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[o]" accesskey="o"> Masuk log</a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Halaman penyunting yang telah keluar log <a href="/wiki/Bantuan:Pengantar" aria-label="Pelajari lebih lanjut tentang menyunting">pelajari lebih lanjut</a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Istimewa:Kontribusi_saya" title="Daftar suntingan yang dibuat dari alamat IP ini [y]" accesskey="y">Kontribusi</a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Istimewa:Pembicaraan_saya" title="Pembicaraan tentang suntingan dari alamat IP ini [n]" accesskey="n">Pembicaraan</a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Situs"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Daftar isi" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Daftar isi</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">pindah ke bilah sisi</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">sembunyikan</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Awal</div> </a> </li> <li id="toc-Sejarah" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sejarah"> <div class="vector-toc-text"> 1 Sejarah </div> </a> <ul id="toc-Sejarah-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Isotop" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Isotop"> <div class="vector-toc-text"> 2 Isotop </div> </a> <button aria-controls="toc-Isotop-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Gulingkan subbagian Isotop </button> <ul id="toc-Isotop-sublist" class="vector-toc-list"> <li id="toc-Fisi_nuklir" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Fisi_nuklir"> <div class="vector-toc-text"> 2.1 Fisi nuklir </div> </a> <ul id="toc-Fisi_nuklir-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Keterjadian" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Keterjadian"> <div class="vector-toc-text"> 3 Keterjadian </div> </a> <button aria-controls="toc-Keterjadian-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Gulingkan subbagian Keterjadian </button> <ul id="toc-Keterjadian-sublist" class="vector-toc-list"> <li id="toc-Dalam_reaktor_nuklir" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Dalam_reaktor_nuklir"> <div class="vector-toc-text"> 3.1 Dalam reaktor nuklir </div> </a> <ul id="toc-Dalam_reaktor_nuklir-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Persiapan" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Persiapan"> <div class="vector-toc-text"> 4 Persiapan </div> </a> <ul id="toc-Persiapan-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sifat_fisik_dan_kimia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sifat_fisik_dan_kimia"> <div class="vector-toc-text"> 5 Sifat fisik dan kimia </div> </a> <ul id="toc-Sifat_fisik_dan_kimia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Senyawa_kimia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Senyawa_kimia"> <div class="vector-toc-text"> 6 Senyawa kimia </div> </a> <button aria-controls="toc-Senyawa_kimia-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Gulingkan subbagian Senyawa kimia </button> <ul id="toc-Senyawa_kimia-sublist" class="vector-toc-list"> <li id="toc-Oksida_dan_garam_yang_mengandung_oksigen" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Oksida_dan_garam_yang_mengandung_oksigen"> <div class="vector-toc-text"> 6.1 Oksida dan garam yang mengandung oksigen </div> </a> <ul id="toc-Oksida_dan_garam_yang_mengandung_oksigen-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Halida" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Halida"> <div class="vector-toc-text"> 6.2 Halida </div> </a> <ul id="toc-Halida-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Senyawa_anorganik_lainnya" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Senyawa_anorganik_lainnya"> <div class="vector-toc-text"> 6.3 Senyawa anorganik lainnya </div> </a> <ul id="toc-Senyawa_anorganik_lainnya-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Senyawa_organologam" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Senyawa_organologam"> <div class="vector-toc-text"> 6.4 Senyawa organologam </div> </a> <ul id="toc-Senyawa_organologam-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Aplikasi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Aplikasi"> <div class="vector-toc-text"> 7 Aplikasi </div> </a> <ul id="toc-Aplikasi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Pencegahan" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Pencegahan"> <div class="vector-toc-text"> 8 Pencegahan </div> </a> <ul id="toc-Pencegahan-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lihat_pula" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Lihat_pula"> <div class="vector-toc-text"> 9 Lihat pula </div> </a> <ul id="toc-Lihat_pula-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referensi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referensi"> <div class="vector-toc-text"> 10 Referensi </div> </a> <ul id="toc-Referensi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliografi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bibliografi"> <div class="vector-toc-text"> 11 Bibliografi </div> </a> <ul id="toc-Bibliografi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Pranala_luar" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Pranala_luar"> <div class="vector-toc-text"> 12 Pranala luar </div> </a> <ul id="toc-Pranala_luar-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="Daftar isi" 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="Gulingkan daftar isi" > <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" > Gulingkan daftar isi </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">Protaktinium</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="Pergi ke artikel dalam bahasa lain. Terdapat 133 bahasa" > <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" > 133 bahasa </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">Afrikaans</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 – Amharik" lang="am" hreflang="am" data-title="ፕሮታክቲኒየም" data-language-autonym="አማርኛ" data-language-local-name="Amharik" class="interlanguage-link-target">አማርኛ</a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Protoactinio" title="Protoactinio – Aragon" lang="an" hreflang="an" data-title="Protoactinio" data-language-autonym="Aragonés" data-language-local-name="Aragon" class="interlanguage-link-target">Aragonés</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">अंगिका</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 – Arab" lang="ar" hreflang="ar" data-title="بروتكتينيوم" data-language-autonym="العربية" data-language-local-name="Arab" class="interlanguage-link-target">العربية</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 – Arab Maroko" lang="ary" hreflang="ary" data-title="پروطاكتينيوم" data-language-autonym="الدارجة" data-language-local-name="Arab Maroko" class="interlanguage-link-target">الدارجة</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 – Arab Mesir" lang="arz" hreflang="arz" data-title="بروتكتينيوم" data-language-autonym="مصرى" data-language-local-name="Arab Mesir" class="interlanguage-link-target">مصرى</a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Protactiniu" title="Protactiniu – Asturia" lang="ast" hreflang="ast" data-title="Protactiniu" data-language-autonym="Asturianu" data-language-local-name="Asturia" class="interlanguage-link-target">Asturianu</a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Protaktinium" title="Protaktinium – Azerbaijani" lang="az" hreflang="az" data-title="Protaktinium" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target">Azərbaycanca</a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Protaktinium" title="Protaktinium – Bali" lang="ban" hreflang="ban" data-title="Protaktinium" data-language-autonym="Basa Bali" data-language-local-name="Bali" class="interlanguage-link-target">Basa Bali</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 – Belarusia" lang="be" hreflang="be" data-title="Пратактыній" data-language-autonym="Беларуская" data-language-local-name="Belarusia" class="interlanguage-link-target">Беларуская</a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%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">Беларуская (тарашкевіца)</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 – Bulgaria" lang="bg" hreflang="bg" data-title="Протактиний" data-language-autonym="Български" data-language-local-name="Bulgaria" class="interlanguage-link-target">Български</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">भोजपुरी</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 – Bengali" lang="bn" hreflang="bn" data-title="প্রোটেক্টিনিয়াম" data-language-autonym="বাংলা" data-language-local-name="Bengali" class="interlanguage-link-target">বাংলা</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། – Tibet" lang="bo" hreflang="bo" data-title="པུ་རོ་ཊེག་ཊི་ནིམ།" data-language-autonym="བོད་ཡིག" data-language-local-name="Tibet" class="interlanguage-link-target">བོད་ཡིག</a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Protaktiniom" title="Protaktiniom – Breton" lang="br" hreflang="br" data-title="Protaktiniom" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target">Brezhoneg</a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Protaktinij" title="Protaktinij – Bosnia" lang="bs" hreflang="bs" data-title="Protaktinij" data-language-autonym="Bosanski" data-language-local-name="Bosnia" class="interlanguage-link-target">Bosanski</a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Protoactini" title="Protoactini – Katalan" lang="ca" hreflang="ca" data-title="Protoactini" data-language-autonym="Català" data-language-local-name="Katalan" class="interlanguage-link-target">Català</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">閩東語 / Mìng-dĕ̤ng-ngṳ̄</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">Cebuano</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 – Kurdi Sorani" lang="ckb" hreflang="ckb" data-title="پرۆتەکتینیۆم" data-language-autonym="کوردی" data-language-local-name="Kurdi Sorani" class="interlanguage-link-target">کوردی</a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Protoattiniu" title="Protoattiniu – Korsika" lang="co" hreflang="co" data-title="Protoattiniu" data-language-autonym="Corsu" data-language-local-name="Korsika" class="interlanguage-link-target">Corsu</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Protaktinium" title="Protaktinium – Cheska" lang="cs" hreflang="cs" data-title="Protaktinium" data-language-autonym="Čeština" data-language-local-name="Cheska" class="interlanguage-link-target">Čeština</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 – Chuvash" lang="cv" hreflang="cv" data-title="Протактиний" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target">Чӑвашла</a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Protactiniwm" title="Protactiniwm – Welsh" lang="cy" hreflang="cy" data-title="Protactiniwm" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target">Cymraeg</a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Protactinium" title="Protactinium – Dansk" lang="da" hreflang="da" data-title="Protactinium" data-language-autonym="Dansk" data-language-local-name="Dansk" class="interlanguage-link-target">Dansk</a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Protactinium" title="Protactinium – Jerman" lang="de" hreflang="de" data-title="Protactinium" data-language-autonym="Deutsch" data-language-local-name="Jerman" class="interlanguage-link-target">Deutsch</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 – Yunani" lang="el" hreflang="el" data-title="Πρωτακτίνιο" data-language-autonym="Ελληνικά" data-language-local-name="Yunani" class="interlanguage-link-target">Ελληνικά</a></li><li class="interlanguage-link interwiki-en badge-Q17437798 badge-goodarticle mw-list-item" title="artikel bagus"><a href="https://en.wikipedia.org/wiki/Protactinium" title="Protactinium – Inggris" lang="en" hreflang="en" data-title="Protactinium" data-language-autonym="English" data-language-local-name="Inggris" class="interlanguage-link-target">English</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">Esperanto</a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Protactinio" title="Protactinio – Spanyol" lang="es" hreflang="es" data-title="Protactinio" data-language-autonym="Español" data-language-local-name="Spanyol" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Protaktiinium" title="Protaktiinium – Esti" lang="et" hreflang="et" data-title="Protaktiinium" data-language-autonym="Eesti" data-language-local-name="Esti" class="interlanguage-link-target">Eesti</a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Protaktinio" title="Protaktinio – Basque" lang="eu" hreflang="eu" data-title="Protaktinio" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target">Euskara</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D8%AA%D8%A7%DA%A9%D8%AA%DB%8C%D9%86%DB%8C%D9%85" title="پروتاکتینیم – Persia" lang="fa" hreflang="fa" data-title="پروتاکتینیم" data-language-autonym="فارسی" data-language-local-name="Persia" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-fi badge-Q17559452 badge-recommendedarticle mw-list-item" title="recommended article"><a href="https://fi.wikipedia.org/wiki/Protaktinium" title="Protaktinium – Suomi" lang="fi" hreflang="fi" data-title="Protaktinium" data-language-autonym="Suomi" data-language-local-name="Suomi" class="interlanguage-link-target">Suomi</a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Protactinium" title="Protactinium – Prancis" lang="fr" hreflang="fr" data-title="Protactinium" data-language-autonym="Français" data-language-local-name="Prancis" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Protaktiinium" title="Protaktiinium – Frisia Utara" lang="frr" hreflang="frr" data-title="Protaktiinium" data-language-autonym="Nordfriisk" data-language-local-name="Frisia Utara" class="interlanguage-link-target">Nordfriisk</a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Protoatini" title="Protoatini – Friuli" lang="fur" hreflang="fur" data-title="Protoatini" data-language-autonym="Furlan" data-language-local-name="Friuli" class="interlanguage-link-target">Furlan</a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Pr%C3%B3tachtainiam" title="Prótachtainiam – Irlandia" lang="ga" hreflang="ga" data-title="Prótachtainiam" data-language-autonym="Gaeilge" data-language-local-name="Irlandia" class="interlanguage-link-target">Gaeilge</a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Protactinium" title="Protactinium – Gaelik Skotlandia" lang="gd" hreflang="gd" data-title="Protactinium" data-language-autonym="Gàidhlig" data-language-local-name="Gaelik Skotlandia" class="interlanguage-link-target">Gàidhlig</a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Protactinio" title="Protactinio – Galisia" lang="gl" hreflang="gl" data-title="Protactinio" data-language-autonym="Galego" data-language-local-name="Galisia" class="interlanguage-link-target">Galego</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 – Gujarat" lang="gu" hreflang="gu" data-title="પ્રોટેક્ટિનીયમ" data-language-autonym="ગુજરાતી" data-language-local-name="Gujarat" class="interlanguage-link-target">ગુજરાતી</a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Protaghtinnium" title="Protaghtinnium – Manx" lang="gv" hreflang="gv" data-title="Protaghtinnium" data-language-autonym="Gaelg" data-language-local-name="Manx" class="interlanguage-link-target">Gaelg</a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/Protactinium" title="Protactinium – Hakka Chinese" lang="hak" hreflang="hak" data-title="Protactinium" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="Hakka Chinese" class="interlanguage-link-target">客家語 / Hak-kâ-ngî</a></li><li class="interlanguage-link interwiki-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 – Ibrani" lang="he" hreflang="he" data-title="פרוטקטיניום" data-language-autonym="עברית" data-language-local-name="Ibrani" class="interlanguage-link-target">עברית</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">हिन्दी</a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Protactinium" title="Protactinium – Hindi Fiji" lang="hif" hreflang="hif" data-title="Protactinium" data-language-autonym="Fiji Hindi" data-language-local-name="Hindi Fiji" class="interlanguage-link-target">Fiji Hindi</a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Protaktinij" title="Protaktinij – Kroasia" lang="hr" hreflang="hr" data-title="Protaktinij" data-language-autonym="Hrvatski" data-language-local-name="Kroasia" class="interlanguage-link-target">Hrvatski</a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Protakt%C3%ADnium" title="Protaktínium – Hungaria" lang="hu" hreflang="hu" data-title="Protaktínium" data-language-autonym="Magyar" data-language-local-name="Hungaria" class="interlanguage-link-target">Magyar</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 – Armenia" lang="hy" hreflang="hy" data-title="Պրոտակտինիում" data-language-autonym="Հայերեն" data-language-local-name="Armenia" class="interlanguage-link-target">Հայերեն</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">Interlingua</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">Ido</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Protoattinio" title="Protoattinio – Italia" lang="it" hreflang="it" data-title="Protoattinio" data-language-autonym="Italiano" data-language-local-name="Italia" class="interlanguage-link-target">Italiano</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 – Jepang" 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="Jepang" class="interlanguage-link-target">日本語</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">La .lojban.</a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Protaktinium" title="Protaktinium – Jawa" lang="jv" hreflang="jv" data-title="Protaktinium" data-language-autonym="Jawa" data-language-local-name="Jawa" class="interlanguage-link-target">Jawa</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 – Georgia" lang="ka" hreflang="ka" data-title="პროტაქტინიუმი" data-language-autonym="ქართული" data-language-local-name="Georgia" class="interlanguage-link-target">ქართული</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">Kabɩyɛ</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 – Kazakh" lang="kk" hreflang="kk" data-title="Протактиний" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target">Қазақша</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">ಕನ್ನಡ</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 – Korea" lang="ko" hreflang="ko" data-title="프로트악티늄" data-language-autonym="한국어" data-language-local-name="Korea" class="interlanguage-link-target">한국어</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">Коми</a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Protaktiniom" title="Protaktiniom – Kornish" lang="kw" hreflang="kw" data-title="Protaktiniom" data-language-autonym="Kernowek" data-language-local-name="Kornish" class="interlanguage-link-target">Kernowek</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 – Kirgiz" lang="ky" hreflang="ky" data-title="Протактиний" data-language-autonym="Кыргызча" data-language-local-name="Kirgiz" class="interlanguage-link-target">Кыргызча</a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Protactinium" title="Protactinium – Latin" lang="la" hreflang="la" data-title="Protactinium" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target">Latina</a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Protactinium" title="Protactinium – Luksemburg" lang="lb" hreflang="lb" data-title="Protactinium" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luksemburg" class="interlanguage-link-target">Lëtzebuergesch</a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Protactinium" title="Protactinium – Limburgia" lang="li" hreflang="li" data-title="Protactinium" data-language-autonym="Limburgs" data-language-local-name="Limburgia" class="interlanguage-link-target">Limburgs</a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Protoattinio" title="Protoattinio – Liguria" lang="lij" hreflang="lij" data-title="Protoattinio" data-language-autonym="Ligure" data-language-local-name="Liguria" class="interlanguage-link-target">Ligure</a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Protaktinis" title="Protaktinis – Lituavi" lang="lt" hreflang="lt" data-title="Protaktinis" data-language-autonym="Lietuvių" data-language-local-name="Lituavi" class="interlanguage-link-target">Lietuvių</a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Protakt%C4%ABnijs" title="Protaktīnijs – Latvi" lang="lv" hreflang="lv" data-title="Protaktīnijs" data-language-autonym="Latviešu" data-language-local-name="Latvi" class="interlanguage-link-target">Latviešu</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 – Makedonia" lang="mk" hreflang="mk" data-title="Протактиниум" data-language-autonym="Македонски" data-language-local-name="Makedonia" class="interlanguage-link-target">Македонски</a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%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">മലയാളം</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 – Mongolia" lang="mn" hreflang="mn" data-title="Протактини" data-language-autonym="Монгол" data-language-local-name="Mongolia" class="interlanguage-link-target">Монгол</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">मराठी</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 – Western Mari" lang="mrj" hreflang="mrj" data-title="Протактиний" data-language-autonym="Кырык мары" data-language-local-name="Western Mari" class="interlanguage-link-target">Кырык мары</a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Protaktinium" title="Protaktinium – Melayu" lang="ms" hreflang="ms" data-title="Protaktinium" data-language-autonym="Bahasa Melayu" data-language-local-name="Melayu" class="interlanguage-link-target">Bahasa Melayu</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 – Burma" lang="my" hreflang="my" data-title="ပရိုတက်တီနီယမ်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burma" class="interlanguage-link-target">မြန်မာဘာသာ</a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Protactinium" title="Protactinium – Jerman Rendah" lang="nds" hreflang="nds" data-title="Protactinium" data-language-autonym="Plattdüütsch" data-language-local-name="Jerman Rendah" class="interlanguage-link-target">Plattdüütsch</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">नेपाल भाषा</a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Protactinium" title="Protactinium – Belanda" lang="nl" hreflang="nl" data-title="Protactinium" data-language-autonym="Nederlands" data-language-local-name="Belanda" class="interlanguage-link-target">Nederlands</a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Protactinium" title="Protactinium – Nynorsk Norwegia" lang="nn" hreflang="nn" data-title="Protactinium" data-language-autonym="Norsk nynorsk" data-language-local-name="Nynorsk Norwegia" class="interlanguage-link-target">Norsk nynorsk</a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Protactinium" title="Protactinium – Bokmål Norwegia" lang="nb" hreflang="nb" data-title="Protactinium" data-language-autonym="Norsk bokmål" data-language-local-name="Bokmål Norwegia" class="interlanguage-link-target">Norsk bokmål</a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Protactini" title="Protactini – Ositania" lang="oc" hreflang="oc" data-title="Protactini" data-language-autonym="Occitan" data-language-local-name="Ositania" class="interlanguage-link-target">Occitan</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">Livvinkarjala</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 – Ossetia" lang="os" hreflang="os" data-title="Протактиний" data-language-autonym="Ирон" data-language-local-name="Ossetia" class="interlanguage-link-target">Ирон</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">पालि</a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Protaktyn" title="Protaktyn – Polski" lang="pl" hreflang="pl" data-title="Protaktyn" data-language-autonym="Polski" data-language-local-name="Polski" class="interlanguage-link-target">Polski</a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Protoactini" title="Protoactini – Piedmontese" lang="pms" hreflang="pms" data-title="Protoactini" data-language-autonym="Piemontèis" data-language-local-name="Piedmontese" class="interlanguage-link-target">Piemontèis</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">پنجابی</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">پښتو</a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Protact%C3%ADnio" title="Protactínio – Portugis" lang="pt" hreflang="pt" data-title="Protactínio" data-language-autonym="Português" data-language-local-name="Portugis" class="interlanguage-link-target">Português</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">Runa Simi</a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Protactiniu" title="Protactiniu – Rumania" lang="ro" hreflang="ro" data-title="Protactiniu" data-language-autonym="Română" data-language-local-name="Rumania" class="interlanguage-link-target">Română</a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Protactiniu" title="Protactiniu – Aromania" lang="rup" hreflang="rup" data-title="Protactiniu" data-language-autonym="Armãneashti" data-language-local-name="Aromania" class="interlanguage-link-target">Armãneashti</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 – Rusia" lang="ru" hreflang="ru" data-title="Протактиний" data-language-autonym="Русский" data-language-local-name="Rusia" class="interlanguage-link-target">Русский</a></li><li class="interlanguage-link interwiki-sa mw-list-item"><a href="https://sa.wikipedia.org/wiki/%E0%A4%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 – Sanskerta" lang="sa" hreflang="sa" data-title="प्रोट्याक्टिनियम" data-language-autonym="संस्कृतम्" data-language-local-name="Sanskerta" class="interlanguage-link-target">संस्कृतम्</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 – Sakha" lang="sah" hreflang="sah" data-title="Протактиниум" data-language-autonym="Саха тыла" data-language-local-name="Sakha" class="interlanguage-link-target">Саха тыла</a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Protoat%C3%ACniu" title="Protoatìniu – Sardinia" lang="sc" hreflang="sc" data-title="Protoatìniu" data-language-autonym="Sardu" data-language-local-name="Sardinia" class="interlanguage-link-target">Sardu</a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Protoattiniu" title="Protoattiniu – Sisilia" lang="scn" hreflang="scn" data-title="Protoattiniu" data-language-autonym="Sicilianu" data-language-local-name="Sisilia" class="interlanguage-link-target">Sicilianu</a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Protactinium" title="Protactinium – Skotlandia" lang="sco" hreflang="sco" data-title="Protactinium" data-language-autonym="Scots" data-language-local-name="Skotlandia" class="interlanguage-link-target">Scots</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">سنڌي</a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Protaktinijum" title="Protaktinijum – Serbo-Kroasia" lang="sh" hreflang="sh" data-title="Protaktinijum" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Kroasia" class="interlanguage-link-target">Srpskohrvatski / српскохрватски</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">Simple English</a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Protakt%C3%ADnium" title="Protaktínium – Slovak" lang="sk" hreflang="sk" data-title="Protaktínium" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target">Slovenčina</a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Protaktinij" title="Protaktinij – Sloven" lang="sl" hreflang="sl" data-title="Protaktinij" data-language-autonym="Slovenščina" data-language-local-name="Sloven" class="interlanguage-link-target">Slovenščina</a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Protaktini" title="Protaktini – Albania" lang="sq" hreflang="sq" data-title="Protaktini" data-language-autonym="Shqip" data-language-local-name="Albania" class="interlanguage-link-target">Shqip</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 – Serbia" lang="sr" hreflang="sr" data-title="Протактинијум" data-language-autonym="Српски / srpski" data-language-local-name="Serbia" class="interlanguage-link-target">Српски / srpski</a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Protaktinium" title="Protaktinium – Saterland Frisian" lang="stq" hreflang="stq" data-title="Protaktinium" data-language-autonym="Seeltersk" data-language-local-name="Saterland Frisian" class="interlanguage-link-target">Seeltersk</a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Protaktinium" title="Protaktinium – Swedia" lang="sv" hreflang="sv" data-title="Protaktinium" data-language-autonym="Svenska" data-language-local-name="Swedia" class="interlanguage-link-target">Svenska</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">Kiswahili</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">தமிழ்</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">తెలుగు</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 – Tajik" lang="tg" hreflang="tg" data-title="Протактиний" data-language-autonym="Тоҷикӣ" data-language-local-name="Tajik" class="interlanguage-link-target">Тоҷикӣ</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 – Thai" lang="th" hreflang="th" data-title="โพรแทกทิเนียม" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target">ไทย</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">Tagalog</a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Protaktinyum" title="Protaktinyum – Turki" lang="tr" hreflang="tr" data-title="Protaktinyum" data-language-autonym="Türkçe" data-language-local-name="Turki" class="interlanguage-link-target">Türkçe</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 – Tatar" lang="tt" hreflang="tt" data-title="Протактиний" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target">Татарча / tatarça</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 – Uyghur" lang="ug" hreflang="ug" data-title="پروتاكتىنىي" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="Uyghur" class="interlanguage-link-target">ئۇيغۇرچە / Uyghurche</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 – Ukraina" lang="uk" hreflang="uk" data-title="Протактиній" data-language-autonym="Українська" data-language-local-name="Ukraina" class="interlanguage-link-target">Українська</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">اردو</a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Protaktiniy" title="Protaktiniy – Uzbek" lang="uz" hreflang="uz" data-title="Protaktiniy" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target">Oʻzbekcha / ўзбекча</a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Protaktinii" title="Protaktinii – Veps" lang="vep" hreflang="vep" data-title="Protaktinii" data-language-autonym="Vepsän kel’" data-language-local-name="Veps" class="interlanguage-link-target">Vepsän kel’</a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Protactini" title="Protactini – Vietnam" lang="vi" hreflang="vi" data-title="Protactini" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnam" class="interlanguage-link-target">Tiếng Việt</a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Protactinyo" title="Protactinyo – Warai" lang="war" hreflang="war" data-title="Protactinyo" data-language-autonym="Winaray" data-language-local-name="Warai" class="interlanguage-link-target">Winaray</a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E9%95%A4" title="镤 – Wu Tionghoa" lang="wuu" hreflang="wuu" data-title="镤" data-language-autonym="吴语" data-language-local-name="Wu Tionghoa" class="interlanguage-link-target">吴语</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 – Kalmuk" lang="xal" hreflang="xal" data-title="Протактиниум" data-language-autonym="Хальмг" data-language-local-name="Kalmuk" class="interlanguage-link-target">Хальмг</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">Yorùbá</a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%95%A4" title="镤 – Tionghoa" lang="zh" hreflang="zh" data-title="镤" data-language-autonym="中文" data-language-local-name="Tionghoa" class="interlanguage-link-target">中文</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 – Literary Chinese" lang="lzh" hreflang="lzh" data-title="鏷" data-language-autonym="文言" data-language-local-name="Literary Chinese" class="interlanguage-link-target">文言</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 – Minnan" lang="nan" hreflang="nan" data-title="Protactinium" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target">閩南語 / Bân-lâm-gú</a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%8F%B7" title="鏷 – Kanton" lang="yue" hreflang="yue" data-title="鏷" data-language-autonym="粵語" data-language-local-name="Kanton" class="interlanguage-link-target">粵語</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">IsiZulu</a></li> </ul> <div class="after-portlet after-portlet-lang"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1109#sitelinks-wikipedia" title="Sunting pranala interwiki" class="wbc-editpage">Sunting pranala</a></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Ruang nama"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Protaktinium" title="Lihat halaman isi [c]" accesskey="c">Halaman</a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Pembicaraan:Protaktinium" rel="discussion" 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vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">sembunyikan</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Dari Wikipedia bahasa Indonesia, ensiklopedia bebas</div> </div> <div id="contentSub"><div id="mw-content-subtitle">(Dialihkan dari <a href="/w/index.php?title=Protactinium&redirect=no" class="mw-redirect" title="Protactinium">Protactinium</a>)</div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="id" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r22657712">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}body.skin-minerva .mw-parser-output .infobox-header,body.skin-minerva .mw-parser-output .infobox-subheader,body.skin-minerva .mw-parser-output .infobox-above,body.skin-minerva .mw-parser-output .infobox-title,body.skin-minerva .mw-parser-output .infobox-image,body.skin-minerva .mw-parser-output .infobox-full-data,body.skin-minerva .mw-parser-output .infobox-below{text-align:center}</style><style data-mw-deduplicate="TemplateStyles:r26333552">.mw-parser-output .ib-station-name{display:table-cell;vertical-align:middle}@media only screen and (min-width:720px){.mw-parser-output .ib-station{width:25.5em}.mw-parser-output .ib-station-name{width:inherit}}</style><table class="infobox ib-country vcard" style="font-size:88%;"><tbody><tr><th colspan="2" class="infobox-above adr" style="background:lightgray;padding:0.25em 0.33em 0.33em;line-height:1.2em;font-size:1.25em;"><div style="float:right;display:inline;background:lightgray;font-size:150%;">91Pa</div>Protaktinium</th></tr><tr><td colspan="2" class="infobox-image"><a href="/wiki/Berkas:Protactinium-233.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/af/Protactinium-233.jpg/220px-Protactinium-233.jpg" decoding="async" width="220" height="175" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/af/Protactinium-233.jpg/330px-Protactinium-233.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/af/Protactinium-233.jpg/440px-Protactinium-233.jpg 2x" data-file-width="3200" data-file-height="2542" /></a><div class="infobox-caption">Sampel protaktinium-233 (area lingkaran gelap) dalam cahaya dari radioaktivitasnya sendiri</div></td></tr><tr><td colspan="2" class="infobox-image"><div style="background:black"><a href="/wiki/Berkas:Protactinium_spectrum_visible.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Protactinium_spectrum_visible.png/220px-Protactinium_spectrum_visible.png" decoding="async" width="220" height="38" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Protactinium_spectrum_visible.png/330px-Protactinium_spectrum_visible.