>231</sup>Pa</td><td>100%</td> <td>32760 anni</td><td><a href="/wiki/Decadimento_alfa" title="Decadimento alfa">α</a></td><td>5,149</td><td><a href="/wiki/Attinio" title="Attinio"><sup>227</sup>Ac</a></td></tr><tr><td><sup>233</sup>Pa</td><td>sintetico</td> <td>26,967 giorni</td><td><a href="/wiki/Decadimento_beta" title="Decadimento beta">β<sup>−</sup></a></td><td>0,571</td><td><a href="/wiki/Uranio" title="Uranio"><sup>233</sup>U</a></td></tr><tr><td><sup>234</sup>Pa</td><td>sintetico</td> <td>6,75 ore</td><td><a href="/wiki/Decadimento_beta" title="Decadimento beta">β<sup>−</sup></a></td><td>0,23</td><td><a href="/wiki/Uranio" title="Uranio"><sup>234</sup>U</a></td></tr> </tbody></table> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background:#EEEEEE;"><small>iso: <a href="/wiki/Isotopo" title="Isotopo">isotopo</a><br />NA: abbondanza in natura<br />TD: <a href="/wiki/Emivita_(fisica)" title="Emivita (fisica)">tempo di dimezzamento</a><br />DM: modalità di decadimento<br />DE: energia di decadimento in MeV<br />DP: prodotto del decadimento</small></th></tr></tbody></table> <p>Il <b>protoattinio</b> è l'<a href="/wiki/Elemento_chimico" title="Elemento chimico">elemento chimico</a> di <a href="/wiki/Numero_atomico" title="Numero atomico">numero atomico</a> 91 e il suo simbolo è <b>Pa</b>. È un <a href="/wiki/Metallo" title="Metallo">metallo</a> denso, di colore grigio-argenteo che reagisce facilmente con l'<a href="/wiki/Ossigeno" title="Ossigeno">ossigeno</a>, con il vapore acqueo e con gli <a href="/wiki/Acido" title="Acido">acidi</a> inorganici. Forma vari <a href="/wiki/Composto_chimico" title="Composto chimico">composti chimici</a> in cui è di solito presente nello stato di <a href="/wiki/Ossidazione" title="Ossidazione">ossidazione</a> +5, ma può anche assumere stati +4, +2 o +3. Le concentrazioni medie di protoattinio nella <a href="/wiki/Crosta_terrestre" title="Crosta terrestre">crosta terrestre</a> sono tipicamente dell'ordine di poche parti per bilione, ma può raggiungere fino a poche parti per milione in alcuni depositi di <a href="/wiki/Uraninite" title="Uraninite">uraninite</a>. A causa della sua scarsità, della alta <a href="/wiki/Radioattivit%C3%A0" title="Radioattività">radioattività</a> e dell'elevata <a href="/wiki/Tossicit%C3%A0" class="mw-redirect" title="Tossicità">tossicità</a>, attualmente non vi sono applicazioni al di fuori della ricerca scientifica, e per questo scopo gran parte del minerale viene estratto da <a href="/wiki/Combustibile_nucleare" title="Combustibile nucleare">combustibile nucleare</a> esaurito. </p><p>Il protoattinio è stato identificato nel 1913 da <a href="/wiki/Kasimir_Fajans" class="mw-redirect" title="Kasimir Fajans">Kasimir Fajans</a> e <a href="/w/index.php?title=Oswald_Helmuth_G%C3%B6hring&action=edit&redlink=1" class="new" title="Oswald Helmuth Göhring (la pagina non esiste)">Oswald Helmuth Göhring</a> che lo chiamarono <i>Brevium</i> per via della sua breve <a href="/wiki/Emivita_(fisica)" title="Emivita (fisica)">emivita</a> dell'<a href="/wiki/Isotopo" title="Isotopo">isotopo</a> specifico studiato, cioè il protoattinio-234. Un isotopo più stabile (<sup>231</sup>Pa) è stato scoperto nel 1917/18 da <a href="/wiki/Otto_Hahn" title="Otto Hahn">Otto Hahn</a> e <a href="/wiki/Lise_Meitner" title="Lise Meitner">Lise Meitner</a>, che scelsero il nome di proto-attinio, tuttavia in seguito lo <a href="/wiki/Unione_internazionale_di_chimica_pura_e_applicata" title="Unione internazionale di chimica pura e applicata">IUPAC</a> decise il nome di protoattinio nel 1949 e confermarono Hahn e Meitner come scopritori. Il nuovo nome significa "madre di <a href="/wiki/Attinio" title="Attinio">attinio</a>" e riflette il fatto che l'attinio è un prodotto del <a href="/wiki/Decadimento_radioattivo" class="mw-redirect" title="Decadimento radioattivo">decadimento radioattivo</a> di protoattinio. </p><p>Il più abbondante (circa il 100%) e il più duraturo tra gli isotopi naturali del protoattinio, il protoattinio-231, ha un <a href="/wiki/Tempo_di_dimezzamento" class="mw-redirect" title="Tempo di dimezzamento">tempo di dimezzamento</a> di 32.760 anni ed è un prodotto del decadimento dell'<a href="/wiki/Uranio-235" title="Uranio-235">uranio-235</a>. Molte tracce più piccole dell'<a href="/wiki/Isomero" class="mw-redirect" title="Isomero">isomero</a> nucleare protoattinio-234m di breve durata si riscontrano nella catena del decadimento dell'uranio-238. Il protoattinio-233 risulta dal decadimento del <a href="/wiki/Torio" title="Torio">torio</a>-233 come parte della catena di eventi per produrre l'uranio-233 per irraggiamento neutronico del torio-232. Si tratta di un prodotto intermedio indesiderato nei reattori nucleari basati sul torio e pertanto rimosso dalla zona attiva del reattore durante il processo di riproduzione. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Caratteristiche">Caratteristiche</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=1" title="Modifica la sezione Caratteristiche" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=1" title="Edit section's source code: Caratteristiche"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il protoattinio è un metallo argenteo che appartiene al gruppo degli <a href="/wiki/Attinoidi" title="Attinoidi">attinidi</a>. Ha un aspetto lucente che resiste per qualche tempo in caso di esposizione all'<a href="/wiki/Aria" title="Aria">aria</a>. Diventa <a href="/wiki/Superconduttivit%C3%A0" title="Superconduttività">superconduttivo</a> a temperature inferiori a <span class="nowrap"><span data-sort-value="7000139999999999999♠"></span>1,4 <a href="/wiki/Kelvin" title="Kelvin">K</a></span>. </p><p>Non riveste alcun ruolo biologico noto. </p> <div class="mw-heading mw-heading2"><h2 id="Applicazioni">Applicazioni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=2" title="Modifica la sezione Applicazioni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=2" title="Edit section's source code: Applicazioni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Per via della sua scarsità, nonché della sua tossicità, il protoattinio non ha applicazioni diverse dalla ricerca scientifica. </p> <div class="mw-heading mw-heading2"><h2 id="Storia">Storia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=3" title="Modifica la sezione Storia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=3" title="Edit section's source code: Storia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il protoattinio fu osservato per la prima volta nel <a href="/wiki/1913" title="1913">1913</a> da <a href="/wiki/Kasimir_Fajans" class="mw-redirect" title="Kasimir Fajans">Kasimir Fajans</a> e <a href="/w/index.php?title=Oswald_Helmuth_G%C3%B6hring&action=edit&redlink=1" class="new" title="Oswald Helmuth Göhring (la pagina non esiste)">Oswald Helmuth Göhring</a> che individuarono l'<a href="/wiki/Isotopo" title="Isotopo">isotopo</a> instabile <sup>234m</sup>Pa (con un'<a href="/wiki/Emivita_(fisica)" title="Emivita (fisica)">emivita</a> di 1,17 minuti) nella catena di decadimenti dell'<a href="/wiki/Uranio" title="Uranio"><sup>238</sup>U</a>. Gli diedero il nome di <i>brevio</i> (dal <a href="/wiki/Lingua_latina" title="Lingua latina">latino</a> <i>brevis</i>, "breve"). </p><p>Il nome cambiò nell'attuale protoattinio nel <a href="/wiki/1918" title="1918">1918</a> quando due gruppi di scienziati – i <a href="/wiki/Germania" title="Germania">tedeschi</a> <a href="/wiki/Otto_Hahn" title="Otto Hahn">Otto Hahn</a> e <a href="/wiki/Lise_Meitner" title="Lise Meitner">Lise Meitner</a> e qualche tempo dopo i <a href="/wiki/Regno_Unito" title="Regno Unito">britannici</a> <a href="/wiki/Frederick_Soddy" title="Frederick Soddy">Frederick Soddy</a> e <a href="/w/index.php?title=John_Cranston&action=edit&redlink=1" class="new" title="John Cranston (la pagina non esiste)">John Cranston</a> – giunsero indipendentemente alla scoperta di <sup>231</sup>Pa. Nel 1949 la <a href="/wiki/Unione_internazionale_di_chimica_pura_e_applicata" title="Unione internazionale di chimica pura e applicata">IUPAC</a> chiamò definitivamente protoattinio e confermò <a href="/wiki/Otto_Hahn" title="Otto Hahn">Otto Hahn</a> e <a href="/wiki/Lise_Meitner" title="Lise Meitner">Lise Meitner</a> come scopritori. </p><p><a href="/w/index.php?title=Aristid_V._Grosse&action=edit&redlink=1" class="new" title="Aristid V. Grosse (la pagina non esiste)">Aristid V. Grosse</a>, un assistente di Hahn, riuscì a preparare due milligrammi di Pa<sub>2</sub>O<sub>5</sub> nel <a href="/wiki/1927" title="1927">1927</a> e, <a href="/wiki/1934" title="1934">sette anni dopo</a> a isolare il protoattinio metallico attraverso conversione dell'ossido in ioduro seguita dalla sua decomposizione termica in alto <a href="/wiki/Vuoto_(fisica)" title="Vuoto (fisica)">vuoto</a> su un filamento elettrico (<a href="/wiki/Processo_van_Arkel-de_Boer" title="Processo van Arkel-de Boer">processo van Arkel-de Boer</a>), secondo la reazione: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {2 PaI5-> 2 Pa + 5 I2}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> <mspace width="thinmathspace" /> <msubsup> <mtext>PaI</mtext> <mrow class="MJX-TeXAtom-ORD"> <mn>5</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mspace width="0pt" height="0pt" depth=".2em" /> </mrow> </msubsup> <mo stretchy="false">⟶</mo> <mn>2</mn> <mspace width="thinmathspace" /> <mtext>Pa</mtext> <mo>+</mo> <mn>5</mn> <mspace width="thinmathspace" /> <msubsup> <mtext>I</mtext> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mspace width="0pt" height="0pt" depth=".2em" /> </mrow> </msubsup> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\ce {2 PaI5-> 2 Pa + 5 I2}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/2bccb8e2f95df4f9a83fffdb390aabd4267cce10" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:21.863ex; height:2.843ex;" alt="{\displaystyle {\ce {2 PaI5-> 2 Pa + 5 I2}}}"></span></dd></dl> <p>Nel <a href="/wiki/1961" title="1961">1961</a> l'ente nazionale britannico per l'<a href="/wiki/Energia_nucleare" title="Energia nucleare">energia nucleare</a> produsse 125 grammi di protoattinio puro al 99,9% lavorando 60 tonnellate di scorie nucleari tramite un processo di purificazione a 12 stadi. Questa ne è rimasta l'unica produzione mondiale per anni. Il protoattinio è stato venduto ai laboratori di ricerca negli anni successivi ad un prezzo di circa <span class="nowrap"><span data-sort-value="7003280000000000000♠"></span>2<span style="margin-left:.25em;">800</span> <a href="/wiki/Dollaro_statunitense" title="Dollaro statunitense">$</a></span> al <a href="/wiki/Grammo" title="Grammo">grammo</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Disponibilità"><span id="Disponibilit.C3.A0"></span>Disponibilità</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=4" title="Modifica la sezione Disponibilità" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=4" title="Edit section's source code: Disponibilità"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il protoattinio è presente in tracce nella <a href="/wiki/Uraninite" title="Uraninite">pechblenda</a> come <sup>231</sup>Pa con un tenore di circa 0,1 <a href="/wiki/Parti_per_milione" title="Parti per milione">ppm</a>. Alcuni minerali trovati nella <a href="/wiki/Repubblica_Democratica_del_Congo" title="Repubblica Democratica del Congo">Repubblica Democratica del Congo</a> ne contengono fino a circa 3 ppm. </p> <div class="mw-heading mw-heading2"><h2 id="Composti">Composti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=5" title="Modifica la sezione Composti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=5" title="Edit section's source code: Composti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Tra i composti noti del protoattinio si annoverano due <a href="/wiki/Fluoro" title="Fluoro">fluoruri</a> (PaF<sub>4</sub> e PaF<sub>5</sub>) due <a href="/wiki/Cloro" title="Cloro">cloruri</a> (PaCl<sub>4</sub> e PaCl<sub>5</sub>) due <a href="/wiki/Bromo" title="Bromo">bromuri</a> (PaBr<sub>4</sub> e PaBr<sub>5</sub>) tre <a href="/wiki/Iodio" title="Iodio">ioduri</a> (PaI<sub>3</sub>, PaI<sub>4</sub> e PaI<sub>5</sub>) e tre <a href="/wiki/Ossigeno" title="Ossigeno">ossidi</a> (PaO, PaO<sub>2</sub> e Pa<sub>2</sub>O<sub>5</sub>). </p> <div class="mw-heading mw-heading2"><h2 id="Isotopi">Isotopi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=6" title="Modifica la sezione Isotopi" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=6" title="Edit section's source code: Isotopi"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Sono noti 29 <a href="/wiki/Radionuclide" title="Radionuclide">isotopi radioattivi</a> del protoattinio, di cui il più stabile è <sup>231</sup>Pa con un'<a href="/wiki/Emivita_(fisica)" title="Emivita (fisica)">emivita</a> di 32 760 anni; seguono <sup>233</sup>Pa (26,967 giorni) e <sup>230</sup>Pa (17,4 giorni). Tutti gli altri isotopi hanno emivite inferiori a 1,58 giorni e la maggior parte di essi inferiore a 1,8 secondi. Sono noti anche due <a href="/wiki/Isomeria_nucleare" title="Isomeria nucleare">metastati</a>, <sup>217m</sup>Pa (emivita di 1,15 millisecondi) e <sup>234m</sup>Pa (1,17 minuti). </p><p>La principale modalità di decadimento degli isotopi più leggeri di <sup>231</sup>Pa è il <a href="/wiki/Decadimento_alfa" title="Decadimento alfa">decadimento alfa</a> in <a href="/wiki/Isotopi_dell%27attinio" class="mw-redirect" title="Isotopi dell'attinio">isotopi dell'attinio</a>; gli isotopi più pesanti decadono preferenzialmente con un <a href="/wiki/Decadimento_beta" title="Decadimento beta">decadimento beta</a> in isotopi di <a href="/wiki/Uranio" title="Uranio">uranio</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Precauzioni">Precauzioni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=7" title="Modifica la sezione Precauzioni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=7" title="Edit section's source code: Precauzioni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il protoattinio è tossico e altamente radioattivo; richiede le stesse precauzioni adottate per la manipolazione del <a href="/wiki/Plutonio" title="Plutonio">plutonio</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Bibliografia">Bibliografia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=8" title="Modifica la sezione Bibliografia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=8" title="Edit section's source code: Bibliografia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite class="citation libro" style="font-style:normal"> Francesco Borgese, <a rel="nofollow" class="external text" href="http://books.google.it/books?id=9uNyAAAACAAJ"><span style="font-style:italic;">Gli elementi della tavola periodica. Rinvenimento, proprietà, usi. Prontuario chimico, fisico, geologico</span></a>, Roma, CISU, 1993, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/88-7975-077-1" title="Speciale:RicercaISBN/88-7975-077-1">88-7975-077-1</a>.