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Protactinium_spectrum_visible.png/440px-Protactinium_spectrum_visible.png 2x" data-file-width="7430" data-file-height="1280" /></a> </div><div class="infobox-caption">Garis spektrum protaktinium</div></td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center; line-height:normal;background:#ff99cc">Sifat umum</th></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em">Pengucapan</th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">/protaktinium/<a href="#cite_note-1">[1]</a> </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em">Penampilan</th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">metalik keperakan yang berkilau cerah</td></tr><tr><td colspan="2" class="infobox-full-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r22657712"></td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center; line-height:normal;background:#ff99cc">Protaktinium dalam <a href="/wiki/Tabel_periodik" title="Tabel periodik">tabel periodik</a></th></tr><tr><td colspan="2" class="infobox-full-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><div style="z-index:1;overflow:hidden;position:absolute;font-size:120%;right:185px;margin:0.1em;font-family:'Linux Libertine',Georgia,Times,serif ; line-height:0.9"><figure class="mw-halign-right" typeof="mw:File"><a href="/wiki/Media:Electron_shell_091_Protactinium.svg" title="Media:Electron shell 091 Protactinium.svg"><img alt="Perbesar gambar" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Electron_shell_091_Protactinium.svg/50px-Electron_shell_091_Protactinium.svg.png" decoding="async" width="50" height="54" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Electron_shell_091_Protactinium.svg/75px-Electron_shell_091_Protactinium.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Electron_shell_091_Protactinium.svg/100px-Electron_shell_091_Protactinium.svg.png 2x" data-file-width="800" data-file-height="860" /></a><figcaption></figcaption></figure></div> <div style="z-index:1;overflow:hidden;position:absolute;font-size:120%;right:140px;margin:0.1em;font-family:'Linux Libertine',Georgia,Times,serif ; line-height:0.9"> 91Pa</div> <table class="wikitable" style="text-align:center; width:100%; margin:0; background:#f8f8f8;"> <tbody><tr> <td> <table class="periodictable" style="margin:0 auto"> <tbody><tr> <td style="border:none; width:5px"><div style="background-color:transparent; margin:0; padding:0; text-align:center; border:none;"> <table style="empty-cells:hidden; border:none; padding:0; border-spacing:1px; border-collapse:separate; margin:0;"> <tbody><tr> <td style="border:none;padding:0;"><a href="/wiki/Hidrogen" title="Hidrogen">Hidrogen</a> </td> <td colspan="30" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Helium" title="Helium">Helium</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Lithium" class="mw-redirect" title="Lithium">Lithium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Berilium" title="Berilium">Berilium</a> </td> <td colspan="24" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Boron" title="Boron">Boron</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Karbon" title="Karbon">Karbon</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nitrogen" title="Nitrogen">Nitrogen</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Oksigen" title="Oksigen">Oksigen</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fluor" class="mw-redirect" title="Fluor">Fluor</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neon" title="Neon">Neon</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Natrium" title="Natrium">Natrium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Magnesium" title="Magnesium">Magnesium</a> </td> <td colspan="24" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Aluminium" title="Aluminium">Aluminium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Silikon" title="Silikon">Silikon</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fosfor" title="Fosfor">Fosfor</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Sulfur" class="mw-redirect" title="Sulfur">Sulfur</a> </td> <td style="border:none;padding:0;"><a href="/w/index.php?title=Clor&action=edit&redlink=1" class="new" title="Clor (halaman belum tersedia)">Clor</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Argon" title="Argon">Argon</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Potasium" class="mw-redirect" title="Potasium">Potasium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Kalsium" title="Kalsium">Kalsium</a> </td> <td colspan="14" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Skandium" title="Skandium">Skandium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Titanium" title="Titanium">Titanium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Vanadium" title="Vanadium">Vanadium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Chromium" class="mw-redirect" title="Chromium">Chromium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mangan" title="Mangan">Mangan</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Besi" title="Besi">Besi</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cobalt" class="mw-redirect" title="Cobalt">Cobalt</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nikel" title="Nikel">Nikel</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tembaga" title="Tembaga">Tembaga</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Seng" title="Seng">Seng</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gallium" class="mw-redirect" title="Gallium">Gallium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Germanium" title="Germanium">Germanium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Arsen" title="Arsen">Arsen</a> </td> <td style="border:none;padding:0;"><a href="/w/index.php?title=Selen&action=edit&redlink=1" class="new" title="Selen (halaman belum tersedia)">Selen</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bromin" title="Bromin">Bromin</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Kripton" title="Kripton">Kripton</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Rubidium" title="Rubidium">Rubidium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Strontium" class="mw-redirect" title="Strontium">Strontium</a> </td> <td style="border:none;padding:0;; width:0;"> </td> <td colspan="13" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Yttrium" class="mw-redirect" title="Yttrium">Yttrium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Zirconium" class="mw-redirect" title="Zirconium">Zirconium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Niobium" title="Niobium">Niobium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Molybdenum" class="mw-redirect" title="Molybdenum">Molybdenum</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Technetium" class="mw-redirect" title="Technetium">Technetium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Ruthenium" class="mw-redirect" title="Ruthenium">Ruthenium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rhodium" class="mw-redirect" title="Rhodium">Rhodium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Palladium" class="mw-redirect" title="Palladium">Palladium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Silver" class="mw-redirect" title="Silver">Silver</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cadmium" class="mw-redirect" title="Cadmium">Cadmium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Indium" title="Indium">Indium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tin" title="Tin">Tin</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Antimony" class="mw-redirect" title="Antimony">Antimony</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tellurium" class="mw-redirect" title="Tellurium">Tellurium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iodine" class="mw-redirect" title="Iodine">Iodine</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Xenon" title="Xenon">Xenon</a> </td></tr> <tr style="border:none;padding:0;"> <td style="border:none;padding:0;"><a href="/wiki/Caesium" class="mw-redirect" title="Caesium">Caesium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Barium" title="Barium">Barium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lanthanum" class="mw-redirect" title="Lanthanum">Lanthanum</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cerium" class="mw-redirect" title="Cerium">Cerium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Praseodymium" class="mw-redirect" title="Praseodymium">Praseodymium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neodymium" class="mw-redirect" title="Neodymium">Neodymium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Promethium" class="mw-redirect" title="Promethium">Promethium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Samarium" title="Samarium">Samarium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Europium" title="Europium">Europium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gadolinium" title="Gadolinium">Gadolinium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Terbium" title="Terbium">Terbium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Dysprosium" class="mw-redirect" title="Dysprosium">Dysprosium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Holmium" title="Holmium">Holmium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Erbium" title="Erbium">Erbium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thulium" class="mw-redirect" title="Thulium">Thulium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Ytterbium" class="mw-redirect" title="Ytterbium">Ytterbium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lutetium" class="mw-redirect" title="Lutetium">Lutetium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Hafnium" title="Hafnium">Hafnium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tantalum" title="Tantalum">Tantalum</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tungsten" class="mw-redirect" title="Tungsten">Tungsten</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rhenium" class="mw-redirect" title="Rhenium">Rhenium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Osmium" title="Osmium">Osmium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iridium" title="Iridium">Iridium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Platinum" class="mw-redirect" title="Platinum">Platinum</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gold" class="mw-redirect" title="Gold">Gold</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mercury_(element)" class="mw-redirect" title="Mercury (element)">Mercury (element)</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thallium" class="mw-redirect" title="Thallium">Thallium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lead" class="mw-redirect" title="Lead">Lead</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bismuth" class="mw-redirect" title="Bismuth">Bismuth</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Polonium" title="Polonium">Polonium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Astatine" class="mw-redirect" title="Astatine">Astatine</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Radon" title="Radon">Radon</a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Francium" class="mw-redirect" title="Francium">Francium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Radium" title="Radium">Radium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Actinium" class="mw-redirect" title="Actinium">Actinium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thorium" class="mw-redirect" title="Thorium">Thorium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Protactinium" class="mw-redirect" title="Protactinium">Protactinium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Uranium" title="Uranium">Uranium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neptunium" title="Neptunium">Neptunium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Plutonium" title="Plutonium">Plutonium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Americium" class="mw-redirect" title="Americium">Americium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Curium" class="mw-redirect" title="Curium">Curium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Berkelium" title="Berkelium">Berkelium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Californium" class="mw-redirect" title="Californium">Californium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Einsteinium" title="Einsteinium">Einsteinium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fermium" title="Fermium">Fermium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mendelevium" title="Mendelevium">Mendelevium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nobelium" title="Nobelium">Nobelium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lawrencium" class="mw-redirect" title="Lawrencium">Lawrencium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rutherfordium" class="mw-redirect" title="Rutherfordium">Rutherfordium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Dubnium" title="Dubnium">Dubnium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Seaborgium" title="Seaborgium">Seaborgium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bohrium" title="Bohrium">Bohrium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Hassium" class="mw-redirect" title="Hassium">Hassium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Meitnerium" title="Meitnerium">Meitnerium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Darmstadtium" title="Darmstadtium">Darmstadtium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Roentgenium" title="Roentgenium">Roentgenium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Copernicium" class="mw-redirect" title="Copernicium">Copernicium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nihonium" title="Nihonium">Nihonium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Flerovium" title="Flerovium">Flerovium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Moscovium" class="mw-redirect" title="Moscovium">Moscovium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Livermorium" title="Livermorium">Livermorium</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tennessine" class="mw-redirect" title="Tennessine">Tennessine</a> </td> <td style="border:none;padding:0;"><a href="/wiki/Oganesson" class="mw-redirect" title="Oganesson">Oganesson</a> </td></tr></tbody></table> </div> </td> <td style="vertical-align:middle; text-align:center; font-size:90%; line-height:100%; width:10px; border:none;"><a href="/wiki/Praseodimium" title="Praseodimium">Pr</a> ↑ Pa ↓ (Uqp) </td></tr> <tr> <td colspan="2" class="nowrap" style="text-align:center; font-size:90%; line-height:100%; padding-top:0; padding-bottom:1px; border:none;"><a href="/wiki/Torium" title="Torium">torium</a> ← protaktinium → <a href="/wiki/Uranium" title="Uranium">uranium</a> </td></tr></tbody></table> </td></tr></tbody></table> <a href="/wiki/Templat:Navbox_unsur_diperbesar" title="Templat:Navbox unsur diperbesar">Lihat bagan navigasi yang diperbesar</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Nomor_atom" title="Nomor atom">Nomor atom</a> (Z)</th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">91</td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Golongan_(tabel_periodik)" class="mw-redirect" title="Golongan (tabel periodik)">Golongan</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><a href="/wiki/Blok_tabel_periodik" title="Blok tabel periodik">golongan n/a</a> </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Periode_(tabel_periodik)" class="mw-redirect" title="Periode (tabel periodik)">Periode</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><a href="/wiki/Periode_(tabel_periodik)#Periode_7" class="mw-redirect" title="Periode (tabel periodik)">periode 7</a> </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Blok_(tabel_periodik)" class="mw-redirect" title="Blok (tabel periodik)">Blok</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><a href="/wiki/Blok-f" class="mw-redirect" title="Blok-f">blok-f</a> </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Nama_kategori_unsur_kimia#Kategori" title="Nama kategori unsur kimia">Kategori unsur</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">  <a href="/wiki/Aktinida" title="Aktinida">aktinida</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Berat_atom_standar" class="mw-redirect" title="Berat atom standar">Berat atom standar</a> (Ar)</th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><style data-mw-deduplicate="TemplateStyles:r23782729">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li>231,03588±0,00001</li><li>231,04±0,01 (diringkas)</li></ul></div></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Konfigurasi_elektron" title="Konfigurasi elektron">Konfigurasi elektron</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">[<a href="/wiki/Radon" title="Radon">Rn</a>] 5f2 6d1 7s2 </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Kelopak_elektron" title="Kelopak elektron">Elektron per kelopak</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">2, 8, 18, 32, 20, 9, 2</td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center; line-height:normal;background:#ff99cc">Sifat fisik</th></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Fase_benda" title="Fase benda">Fase</a> pada <a href="/wiki/Temperatur_dan_tekanan_standar" title="Temperatur dan tekanan standar">STS</a> (0 °C dan 101,325 <a href="/wiki/Pascal_(satuan)" title="Pascal (satuan)">kPa</a>)</th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><a href="/wiki/Padat" title="Padat">padat</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Titik_lebur" title="Titik lebur">Titik lebur</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">1841 <a href="/wiki/Kelvin" title="Kelvin">K</a> (1568 °C, 2854 °F) </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Titik_didih" title="Titik didih">Titik didih</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">4300 K (4027 °C, 7280 °F) (?)</td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Massa_jenis" title="Massa jenis">Kepadatan</a> mendekati <a href="/wiki/Suhu_kamar" title="Suhu kamar">s.k.</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">15,37 g/cm3</td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Kalor_peleburan" title="Kalor peleburan">Kalor peleburan</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">12,34 <a href="/wiki/Joule_per_mol" title="Joule per mol">kJ/mol</a> </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Entalpi_penguapan" title="Entalpi penguapan">Kalor penguapan</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">481 kJ/mol </td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center; line-height:normal;background:#ff99cc">Sifat atom</th></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Bilangan_oksidasi" title="Bilangan oksidasi">Bilangan oksidasi</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">+2, +3, +4, +5 (oksida <a href="/wiki/Basa" title="Basa">basa</a> lemah)</td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Elektronegativitas" title="Elektronegativitas">Elektronegativitas</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">Skala Pauling: 1,5 </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Energi_ionisasi" title="Energi ionisasi">Energi ionisasi</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">ke-1: 568 kJ/mol </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Jari-jari_atom" title="Jari-jari atom">Jari-jari atom</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">empiris: 163 <a href="/wiki/Pikometer" title="Pikometer">pm</a> </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Jari-jari_kovalen" title="Jari-jari kovalen">Jari-jari kovalen</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">200 pm </td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center; line-height:normal;background:#ff99cc">Lain-lain</th></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em">Kelimpahan alami</th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><a href="/wiki/Radioisotop_renik" title="Radioisotop renik">dari peluruhan</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Struktur_kristal" title="Struktur kristal">Struktur kristal</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"> <a href="/w/index.php?title=Sistem_kristal_tetragon&action=edit&redlink=1" class="new" title="Sistem kristal tetragon (halaman belum tersedia)">tetragon acuan dasar</a><a href="#cite_note-str-2">[2]</a><div style="float:right;"><a href="/wiki/Berkas:Body-centered_tetragonal.svg" class="mw-file-description"><img alt="Struktur kristal Body-centered tetragonal untuk protaktinium" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Body-centered_tetragonal.svg/50px-Body-centered_tetragonal.svg.png" decoding="async" width="50" height="76" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Body-centered_tetragonal.svg/75px-Body-centered_tetragonal.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Body-centered_tetragonal.svg/100px-Body-centered_tetragonal.svg.png 2x" data-file-width="108" data-file-height="165" /></a></div></td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Pemuaian" title="Pemuaian">Ekspansi kalor</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">~9,9 µm/(m·K)<a href="#cite_note-3">[3]</a> (pada <abbr title="suhu kamar">s.k.</abbr>)</td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Konduktivitas_termal" title="Konduktivitas termal">Konduktivitas termal</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">47 W/(m·K) </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Resistivitas_listrik" class="mw-redirect" title="Resistivitas listrik">Resistivitas listrik</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">177 nΩ·m (suhu 0 °C) </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Magnetisme" title="Magnetisme">Arah magnet</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><a href="/wiki/Paramagnetisme" title="Paramagnetisme">paramagnetik</a><a href="#cite_note-magnet-4">[4]</a> </td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Nomor_CAS" title="Nomor CAS">Nomor CAS</a></th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;">7440-13-3 </td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center; line-height:normal;background:#ff99cc">Sejarah</th></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em">Prediksi</th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><a href="/wiki/Dmitri_Mendeleev" title="Dmitri Mendeleev">D. Mendeleev</a> (1869)</td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em"><a href="/wiki/Penemuan_unsur_kimia" title="Penemuan unsur kimia">Penemuan</a> dan isolasi pertama</th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><a href="/wiki/Kazimierz_Fajans" title="Kazimierz Fajans">K. Fajans</a> dan <a href="/w/index.php?title=Oswald_Helmuth_G%C3%B6hring&action=edit&redlink=1" class="new" title="Oswald Helmuth Göhring (halaman belum tersedia)">Oswald H. Göhring</a> (1913)</td></tr><tr><th scope="row" class="infobox-label" style="line-height:1.15em; padding-right:0.75em;;padding-left:0.35em">Asal nama</th><td class="infobox-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"><a href="/wiki/Otto_Hahn" title="Otto Hahn">O. Hahn</a> dan <a href="/wiki/Lise_Meitner" title="Lise Meitner">L. Meitner</a> (1917–8)</td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center; line-height:normal;background:#ff99cc"><a href="/wiki/Isotop_protaktinium" title="Isotop protaktinium">Isotop protaktinium</a> yang utama</th></tr><tr><td colspan="2" class="infobox-full-data" style="padding-left:0em; padding-right:0em;line-height:1.35em;"> <table class="wikitable" cellpadding="1" style="text-align:center;width:100%; border-collapse:collapse; margin:0; padding:0;"> <tbody><tr> <th><a