</cite></li> <li><cite id="CITEREFTavola_periodica_e_proprietà_degli_elementi" class="citation libro" style="font-style:normal"> R. Barbucci, A. Sabatini e P. Dapporto, <a rel="nofollow" class="external text" href="https://web.archive.org/web/20101022060832/http://www.idelsongnocchi.it/online/vmchk/chimica/tavola-periodica-degli-elementi-iupac.html"><span style="font-style:italic;">Tavola periodica e proprietà degli elementi</span></a>, Firenze, Edizioni V. Morelli, 1998 <small>(archiviato dall'<abbr title="http://www.idelsongnocchi.it/online/vmchk/chimica/tavola-periodica-degli-elementi-iupac.html">url originale</abbr> il 22 ottobre 2010)</small>.</cite></li></ul> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=9" title="Modifica la sezione Altri progetti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=9" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><a href="https://it.wiktionary.org/wiki/protoattinio" class="extiw" title="wikt:protoattinio">Wikizionario</a></li> <li class="" title=""><span class="plainlinks" title="commons:Category:Protactinium"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Protactinium?uselang=it">Wikimedia Commons</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://it.wiktionary.org/wiki/" title="Collabora a Wikizionario"><img alt="Collabora a Wikizionario" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wiktionary_small.svg/18px-Wiktionary_small.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wiktionary_small.svg/27px-Wiktionary_small.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Wiktionary_small.svg/36px-Wiktionary_small.svg.png 2x" data-file-width="350" data-file-height="350" /></a></span> <a href="https://it.wiktionary.org/wiki/" class="extiw" title="wikt:">Wikizionario</a> contiene il lemma di dizionario «<b><a href="https://it.wiktionary.org/wiki/protoattinio" class="extiw" title="wikt:protoattinio">protoattinio</a></b>»</li> <li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file su <b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Protactinium?uselang=it">protoattinio</a></span></b></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Protoattinio&veaction=edit&section=10" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Protoattinio&action=edit&section=10" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li class="mw-empty-elt"></li> <li><cite id="CITEREFTreccani.it" class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://www.treccani.it/enciclopedia/protoattinio"><span style="font-style:italic;">protoattinio</span></a>, su <span style="font-style:italic;">Treccani.it – Enciclopedie on line</span>, <a href="/wiki/Istituto_dell%27Enciclopedia_Italiana" title="Istituto dell'Enciclopedia Italiana">Istituto dell'Enciclopedia Italiana</a>.</cite> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1109#P3365" title="Modifica su Wikidata"><img alt="Modifica su Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/10px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></li> <li><cite id="CITEREFBritannica.com" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Lester Morss, <a rel="nofollow" class="external text" href="https://www.britannica.com/science/protactinium"><span style="font-style:italic;">protactinium</span></a>, su <span style="font-style:italic;"><a href="/wiki/Enciclopedia_Britannica" title="Enciclopedia Britannica">Enciclopedia Britannica</a></span>, Encyclopædia Britannica, Inc.</cite> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1109#P1417" title="Modifica su Wikidata"><img alt="Modifica su Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/10px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://www.webelements.com/webelements/elements/text/Pa/index.html"><span style="font-style:italic;">Protactinium</span></a>, su <span style="font-style:italic;">WebElements.com</span>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://environmentalchemistry.com/yogi/periodic/Pa.html"><span style="font-style:italic;">Protactinium</span></a>, su <span style="font-style:italic;">EnvironmentalChemistry.com</span>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://education.jlab.org/itselemental/ele091.html"><span style="font-style:italic;">It's Elemental – Protactinium</span></a>, su <span style="font-style:italic;">education.jlab.org</span>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://pubs.acs.org/cen/80th/protactinium.html"><span style="font-style:italic;">InfoHaunter</span></a>, su <span style="font-style:italic;">pubs.acs.org</span>.</cite></li></ul> <style data-mw-deduplicate="TemplateStyles:r141815314">.mw-parser-output .navbox{border:1px solid #aaa;clear:both;margin:auto;padding:2px;width:100%}.mw-parser-output .navbox th{padding-left:1em;padding-right:1em;text-align:center}.mw-parser-output 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pagina del template">V</span></a> · <a href="/wiki/Discussioni_template:Elementi_chimici" title="Discussioni template:Elementi chimici"><span title="Discuti del template">D</span></a> · <a class="external text" href="https://it.wikipedia.org/w/index.php?title=Template:Elementi_chimici&action=edit"><span title="Modifica il template. Usa l'anteprima prima di salvare">M</span></a></div></div><span class="navbox_title"><a href="/wiki/Tavola_periodica_degli_elementi" title="Tavola periodica degli elementi">Tavola periodica degli elementi</a></span></th></tr><tr><td colspan="2" class="navbox_list navbox_center navbox_odd"><table style="width:100%"> <tbody><tr> <td align="center"> <table style="font-size:90%; text-align:center"> <tbody><tr> <td style="background-color:#A0DDA0; width:20px"><a href="/wiki/Idrogeno" title="Idrogeno">H</a></td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="width:20px"> </td> <td style="background-color:#C0DDDD; width:20px"><a href="/wiki/Elio" title="Elio">He</a></td> </tr> <tr> <td style="background-color:#FF6666"><a href="/wiki/Litio" title="Litio">Li</a></td> <td style="background-color:#FFDEAD"><a href="/wiki/Berillio" title="Berillio">Be</a></td> <td colspan="24"> </td> <td style="background-color:#CCCC99"><a href="/wiki/Boro" title="Boro">B</a></td> <td style="background-color:#A0DDA0"><a href="/wiki/Carbonio" title="Carbonio">C</a></td> <td style="background-color:#A0DDA0"><a href="/wiki/Azoto" title="Azoto">N</a></td> <td style="background-color:#A0DDA0"><a href="/wiki/Ossigeno" title="Ossigeno">O</a></td> <td style="background-color:#FFDD00"><a href="/wiki/Fluoro" title="Fluoro">F</a></td> <td style="background-color:#C0DDDD"><a href="/wiki/Neon" title="Neon">Ne</a></td> </tr> <tr> <td style="background-color:#FF6666"><a href="/wiki/Sodio" title="Sodio">Na</a></td> <td style="background-color:#FFDEAD"><a href="/wiki/Magnesio" title="Magnesio">Mg</a></td> <td colspan="24"> </td> <td style="background-color:#CCCCCC"><a href="/wiki/Alluminio" title="Alluminio">Al</a></td> <td style="background-color:#CCCC99"><a href="/wiki/Silicio" title="Silicio">Si</a></td> <td style="background-color:#A0DDA0"><a href="/wiki/Fosforo" title="Fosforo">P</a></td> <td style="background-color:#A0DDA0"><a href="/wiki/Zolfo" title="Zolfo">S</a></td> <td style="background-color:#FFDD00"><a href="/wiki/Cloro" title="Cloro">Cl</a></td> <td style="background-color:#C0DDDD"><a href="/wiki/Argon" title="Argon">Ar</a></td> </tr> <tr> <td style="background-color:#FF6666"><a href="/wiki/Potassio" title="Potassio">K</a></td> <td style="background-color:#FFDEAD"><a href="/wiki/Calcio_(elemento_chimico)" title="Calcio (elemento chimico)">Ca</a></td> <td colspan="14"> </td> <td style="background-color:#FFC0C0"><a href="/wiki/Scandio" title="Scandio">Sc</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Titanio" title="Titanio">Ti</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Vanadio" title="Vanadio">V</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Cromo" title="Cromo">Cr</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Manganese" title="Manganese">Mn</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Ferro" title="Ferro">Fe</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Cobalto" title="Cobalto">Co</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Nichel" title="Nichel">Ni</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Rame" title="Rame">Cu</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Zinco" title="Zinco">Zn</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Gallio_(elemento_chimico)" title="Gallio (elemento chimico)">Ga</a></td> <td style="background-color:#CCCC99"><a href="/wiki/Germanio" title="Germanio">Ge</a></td> <td style="background-color:#CCCC99"><a href="/wiki/Arsenico" title="Arsenico">As</a></td> <td style="background-color:#A0DDA0"><a href="/wiki/Selenio" title="Selenio">Se</a></td> <td style="background-color:#FFDD00"><a href="/wiki/Bromo" title="Bromo">Br</a></td> <td style="background-color:#C0DDDD"><a