href="/wiki/Isotop" title="Isotop">Isotop</a> </th> <th><a href="/wiki/Kelimpahan_alami" class="mw-redirect" title="Kelimpahan alami">Kelimpahan</a> </th> <th><a href="/wiki/Waktu_paruh" title="Waktu paruh">Waktu paruh</a> (t1/2) </th> <th><a href="/wiki/Peluruhan_radioaktif#Mode_peluruhan" title="Peluruhan radioaktif">Mode peluruhan</a> </th> <th><a href="/wiki/Produk_peluruhan" title="Produk peluruhan">Produk</a> </th></tr> <tr> <th style="text-align:right;">229Pa </th> <td style="text-align:center;"><a href="/wiki/Radioisotop_sintetis" title="Radioisotop sintetis">sintetis</a> </td> <td style="text-align:right;">1,5 hri </td> <td><a href="/wiki/Penangkapan_elektron" class="mw-redirect" title="Penangkapan elektron">ε</a> </td> <td style="text-align:right;"><a href="/wiki/Torium-229" class="mw-redirect" title="Torium-229">229Th</a> </td></tr> <tr> <th style="text-align:right;">230Pa </th> <td style="text-align:center;">sintetis </td> <td style="text-align:right;">17,4 hri </td> <td>ε </td> <td style="text-align:right;"><a href="/wiki/Torium-230" class="mw-redirect" title="Torium-230">230Th</a> </td></tr> <tr> <th style="text-align:right;">231Pa </th> <td style="text-align:right;">100% </td> <td style="text-align:right;">3,276×104 thn </td> <td><a href="/wiki/Peluruhan_alfa" title="Peluruhan alfa">α</a> </td> <td style="text-align:right;"><a href="/wiki/Aktinium-227" class="mw-redirect" title="Aktinium-227">227Ac</a> </td></tr> <tr> <th style="text-align:right;">232Pa </th> <td style="text-align:center;">sintetis </td> <td style="text-align:right;">1,31 hri </td> <td><a href="/wiki/Peluruhan_beta" title="Peluruhan beta">β−</a> </td> <td style="text-align:right;"><a href="/wiki/Uranium-232" title="Uranium-232">232U</a> </td></tr> <tr> <th style="text-align:right;">233Pa </th> <td style="text-align:center;"><a href="/wiki/Radioisotop_renik" title="Radioisotop renik">renik</a> </td> <td style="text-align:right;">26,967 hri </td> <td>β− </td> <td style="text-align:right;"><a href="/wiki/Uranium-233" title="Uranium-233">233U</a> </td></tr> <tr> <th style="text-align:right;">234Pa </th> <td style="text-align:center;">renik </td> <td style="text-align:right;">6,75 jam </td> <td>β− </td> <td style="text-align:right;">234U </td></tr> <tr> <th style="text-align:right;">234<a href="/wiki/Isomer_nuklir" title="Isomer nuklir">m</a>Pa </th> <td style="text-align:center;">renik </td> <td style="text-align:right;">1,17 mnt </td> <td>β− </td> <td style="text-align:right;"><a href="/wiki/Uranium-234" title="Uranium-234">234U</a> </td></tr></tbody></table><div style="clear:both;"></div></td></tr><tr><td colspan="2" class="infobox-below noprint" style="border-top:1px dotted #ff99cc; line-height:0.7"><style data-mw-deduplicate="TemplateStyles:r18590415">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}.mw-parser-output .infobox .navbar{font-size:100%}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}</style><div class="navbar plainlinks hlist"><ul><li class="nv-lihat"><a href="/wiki/Templat:Kotak_info_protaktinium" title="Templat:Kotak info protaktinium">lihat</a></li><li class="nv-bicara"><a href="/w/index.php?title=Pembicaraan_Templat:Kotak_info_protaktinium&action=edit&redlink=1" class="new" title="Pembicaraan Templat:Kotak info protaktinium (halaman belum tersedia)">bicara</a></li><li class="nv-sunting"><a class="external text" href="https://id.wikipedia.org/w/index.php?title=Templat:Kotak_info_protaktinium&action=edit">sunting</a></li></ul></div>| <a href="https://en.wikipedia.org/wiki/List_of_data_references_for_chemical_elements" class="extiw" title="en:List of data references for chemical elements">referensi</a> | <a href="https://www.wikidata.org/wiki/Q1109" class="extiw" title="d:Q1109">di Wikidata</a></td></tr></tbody></table> Protaktinium (sebelumnya protoaktinium) adalah sebuah <a href="/wiki/Unsur_kimia" title="Unsur kimia">unsur kimia</a> <a href="/wiki/Peluruhan_radioaktif" title="Peluruhan radioaktif">radioaktif</a> dengan <a href="/wiki/Lambang_unsur" title="Lambang unsur">lambang</a> Pa dan <a href="/wiki/Nomor_atom" title="Nomor atom">nomor atom</a> 91. Ia adalah logam <a href="/wiki/Aktinida" title="Aktinida">aktinida</a> padat berwarna abu-abu keperakan yang mudah bereaksi dengan <a href="/wiki/Oksigen" title="Oksigen">oksigen</a>, uap air, dan <a href="/wiki/Asam" title="Asam">asam</a> anorganik. Ia membentuk berbagai <a href="/wiki/Senyawa_kimia" title="Senyawa kimia">senyawa kimia</a> di mana protaktinium biasanya hadir dalam <a href="/wiki/Bilangan_oksidasi" title="Bilangan oksidasi">keadaan oksidasi</a> +5, tetapi ia juga memiliki keadaan +4 dan bahkan +3 atau +2. Konsentrasi protaktinium di kerak bumi biasanya beberapa bagian per triliun, tetapi dapat mencapai hingga beberapa bagian per juta pada beberapa endapan bijih <a href="/wiki/Uraninit" title="Uraninit">uraninit</a>. Karena kelangkaannya, serta radioaktivitasnya dan toksisitasnya yang tinggi, saat ini protaktinium tidak digunakan di luar penelitian ilmiah, dan untuk tujuan ini, protaktinium sebagian besar diekstraksi dari <a href="/wiki/Bahan_bakar_nuklir_bekas" title="Bahan bakar nuklir bekas">bahan bakar nuklir bekas</a>. Unsur ini pertama kali diidentifikasi pada tahun 1913 oleh <a href="/wiki/Kazimierz_Fajans" title="Kazimierz Fajans">Kazimierz Fajans</a> dan <a href="/w/index.php?title=Oswald_Helmuth_G%C3%B6hring&action=edit&redlink=1" class="new" title="Oswald Helmuth Göhring (halaman belum tersedia)">Oswald Göhring</a> dan diberi nama "brevium" karena <a href="/wiki/Waktu_paruh" title="Waktu paruh">waktu paruh</a> pendek dari <a href="/wiki/Isotop" title="Isotop">isotop</a> spesifik yang dipelajari, yaitu protaktinium-234. Isotop protaktinium yang lebih stabil, 231Pa, ditemukan pada 1917/18 oleh <a href="/wiki/Lise_Meitner" title="Lise Meitner">Lise Meitner</a> yang bekerja sama dengan <a href="/wiki/Otto_Hahn" title="Otto Hahn">Otto Hahn</a>, dan mereka memilih nama protaktinium.<a href="#cite_note-meitner-5">[5]</a> <a href="/wiki/Persatuan_Kimia_Murni_dan_Terapan_Internasional" title="Persatuan Kimia Murni dan Terapan Internasional">IUPAC</a> memilih nama "protaktinium" pada tahun 1949 dan mengukuhkan Hahn dan Meitner sebagai penemunya. Nama baru ini memiliki arti "<a href="/wiki/Prekursor_(kimia)" title="Prekursor (kimia)">prekursor</a> (nuklir)<a href="#cite_note-6">[6]</a> <a href="/wiki/Aktinium" title="Aktinium">aktinium</a>" dan mencerminkan bahwa aktinium adalah <a href="/wiki/Produk_peluruhan" title="Produk peluruhan">produk peluruhan</a> radioaktif protaktinium. <a href="/w/index.php?title=John_Arnold_Cranston&action=edit&redlink=1" class="new" title="John Arnold Cranston (halaman belum tersedia)">John Cranston</a> (bekerja dengan <a href="/wiki/Frederick_Soddy" title="Frederick Soddy">Frederick Soddy</a> dan <a href="/w/index.php?title=Ada_Hitchins&action=edit&redlink=1" class="new" title="Ada Hitchins (halaman belum tersedia)">Ada Hitchins</a>) juga dikreditkan dengan menemukan isotop protaktinium paling stabil pada tahun 1915, tetapi menunda pengumumannya karena dia dipanggil untuk bertugas pada <a href="/wiki/Perang_Dunia_I" title="Perang Dunia I">Perang Dunia Pertama</a>.<a href="#cite_note-7">[7]</a> <a href="/wiki/Isotop" title="Isotop">Isotop</a> protaktinium yang paling lama hidup dan paling melimpah (hampir 100%) secara alami, protaktinium-231, memiliki <a href="/wiki/Waktu_paruh" title="Waktu paruh">waktu paruh</a> 32.760 tahun dan merupakan produk peluruhan <a href="/wiki/Uranium-235" title="Uranium-235">uranium-235</a>. Jumlah renik yang jauh lebih kecil dari protaktinium-234 dan <a href="/wiki/Isomer_nuklir" title="Isomer nuklir">isomer nuklirnya</a> protaktinium-234m berumur pendek terjadi dalam rantai peluruhan <a href="/wiki/Uranium-238" title="Uranium-238">uranium-238</a>. Protaktinium-233 dihasilkan dari peluruhan <a href="/wiki/Torium" title="Torium">torium</a>-233 sebagai bagian dari rangkaian peristiwa yang digunakan untuk menghasilkan <a href="/wiki/Uranium-233" title="Uranium-233">uranium-233</a> melalui penyinaran neutron terhadap torium-232. Ia adalah produk intermediat yang tidak diinginkan dalam <a href="/wiki/Reaktor_nuklir" title="Reaktor nuklir">reaktor nuklir</a> berbasis torium dan karena itu ia dikeluarkan dari zona aktif reaktor selama proses pembiakan. Ilmu kelautan memanfaatkan unsur ini untuk memahami lautan purba. Analisis konsentrasi relatif berbagai isotop uranium, torium, dan protaktinium dalam air dan mineral digunakan dalam <a href="/wiki/Penanggalan_radiometrik" title="Penanggalan radiometrik">penanggalan radiometrik</a> <a href="/wiki/Sedimen" class="mw-redirect" title="Sedimen">sedimen</a> yang berusia hingga 175.000 tahun dan dalam pemodelan berbagai proses geologis.<a href="#cite_note-8">[8]</a> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Sejarah">Sejarah</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=1" title="Sunting bagian: Sejarah" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=1" title="Sunting kode sumber bagian: Sejarah">sunting sumber</a>]</div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/Berkas:Periodensystem_Mendelejews.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/74/Periodensystem_Mendelejews.jpg/330px-Periodensystem_Mendelejews.jpg" decoding="async" width="330" height="151" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/74/Periodensystem_Mendelejews.jpg/495px-Periodensystem_Mendelejews.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/74/Periodensystem_Mendelejews.jpg/660px-Periodensystem_Mendelejews.jpg 2x" data-file-width="709" data-file-height="325" /></a><figcaption>Tabel periodik <a href="/wiki/Dmitri_Mendeleev" title="Dmitri Mendeleev">Dmitri Mendeleev</a> tahun 1871 dengan celah untuk protaktinium di baris bawah tabel, antara torium dan uranium</figcaption></figure> Pada tahun 1871, <a href="/wiki/Dmitri_Mendeleev" title="Dmitri Mendeleev">Dmitri Mendeleev</a> <a href="/wiki/Unsur-unsur_prediksi_Mendeleev" title="Unsur-unsur prediksi Mendeleev">meramalkan</a> adanya unsur antara <a href="/wiki/Torium" title="Torium">torium</a> dan <a href="/wiki/Uranium" title="Uranium">uranium</a>.<a href="#cite_note-Emsley-9">[9]</a> Deret aktinida tidak diketahui pada saat itu. Oleh karena itu, uranium ditempatkan di bawah <a href="/wiki/Wolfram" title="Wolfram">wolfram</a> di golongan VI, dan torium di bawah <a href="/wiki/Zirkonium" title="Zirkonium">zirkonium</a> di golongan IV, meninggalkan ruang kosong di bawah <a href="/wiki/Tantalum" title="Tantalum">tantalum</a> di golongan V; sampai penerimaan <a href="/wiki/Konsep_aktinida" title="Konsep aktinida">konsep aktinida</a> pada akhir 1940-an, <a href="/wiki/Tabel_periodik" title="Tabel periodik">tabel periodik</a> diterbitkan dengan struktur ini.<a href="#cite_note-10">[10]</a> Untuk waktu yang lama, para kimiawan mencari eka-tantalum sebagai unsur dengan sifat kimia yang mirip dengan tantalum, membuat penemuan protaktinium hampir mustahil. Analog tantalum yang lebih berat kemudian ditemukan sebagai <a href="/wiki/Unsur_transuranium" title="Unsur transuranium">unsur transuranium</a> <a href="/wiki/Dubnium" title="Dubnium">dubnium</a> – yang, bagaimanapun, tidak bereaksi seperti tantalum, tetapi seperti protaktinium.<a href="#cite_note-Fessl-11">[11]</a> Pada tahun 1900, <a href="/wiki/William_Crookes" title="William Crookes">William Crookes</a> mengisolasi protaktinium sebagai bahan radioaktif yang sangat kuat dari uranium; namun, dia tidak dapat mengarakterisasinya sebagai unsur kimia baru dan dengan demikian menamainya uranium-X (UX).<a href="#cite_note-Emsley-9">[9]</a><a href="#cite_note-google-12">[12]</a><a href="#cite_note-13">[13]</a> Crookes melarutkan <a href="/wiki/Uranil_nitrat" title="Uranil nitrat">uranium nitrat</a> dalam <a href="/wiki/Dietil_eter" title="Dietil eter">eter</a>, dan fase berair residual mengandung sebagian besar 234 90Th dan 234 91Pa. Metode ini masih digunakan pada tahun 1950-an untuk mengisolasi 234 90Th dan 234 91Pa dari senyawa uranium.