href="/wiki/Kripton" title="Kripton">Kr</a></td> </tr> <tr> <td style="background-color:#FF6666"><a href="/wiki/Rubidio" title="Rubidio">Rb</a></td> <td style="background-color:#FFDEAD"><a href="/wiki/Stronzio" title="Stronzio">Sr</a></td> <td colspan="14"> </td> <td style="background-color:#FFC0C0"><a href="/wiki/Ittrio" title="Ittrio">Y</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Zirconio" title="Zirconio">Zr</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Niobio" title="Niobio">Nb</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Molibdeno" title="Molibdeno">Mo</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Tecnezio" title="Tecnezio">Tc</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Rutenio" title="Rutenio">Ru</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Rodio" title="Rodio">Rh</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Palladio_(elemento_chimico)" title="Palladio (elemento chimico)">Pd</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Argento" title="Argento">Ag</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Cadmio" title="Cadmio">Cd</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Indio" title="Indio">In</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Stagno_(elemento_chimico)" title="Stagno (elemento chimico)">Sn</a></td> <td style="background-color:#CCCC99"><a href="/wiki/Antimonio" title="Antimonio">Sb</a></td> <td style="background-color:#CCCC99"><a href="/wiki/Tellurio" title="Tellurio">Te</a></td> <td style="background-color:#FFDD00"><a href="/wiki/Iodio" title="Iodio">I</a></td> <td style="background-color:#C0DDDD"><a href="/wiki/Xeno" title="Xeno">Xe</a></td> </tr> <tr> <td style="background-color:#FF6666"><a href="/wiki/Cesio" title="Cesio">Cs</a></td> <td style="background-color:#FFDEAD"><a href="/wiki/Bario" title="Bario">Ba</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Lantanio" title="Lantanio">La</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Cerio" title="Cerio">Ce</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Praseodimio" title="Praseodimio">Pr</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Neodimio" title="Neodimio">Nd</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Promezio" title="Promezio">Pm</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Samario" title="Samario">Sm</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Europio" title="Europio">Eu</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Gadolinio" title="Gadolinio">Gd</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Terbio" title="Terbio">Tb</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Disprosio" title="Disprosio">Dy</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Olmio" title="Olmio">Ho</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Erbio" title="Erbio">Er</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Tulio" title="Tulio">Tm</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Itterbio" title="Itterbio">Yb</a></td> <td style="background-color:#FFBFFF"><a href="/wiki/Lutezio" title="Lutezio">Lu</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Afnio" title="Afnio">Hf</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Tantalio" title="Tantalio">Ta</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Tungsteno" title="Tungsteno">W</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Renio" title="Renio">Re</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Osmio" title="Osmio">Os</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Iridio" title="Iridio">Ir</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Platino" title="Platino">Pt</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Oro" title="Oro">Au</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Mercurio_(elemento_chimico)" title="Mercurio (elemento chimico)">Hg</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Tallio" title="Tallio">Tl</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Piombo" title="Piombo">Pb</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Bismuto" title="Bismuto">Bi</a></td> <td style="background-color:#CCCC99"><a href="/wiki/Polonio" title="Polonio">Po</a></td> <td style="background-color:#FFDD00"><a href="/wiki/Astato" title="Astato">At</a></td> <td style="background-color:#C0DDDD"><a href="/wiki/Radon" title="Radon">Rn</a></td> </tr> <tr> <td style="background-color:#FF6666"><a href="/wiki/Francio" title="Francio">Fr</a></td> <td style="background-color:#FFDEAD"><a href="/wiki/Radio_(elemento_chimico)" title="Radio (elemento chimico)">Ra</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Attinio" title="Attinio">Ac</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Torio" title="Torio">Th</a></td> <td style="background-color:#FF99CC"><a class="mw-selflink selflink">Pa</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Uranio" title="Uranio">U</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Nettunio" title="Nettunio">Np</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Plutonio" title="Plutonio">Pu</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Americio" title="Americio">Am</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Curio" title="Curio">Cm</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Berkelio" title="Berkelio">Bk</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Californio" title="Californio">Cf</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Einsteinio" title="Einsteinio">Es</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Fermio" title="Fermio">Fm</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Mendelevio" title="Mendelevio">Md</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Nobelio" title="Nobelio">No</a></td> <td style="background-color:#FF99CC"><a href="/wiki/Laurenzio" title="Laurenzio">Lr</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Rutherfordio" title="Rutherfordio">Rf</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Dubnio" title="Dubnio">Db</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Seaborgio" title="Seaborgio">Sg</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Bohrio" title="Bohrio">Bh</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Hassio" title="Hassio">Hs</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Meitnerio" title="Meitnerio">Mt</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Darmstadtio" title="Darmstadtio">Ds</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Roentgenio" title="Roentgenio">Rg</a></td> <td style="background-color:#FFC0C0"><a href="/wiki/Copernicio" title="Copernicio">Cn</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Nihonio" title="Nihonio">Nh</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Flerovio" title="Flerovio">Fl</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Moscovio" title="Moscovio">Mc</a></td> <td style="background-color:#CCCCCC"><a href="/wiki/Livermorio" title="Livermorio">Lv</a></td> <td style="background-color:#FFDD00"><a href="/wiki/Tennesso" title="Tennesso">Ts</a></td> <td style="background-color:#C0DDDD"><a href="/wiki/Oganesson" title="Oganesson">Og</a></td> </tr> <tr> <td style="background-color:#FF6666"><a href="/wiki/Ununennio" title="Ununennio">Uue</a></td> <td style="background-color:#FFDEAD"><a href="/wiki/Unbinilio" title="Unbinilio">Ubn</a></td> </tr> </tbody></table> </td></tr></tbody></table> <table style="width:100%"> <tbody><tr> <td align="center"> <a href="/wiki/Unbibidi" title="Unbibidi">Unbibidi</a><table style="font-size:90%; text-align:center"> <tbody><tr> <td style="background-color:#FF61CC; width:20px">Ubu</td> <td style="background-color:#FF61CC">Ubb</td> <td style="background-color:#FF61CC">Ubt</td> <td style="background-color:#FF61CC">Ubq</td> <td style="background-color:#FF61CC">Ubp</td> <td style="background-color:#FF61CC">Ubh</td> <td style="background-color:#FF61CC">Ubs</td> <td style="background-color:#FF61CC">Ubo</td> <td style="background-color:#FF61CC">Ube</td> <td style="background-color:#FF61CC">Utn</td> <td style="background-color:#FF61CC">Utu</td> <td style="background-color:#FF61CC">Utb</td> <td style="background-color:#FF61CC">Utt</td> <td style="background-color:#FF61CC">Utq</td> <td style="background-color:#FF61CC">Utp</td> <td style="background-color:#FF61CC">Uth</td> <td style="background-color:#FF61CC">Uts</td> <td style="background-color:#FF61CC">Uto</td> </tr> </tbody></table> </td></tr></tbody></table> <table style="width:100%"> <tbody><tr> <td align="center"> <a href="/wiki/Superattinidi" title="Superattinidi">Superattinidi</a><table style="font-size:90%; text-align:center"> <tbody><tr> <td style="background-color:#FF61CC">Ute</td> <td style="background-color:#FF61CC">Uqn</td> <td style="background-color:#FF61CC">Uqu</td> <td style="background-color:#FF61CC">Uqb</td> <td style="background-color:#FF61CC">Uqt</td> <td style="background-color:#FF61CC">Uqq</td> <td style="background-color:#FF61CC">Uqp</td> <td style="background-color:#FF61CC">Uqh</td> <td style="background-color:#FF61CC">Uqs</td> <td style="background-color:#FF61CC">Uqo</td> <td style="background-color:#FF61CC">Uqe</td> <td style="background-color:#FF61CC">Upn</td> <td style="background-color:#FF61CC">Upu</td> <td style="background-color:#FF61CC">Upb</td> <td style="background-color:#FF61CC">Upt</td> </tr> </tbody></table> </td></tr></tbody></table> <hr /> Suddivisioni della tavola periodica: <a href="/wiki/Gruppo_della_tavola_periodica" title="Gruppo della tavola periodica">Gruppi</a><b> ·</b> <a href="/wiki/Periodo_della_tavola_periodica" title="Periodo della