<a href="#cite_note-14">[14]</a> Protaktinium pertama kali diidentifikasi pada tahun 1913, ketika <a href="/wiki/Kazimierz_Fajans" title="Kazimierz Fajans">Kasimir Fajans</a> dan <a href="/w/index.php?title=Oswald_Helmuth_G%C3%B6hring&action=edit&redlink=1" class="new" title="Oswald Helmuth Göhring (halaman belum tersedia)">Oswald Göhring</a> menemukan isotop 234Pa selama studi mereka mengenai <a href="/wiki/Deret_radioaktif" title="Deret radioaktif">rantai peluruhan</a> <a href="/wiki/Uranium-238" title="Uranium-238">uranium-238</a>: 238 92U → 234 90Th → 234 91Pa → 234 92U. Mereka menamai unsur baru ini "<a href="/wiki/Isotop_protaktinium#Protaktinium-234m" title="Isotop protaktinium">brevium</a>" (dari kata Latin, brevis, yang berarti singkat atau pendek) karena waktu paruhnya yang singkat, 6,7 jam untuk 234 91Pa.<a href="#cite_note-g1250-15">[15]</a><a href="#cite_note-g1254-16">[16]</a><a href="#cite_note-17">[17]</a><a href="#cite_note-18">[18]</a><a href="#cite_note-Scerri-19">[19]</a> Pada tahun 1917/18, dua kelompok ilmuwan, <a href="/wiki/Lise_Meitner" title="Lise Meitner">Lise Meitner</a> yang bekerja sama dengan <a href="/wiki/Otto_Hahn" title="Otto Hahn">Otto Hahn</a> dari <a href="/wiki/Jerman" title="Jerman">Jerman</a> serta <a href="/wiki/Frederick_Soddy" title="Frederick Soddy">Frederick Soddy</a> dan John Cranston dari <a href="/wiki/Pulau_Britania_Raya" title="Pulau Britania Raya">Britania Raya</a>, secara terpisah menemukan isotop protaktinium lain, 231Pa, yang memiliki waktu paruh lebih lama, sekitar 33.000 tahun.<a href="#cite_note-meitner-5">[5]</a><a href="#cite_note-Scerri-19">[19]</a><a href="#cite_note-20">[20]</a> Dengan demikian, nama "brevium" diubah menjadi protaktinium<a href="#cite_note-meitner-5">[5]</a> karena unsur baru tersebut merupakan bagian dari rantai peluruhan uranium-235 sebagai induk dari aktinium (dari <a href="/wiki/Bahasa_Yunani" title="Bahasa Yunani">bahasa Yunani</a>: πρῶτος prôtos "pertama, sebelum"). <a href="/wiki/Persatuan_Kimia_Murni_dan_Terapan_Internasional" title="Persatuan Kimia Murni dan Terapan Internasional">IUPAC</a> mengonfirmasi penamaan ini pada tahun 1949.<a href="#cite_note-CRC-21">[21]</a><a href="#cite_note-g1251-22">[22]</a> Penemuan protaktinium menyelesaikan salah satu celah terakhir dalam versi awal tabel periodik, yang diusulkan oleh Mendeleev pada tahun 1869, dan membuat para ilmuwan yang terlibat menjadi terkenal.<a href="#cite_note-23">[23]</a> <a href="/wiki/Aristid_von_Grosse" title="Aristid von Grosse">Aristid von Grosse</a> memroduksi 2 miligram Pa2O5 pada tahun 1927,<a href="#cite_note-24">[24]</a> dan pada tahun 1934 pertama kali mengisolasi protaktinium elemental dari 0,1 miligram Pa2O5.<a href="#cite_note-25">[25]</a> Dia menggunakan dua prosedur berbeda: yang pertama, protaktinium oksida disinari oleh elektron 35 keV dalam ruang hampa. Dalam metode lain, yang disebut <a href="/wiki/Proses_van_Arkel%E2%80%93de_Boer" title="Proses van Arkel–de Boer">proses van Arkel–de Boer</a>, oksida itu diubah secara kimiawi menjadi <a href="/wiki/Halida" title="Halida">halida</a> (<a href="/wiki/Klorida" title="Klorida">klorida</a>, <a href="/wiki/Bromida" title="Bromida">bromida</a>, atau <a href="/wiki/Iodida" title="Iodida">iodida</a>) dan kemudian direduksi dalam ruang hampa dengan filamen logam yang dipanaskan secara elektrik:<a href="#cite_note-CRC-21">[21]</a><a href="#cite_note-26">[26]</a> <dl><dd>2 PaI5 → 2 Pa + 5 I2</dd></dl> Pada tahun 1961, <a href="/w/index.php?title=Otoritas_Energi_Atom_Britania_Raya&action=edit&redlink=1" class="new" title="Otoritas Energi Atom Britania Raya (halaman belum tersedia)">Otoritas Energi Atom Britania Raya</a> (UKAEA) memroduksi 127 gram protaktinium-231 murni 99,9% dengan mengolah 60 ton bahan limbah dalam proses 12 tahap, dengan biaya sekitar AS$500.000.<a href="#cite_note-CRC-21">[21]</a><a href="#cite_note-Myasoedov-27">[27]</a> Selama bertahun-tahun, ini adalah satu-satunya pasokan protaktinium yang signifikan di dunia, yang diberikan ke berbagai laboratorium untuk studi ilmiah.<a href="#cite_note-Emsley-9">[9]</a> <a href="/wiki/Laboratorium_Nasional_Oak_Ridge" title="Laboratorium Nasional Oak Ridge">Laboratorium Nasional Oak Ridge</a> di A.S. menyediakan protaktinium dengan biaya sekitar AS$280/gram.<a href="#cite_note-28">[28]</a> <div class="mw-heading mw-heading2"><h2 id="Isotop">Isotop</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=2" title="Sunting bagian: Isotop" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=2" title="Sunting kode sumber bagian: Isotop">sunting sumber</a>]</div> <style data-mw-deduplicate="TemplateStyles:r18844875">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}</style><div role="note" class="hatnote navigation-not-searchable">Artikel utama: <a href="/wiki/Isotop_protaktinium" title="Isotop protaktinium">Isotop protaktinium</a></div> Dua puluh sembilan <a href="/wiki/Radionuklida" title="Radionuklida">radioisotop</a> protaktinium telah ditemukan, yang paling stabil adalah 231Pa dengan <a href="/wiki/Waktu_paruh" title="Waktu paruh">waktu paruh</a> 32.760 tahun, 233Pa dengan waktu paruh 27 hari, dan 230Pa dengan waktu paruh 17,4 hari. Semua isotop yang tersisa memiliki waktu paruh lebih pendek dari 1,6 hari, dan sebagian besar memiliki waktu paruh kurang dari 1,8 detik. Protaktinium juga memiliki dua <a href="/wiki/Isomer_nuklir" title="Isomer nuklir">isomer nuklir</a>, 217mPa (waktu paruh 1,2 milidetik) dan 234mPa (waktu paruh 1,17 menit).<a href="#cite_note-nubase-29">[29]</a> <a href="/wiki/Peluruhan_radioaktif#Mode_peluruhan" title="Peluruhan radioaktif">Mode peluruhan</a> utama untuk isotop yang paling stabil, 231Pa, dan yang lebih ringan (211Pa hingga 231Pa) adalah <a href="/wiki/Peluruhan_alfa" title="Peluruhan alfa">peluruhan alfa</a>, menghasilkan <a href="/wiki/Isotop_aktinium" title="Isotop aktinium">isotop aktinium</a>. Mode utama untuk isotop yang lebih berat (232Pa hingga 239Pa) adalah <a href="/wiki/Peluruhan_beta" title="Peluruhan beta">peluruhan beta</a>, menghasilkan <a href="/wiki/Isotop_uranium" title="Isotop uranium">isotop uranium</a>.<a href="#cite_note-nubase-29">[29]</a> <div class="mw-heading mw-heading3"><h3 id="Fisi_nuklir">Fisi nuklir</h3>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=3" title="Sunting bagian: Fisi nuklir" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=3" title="Sunting kode sumber bagian: Fisi nuklir">sunting sumber</a>]</div> Isotop berumur paling panjang dan paling melimpah, 231Pa, dapat difisi dari <a href="/wiki/Suhu_neutron#Cepat" title="Suhu neutron">neutron cepat</a> melebihi ~1 M<a href="/wiki/Elektronvolt" title="Elektronvolt">eV</a>.<a href="#cite_note-30">[30]</a> 233Pa, isotop lain dari protaktinium yang diproduksi dalam reaktor nuklir, juga memiliki ambang fisi 1 MeV.<a href="#cite_note-31">[31]</a> <div class="mw-heading mw-heading2"><h2 id="Keterjadian">Keterjadian</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=4" title="Sunting bagian: Keterjadian" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=4" title="Sunting kode sumber bagian: Keterjadian">sunting sumber</a>]</div> Protaktinium adalah salah satu unsur alami yang paling langka dan paling mahal. Ia ditemukan dalam bentuk dua isotop – 231Pa dan 234Pa, dengan isotop 234Pa terjadi dalam dua keadaan energi yang berbeda. Hampir semua protaktinium alami adalah protaktinium-231. Ia adalah <a href="/wiki/Partikel_alfa" class="mw-redirect" title="Partikel alfa">pemancar alfa</a> dan dibentuk oleh peluruhan uranium-235, sedangkan protaktinium-234 yang <a href="/wiki/Partikel_beta" class="mw-redirect" title="Partikel beta">memancarkan beta</a> dihasilkan sebagai hasil <a href="/wiki/Berkas:Decay_chain(4n%2B2,_Uranium_series).PNG" title="Berkas:Decay chain(4n+2, Uranium series).PNG">peluruhan uranium-238</a>. Hampir semua uranium-238 (99,8%) meluruh terlebih dahulu menjadi isomer 234mPa yang berumur lebih pendek.<a href="#cite_note-ANL-32">[32]</a> Protaktinium terjadi dalam <a href="/wiki/Uraninit" title="Uraninit">uraninit</a> (pitchblende) pada konsentrasi sekitar 0,3–3 <a href="/wiki/Notasi_bagian_per" title="Notasi bagian per">bagian</a> 231Pa per juta bagian (ppm) bijih.<a href="#cite_note-Emsley-9">[9]</a> Meskipun konten biasa mendekati 0,3 ppm<a href="#cite_note-brit-33">[33]</a> (misalnya di <a href="/w/index.php?title=J%C3%A1chymov&action=edit&redlink=1" class="new" title="Jáchymov (halaman belum tersedia)">Jáchymov</a>, <a href="/wiki/Ceko" title="Ceko">Republik Ceko</a><a href="#cite_note-34">[34]</a>), beberapa bijih dari <a href="/wiki/Republik_Demokratik_Kongo" title="Republik Demokratik Kongo">Republik Demokratik Kongo</a> memiliki sekitar 3 ppm.<a href="#cite_note-CRC-21">[21]</a> Protaktinium tersebar secara homogen di sebagian besar bahan alami dan di air, tetapi pada konsentrasi yang jauh lebih rendah sekitar satu bagian per triliun, yang sesuai dengan radioaktivitasnya sebesar 0,1 pCi/g. Ada sekitar 500 kali lebih banyak protaktinium dalam partikel tanah berpasir daripada dalam air, bahkan air yang ada dalam sampel tanah yang sama. Rasio yang jauh lebih tinggi dari 2.000 ke atas diukur dalam tanah <a href="/wiki/Geluh" title="Geluh">geluh</a> dan lempung, seperti <a href="/wiki/Bentonit" title="Bentonit">bentonit</a>.<a href="#cite_note-ANL-32">[32]</a><a href="#cite_note-35">[35]</a> <div class="mw-heading mw-heading3"><h3 id="Dalam_reaktor_nuklir">Dalam reaktor nuklir</h3>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=5" title="Sunting bagian: Dalam reaktor nuklir" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=5" title="Sunting kode sumber bagian: Dalam reaktor nuklir">sunting sumber</a>]</div> Dua isotop protaktinium utama, 231Pa dan 233Pa, dihasilkan dari torium dalam <a href="/wiki/Reaktor_nuklir" title="Reaktor nuklir">reaktor nuklir</a>; keduanya tidak diinginkan dan biasanya dihilangkan, sehingga menambah kerumitan desain dan operasi reaktor. Secara khusus, 232Th melalui reaksi (n,2n) menghasilkan 231Th yang dengan cepat (waktu paruh 25,5 jam) meluruh menjadi 231Pa. Isotop terakhir, meski bukan limbah transuranik, memiliki waktu paruh yang panjang selama 32.760 tahun dan merupakan kontributor utama <a href="/wiki/Radiasi_pengion#Efek_kesehatan" title="Radiasi pengion">radiotoksisitas</a> jangka panjang dari bahan bakar nuklir bekas.<a href="#cite_note-b1-36">[36]</a> Protaktinium-233 terbentuk setelah <a href="/wiki/Tangkapan_neutron" title="Tangkapan neutron">penangkapan neutron</a> oleh 232Th. Ia selanjutnya meluruh menjadi uranium-233 atau menangkap neutron lain dan mengubahnya menjadi uranium-234 nonfisil.<a href="#cite_note-37">[37]</a> 233Pa memiliki waktu paruh yang relatif panjang yaitu 27 hari dan <a href="/wiki/Penampang_lintang_(fisika)" title="Penampang lintang (fisika)">penampang lintang</a> yang tinggi untuk penangkapan neutron (disebut "<a href="/wiki/Racun_neutron" title="Racun neutron">racun neutron</a>"). Jadi, alih-alih meluruh dengan cepat menjadi 233U yang berguna, sebagian kecil 233Pa yang signifikan diubah menjadi isotop nonfisil dan mengonsumsi neutron, menurunkan <a href="/wiki/Ekonomi_neutron" title="Ekonomi neutron">efisiensi reaktor</a>. Untuk menghindari hal ini, 233Pa diekstraksi dari zona aktif <a href="/wiki/Reaktor_garam_cair" title="Reaktor garam cair">reaktor garam cair</a> torium selama pengoperasiannya, sehingga hanya meluruh menjadi 233U. Hal ini dicapai dengan menggunakan kolom <a href="/wiki/Bismut" title="Bismut">bismut</a> cair setinggi beberapa meter dengan <a href="/wiki/Litium" title="Litium">litium</a> terlarut di dalamnya. Dalam skenario yang disederhanakan, litium secara selektif mereduksi garam protaktinium menjadi logam protaktinium yang kemudian diekstraksi dari siklus garam cair, dan bismut hanyalah pembawa. Ia dipilih karena <a href="/wiki/Titik_lebur" title="Titik lebur">titik leburnya</a> yang rendah (271 °C), tekanan uapnya yang rendah, kelarutannya yang baik untuk litium dan aktinida, dan ia tidak bercampur dengan <a href="/wiki/Halida" title="Halida">halida</a> cair.