tavola periodica">Periodi</a><b> ·</b> <a href="/wiki/Blocco_della_tavola_periodica" title="Blocco della tavola periodica">Blocchi</a><b> ·</b> <a href="/wiki/Metallo" title="Metallo">Metalli</a><b> ·</b> <a href="/wiki/Metalloide" title="Metalloide">Metalloidi</a> (semimetalli)<b> ·</b> <a href="/wiki/Non_metallo" title="Non metallo">Non metalli</a><b> ·</b> <a href="/wiki/Lantanoidi" title="Lantanoidi">Lantanoidi</a><b> ·</b> <a href="/wiki/Attinoidi" title="Attinoidi">Attinoidi</a><b> ·</b> <a href="/wiki/Superattinidi" title="Superattinidi">Superattinidi</a><b> ·</b> <a href="/wiki/Unbibidi" title="Unbibidi">Unbibidi</a><b> ·</b> <a href="/wiki/Elementi_transuranici" title="Elementi transuranici">Elementi transuranici</a></td></tr></tbody></table> <style data-mw-deduplicate="TemplateStyles:r140554510">.mw-parser-output .CdA{border:1px solid #aaa;width:100%;margin:auto;font-size:90%;padding:2px}.mw-parser-output .CdA th{background-color:#f2f2f2;font-weight:bold;width:20%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .CdA th{background-color:#202122}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .CdA th{background-color:#202122}}</style><table class="CdA"><tbody><tr><th><a href="/wiki/Aiuto:Controllo_di_autorit%C3%A0" title="Aiuto:Controllo di autorità">Controllo di autorità</a></th><td><a href="/wiki/Library_of_Congress_Control_Number" title="Library of Congress Control Number">LCCN</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://id.loc.gov/authorities/subjects/sh85107634">sh85107634</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Gemeinsame_Normdatei" title="Gemeinsame Normdatei">GND</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="tedesco">DE</abbr></span>) <a rel="nofollow" class="external text" href="https://d-nb.info/gnd/4175981-3">4175981-3</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Biblioteca_nazionale_di_Israele" title="Biblioteca nazionale di Israele">J9U</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr>, <abbr title="ebraico">HE</abbr></span>) <a rel="nofollow" class="external text" href="http://olduli.nli.org.il/F/?func=find-b&local_base=NLX10&find_code=UID&request=987007541390005171">987007541390005171</a></span></td></tr></tbody></table> <div class="noprint" style="width:100%; padding: 3px 0; display: flex; flex-wrap: wrap; row-gap: 4px; column-gap: 8px; box-sizing: border-box;"><div style="flex-grow: 1"><style data-mw-deduplicate="TemplateStyles:r140555418">.mw-parser-output .itwiki-template-occhiello{width:100%;line-height:25px;border:1px solid #CCF;background-color:#F0EEFF;box-sizing:border-box}.mw-parser-output .itwiki-template-occhiello-progetto{background-color:#FAFAFA}@media screen{html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}</style><div class="itwiki-template-occhiello"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Gnome-applications-science.svg" class="mw-file-description" title="Chimica"><img alt=" " src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Gnome-applications-science.svg/25px-Gnome-applications-science.svg.png" decoding="async" width="25" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Gnome-applications-science.svg/38px-Gnome-applications-science.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Gnome-applications-science.svg/50px-Gnome-applications-science.svg.png 2x" data-file-width="48" data-file-height="48" /></a></span> <b><a href="/wiki/Portale:Chimica" title="Portale:Chimica">Portale Chimica</a></b>: il portale della scienza della composizione, delle proprietà e delle trasformazioni della materia</div></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Estratto da "<a dir="ltr" href="https://it.wikipedia.org/w/index.php?title=Protoattinio&oldid=138124683">https://it.wikipedia.org/w/index.php?title=Protoattinio&oldid=138124683</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Categoria:Categorie" title="Categoria:Categorie">Categoria</a>: <ul><li><a href="/wiki/Categoria:Elementi_chimici" title="Categoria:Elementi chimici">Elementi chimici</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categorie nascoste: <ul><li><a href="/wiki/Categoria:P3365_letta_da_Wikidata" title="Categoria:P3365 letta da Wikidata">P3365 letta da Wikidata</a></li><li><a href="/wiki/Categoria:P1417_letta_da_Wikidata" title="Categoria:P1417 letta da Wikidata">P1417 letta da Wikidata</a></li><li><a href="/wiki/Categoria:Voci_con_codice_LCCN" title="Categoria:Voci con codice LCCN">Voci con codice LCCN</a></li><li><a href="/wiki/Categoria:Voci_con_codice_GND" title="Categoria:Voci con codice GND">Voci con codice GND</a></li><li><a href="/wiki/Categoria:Voci_con_codice_J9U" title="Categoria:Voci con codice J9U">Voci con codice J9U</a></li><li><a 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