<a href="#cite_note-b1-36">[36]</a> <div class="mw-heading mw-heading2"><h2 id="Persiapan">Persiapan</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=6" title="Sunting bagian: Persiapan" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=6" title="Sunting kode sumber bagian: Persiapan">sunting sumber</a>]</div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Berkas:Uraninite-39029.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Uraninite-39029.jpg/170px-Uraninite-39029.jpg" decoding="async" width="170" height="268" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Uraninite-39029.jpg/255px-Uraninite-39029.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Uraninite-39029.jpg/340px-Uraninite-39029.jpg 2x" data-file-width="507" data-file-height="799" /></a><figcaption>Protaktinium terjadi pada bijih <a href="/wiki/Uraninit" title="Uraninit">uraninit</a>.</figcaption></figure> Sebelum munculnya <a href="/wiki/Reaktor_nuklir" title="Reaktor nuklir">reaktor nuklir</a>, protaktinium dipisahkan untuk percobaan ilmiah dari bijih uranium. Saat ini, ia sebagian besar diproduksi sebagai produk intermediat <a href="/wiki/Fisi_nuklir" title="Fisi nuklir">fisi nuklir</a> dalam reaktor suhu tinggi torium (waktu yang diberikan adalah waktu paruh): <dl><dd><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {^{232}_{90}Th + ^{1}_{0}n -> ^{233}_{90}Th ->[\beta^-][22,3\ {\ce {mnt}}] ^{233}_{91}Pa ->[\beta^-][26,967\ {\ce {hri}}] ^{233}_{92}U}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mmultiscripts> <mtext>Th</mtext> <none /> <none /> <mprescripts /> <mn>90</mn> <mn>232</mn> </mmultiscripts> <mo>+</mo> <mmultiscripts> <mtext>n</mtext> <none /> <none /> <mprescripts /> <mn>0</mn> <mn>1</mn> </mmultiscripts> <mo stretchy="false">⟶</mo> <mmultiscripts> <mtext>Th</mtext> <none /> <none /> <mprescripts /> <mn>90</mn> <mn>233</mn> </mmultiscripts> <mrow class="MJX-TeXAtom-REL"> <munderover> <mo>→</mo> <mpadded width="+0.611em" lspace="0.278em" voffset="-.24em"> <mn>22</mn> <mo>,</mo> <mn>3</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mtext>mnt</mtext> </mrow> </mpadded> <mpadded width="+0.611em" lspace="0.278em" voffset=".15em"> <msup> <mi>β</mi> <mo>−</mo> </msup> </mpadded> </munderover> </mrow> <mmultiscripts> <mtext>Pa</mtext> <none /> <none /> <mprescripts /> <mn>91</mn> <mn>233</mn> </mmultiscripts> <mrow class="MJX-TeXAtom-REL"> <munderover> <mo>→</mo> <mpadded width="+0.611em" lspace="0.278em" voffset="-.24em"> <mn>26</mn> <mo>,</mo> <mn>967</mn> <mtext> </mtext> <mrow class="MJX-TeXAtom-ORD"> <mtext>hri</mtext> </mrow> </mpadded> <mpadded width="+0.611em" lspace="0.278em" voffset=".15em"> <msup> <mi>β</mi> <mo>−</mo> </msup> </mpadded> </munderover> </mrow> <mmultiscripts> <mtext>U</mtext> <none /> <none /> <mprescripts /> <mn>92</mn> <mn>233</mn> </mmultiscripts> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\ce {^{232}_{90}Th + ^{1}_{0}n -> ^{233}_{90}Th ->[\beta^-][22,3\ {\ce {mnt}}] ^{233}_{91}Pa ->[\beta^-][26,967\ {\ce {hri}}] ^{233}_{92}U}}}</annotation> </semantics> </math><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/aa803524d5e2efa5b710be880c9a2909bc064749" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.112ex; margin-top: -0.415ex; margin-bottom: -0.559ex; width:50.033ex; height:6.509ex;" alt="{\displaystyle {\ce {^{232}_{90}Th + ^{1}_{0}n -> ^{233}_{90}Th ->[\beta^-][22,3\ {\ce {mnt}}] ^{233}_{91}Pa ->[\beta^-][26,967\ {\ce {hri}}] ^{233}_{92}U}}}"></dd></dl> Isotop protaktinium-231 dapat dibuat dengan meradiasi torium-230 dengan <a href="/wiki/Suhu_neutron#Lambat" title="Suhu neutron">neutron lambat</a>, mengubahnya menjadi torium-231 yang mengalami peluruhan beta, atau dengan menyinari torium-232 dengan <a href="/wiki/Suhu_neutron#Cepat" title="Suhu neutron">neutron cepat</a>, menghasilkan torium-231 dan 2 neutron. Logam protaktinium dapat dibuat dengan mereduksi <a href="/wiki/Fluorida" title="Fluorida">fluoridanya</a> dengan <a href="/wiki/Kalsium" title="Kalsium">kalsium</a>,<a href="#cite_note-exp-38">[38]</a> <a href="/wiki/Litium" title="Litium">litium</a> atau <a href="/wiki/Barium" title="Barium">barium</a> pada suhu 1300–1400 °C.<a href="#cite_note-super-39">[39]</a><a href="#cite_note-pao2-40">[40]</a> <div class="mw-heading mw-heading2"><h2 id="Sifat_fisik_dan_kimia">Sifat fisik dan kimia</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=7" title="Sunting bagian: Sifat fisik dan kimia" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=7" title="Sunting kode sumber bagian: Sifat fisik dan kimia">sunting sumber</a>]</div> Protaktinium adalah sebuah <a href="/wiki/Aktinida" title="Aktinida">aktinida</a> yang terletak pada <a href="/wiki/Tabel_periodik" title="Tabel periodik">tabel periodik</a> di sebelah kiri <a href="/wiki/Uranium" title="Uranium">uranium</a> dan di sebelah kanan <a href="/wiki/Torium" title="Torium">torium</a>, dan banyak sifat fisiknya berada di antara kedua aktinida tersebut. Jadi, protaktinium lebih padat dan kaku dari torium tetapi lebih ringan dari uranium, dan <a href="/wiki/Titik_lebur" title="Titik lebur">titik leburnya</a> lebih rendah dari torium dan lebih tinggi dari uranium. <a href="/wiki/Pemuaian" title="Pemuaian">Ekspansi termal</a>, <a href="/wiki/Resistivitas_dan_konduktivitas_listrik" title="Resistivitas dan konduktivitas listrik">konduktivitas listrik</a> dan <a href="/wiki/Konduktivitas_termal" title="Konduktivitas termal">termal</a> dari ketiga unsur ini sebanding dan tipikal <a href="/wiki/Logam_miskin" title="Logam miskin">logam pascatransisi</a>. Perkiraan <a href="/wiki/Modulus_geser" title="Modulus geser">modulus geser</a> protaktinium mirip dengan <a href="/wiki/Titanium" title="Titanium">titanium</a>.<a href="#cite_note-41">[41]</a> Protaktinium adalah logam dengan kilau abu-abu keperakan yang diawetkan untuk beberapa waktu di udara.<a href="#cite_note-CRC-21">[21]</a><a href="#cite_note-Myasoedov-27">[27]</a> Protaktinium mudah bereaksi dengan <a href="/wiki/Oksigen" title="Oksigen">oksigen</a>, uap air, dan asam, tetapi tidak dengan alkali.<a href="#cite_note-Emsley-9">[9]</a> Pada suhu kamar, protaktinium mengkristal dalam struktur <a href="/w/index.php?title=Sistem_kristal_tetragon&action=edit&redlink=1" class="new" title="Sistem kristal tetragon (halaman belum tersedia)">tetragon</a> berpusat-badan yang dapat dianggap sebagai kisi kubus berpusat-badan (bcc) yang terdistorsi; struktur ini tidak berubah pada kompresi hingga 53 GPa. Strukturnya berubah menjadi kubus berpusat-muka (fcc) setelah didinginkan dari suhu tinggi, sekitar 1200 °C.<a href="#cite_note-exp-38">[38]</a><a href="#cite_note-42">[42]</a> Koefisien ekspansi termal fase tetragon antara suhu kamar dan 700 °C adalah 9,9×10−6/°C.<a href="#cite_note-exp-38">[38]</a> Protaktinium bersifat <a href="/wiki/Paramagnetisme" title="Paramagnetisme">paramagnetik</a> dan tidak ada transisi magnetik yang diketahui pada suhu berapa pun.<a href="#cite_note-43">[43]</a> Ia menjadi <a href="/wiki/Superkonduktivitas" title="Superkonduktivitas">superkonduktif</a> pada suhu di bawah 1,4 K.<a href="#cite_note-Emsley-9">[9]</a><a href="#cite_note-super-39">[39]</a> Protaktinium tetraklorida bersifat paramagnetik pada suhu kamar tetapi berubah menjadi <a href="/wiki/Feromagnetisme" title="Feromagnetisme">feromagnetik</a> saat didinginkan hingga 182 K.<a href="#cite_note-44">[44]</a> Protaktinium eksis dalam dua <a href="/wiki/Bilangan_oksidasi" title="Bilangan oksidasi">keadaan oksidasi</a> utama, +4 dan +5, baik dalam padatan maupun larutan, dan keadaan +3 dan +2 diamati dalam beberapa fase padat. Karena konfigurasi elektron atom netral protaktinium adalah [Rn]5f26d17s2, keadaan oksidasi +5 sesuai dengan konfigurasi 5f0 berenergi rendah (dan dengan demikian disukai). Keadaan +4 dan +5 dengan mudah membentuk <a href="/wiki/Hidroksida" title="Hidroksida">hidroksida</a> dalam air dengan ion utamanya adalah Pa(OH)3+, Pa(OH)2+2, Pa(OH)+3, dan Pa(OH)4, semuanya nirwarna.<a href="#cite_note-g1265-45">[45]</a> Ion protaktinium lain yang dikenal meliputi PaCl2+2, PaSO2+4, PaF3+, PaF2+2, PaF−6, PaF2−7, dan PaF3−8.<a href="#cite_note-g1275-46">[46]</a><a href="#cite_note-trif-47">[47]</a> <div class="mw-heading mw-heading2"><h2 id="Senyawa_kimia">Senyawa kimia</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=8" title="Sunting bagian: Senyawa kimia" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=8" title="Sunting kode sumber bagian: Senyawa kimia">sunting sumber</a>]</div> <table class="wikitable" style="text-align: center"> <tbody><tr> <th>Rumus </th> <th>warma </th> <th>simetri </th> <th><a href="/wiki/Grup_ruang" title="Grup ruang">grup ruang</a> </th> <th>No </th> <th><a href="/wiki/Simbol_Pearson" title="Simbol Pearson">lambang Pearson</a> </th> <th>a (pm) </th> <th>b (pm) </th> <th>c (pm) </th> <th>Z </th> <th>densitas (g/cm3) </th></tr> <tr> <td>Pa </td> <td>abu-abu keperakan </td> <td><a href="/w/index.php?title=Sistem_kristal_tetragon&action=edit&redlink=1" class="new" title="Sistem kristal tetragon (halaman belum tersedia)">tetragon</a><a href="#cite_note-str-2">[2]</a> </td> <td>I4/mmm </td> <td>139 </td> <td>tI2 </td> <td>392,5 </td> <td>392,5 </td> <td>323,8 </td> <td>2 </td> <td>15,37 </td></tr> <tr> <td>PaO </td> <td> </td> <td>garam-batu<a href="#cite_note-pao2-40">[40]</a> </td> <td>Fm3m </td> <td>225 </td> <td>cF8 </td> <td>496,1 </td> <td> </td> <td> </td> <td>4 </td> <td>13,44 </td></tr> <tr> <td><a href="/wiki/Protaktinium(IV)_oksida" title="Protaktinium(IV) oksida">PaO2</a> </td> <td>hitam </td> <td>fcc<a href="#cite_note-pao2-40">[40]</a> </td> <td>Fm3m </td> <td>225 </td> <td>cF12 </td> <td>550,5 </td> <td> </td> <td> </td> <td>4 </td> <td>10,47 </td></tr> <tr> <td><a href="/wiki/Protaktinium(V)_oksida" title="Protaktinium(V) oksida">Pa2O5</a> </td> <td>putih </td> <td> </td> <td>Fm3m<a href="#cite_note-pao2-40">[40]</a> </td> <td>225 </td> <td>cF16 </td> <td>547,6 </td> <td>547,6 </td> <td>547,6 </td> <td>4 </td> <td>10,96 </td></tr> <tr> <td>Pa2O5 </td> <td>putih </td> <td>ortorombus<a href="#cite_note-pao2-40">[40]</a> </td> <td> </td> <td> </td> <td> </td> <td>692 </td> <td>402 </td> <td>418 </td> <td> </td> <td> </td></tr> <tr> <td>PaH3 </td> <td>hitam </td> <td>kubus<a href="#cite_note-pao2-40">[40]</a> </td> <td>Pm3n </td> <td>223 </td> <td>cP32 </td> <td>664,8 </td> <td>664,8 </td> <td>664,8 </td> <td>8 </td> <td>10,58 </td></tr> <tr> <td>PaF4 </td> <td>coklat kemerahan </td> <td><a href="/wiki/Sistem_kristal_monoklinik" title="Sistem kristal monoklinik">monoklinik</a><a href="#cite_note-pao2-40">[40]</a> </td> <td>C2/c </td> <td>15 </td> <td>mS60 </td> <td> </td> <td> </td> <td> </td> <td>2 </td> <td> </td></tr> <tr> <td>PaCl4 </td> <td>hijau kekuningan </td> <td>tetragon<a href="#cite_note-48">[48]</a> </td> <td>I41/amd </td> <td>141 </td> <td>tI20 </td> <td>837,7 </td> <td>837,7 </td> <td>748,1 </td> <td>4 </td> <td>4,72 </td></tr> <tr> <td>PaBr4 </td> <td>coklat </td> <td>tetragon<a href="#cite_note-pabr4-49">[49]</a><a href="#cite_note-pabr5b-50">[50]</a> </td> <td>I41/amd </td> <td>141 </td> <td>tI20 </td> <td>882,4 </td> <td>882,4 </td> <td>795,7 </td> <td> </td> <td> </td></tr> <tr> <td><a href="/wiki/Protaktinium(V)_klorida" title="Protaktinium(V) klorida">PaCl5</a> </td> <td>kuning </td> <td>monoklinik<a href="#cite_note-pacl5-51">[51]</a> </td> <td>C2/c </td> <td>15 </td> <td>mS24 </td> <td>797 </td> <td>1135 </td> <td>836 </td> <td>4 </td> <td>3,74 </td></tr> <tr> <td>PaBr5 </td> <td>merah </td> <td>monoklinik<a href="#cite_note-pabr5b-50">[50]</a><a href="#cite_note-pabr5-52">[52]</a> </td> <td>P21/c </td> <td>14 </td> <td>mP24 </td> <td>838,5 </td> <td>1120,5 </td> <td>1214,6 </td> <td>4 </td> <td>4,98 </td></tr> <tr> <td>PaOBr3 </td> <td> </td> <td>monoklinik<a href="#cite_note-pabr5b-50">[50]</a> </td> <td>C2 </td> <td> </td> <td> </td> <td>1691,1 </td> <td>387,1 </td> <td>933,4 </td> <td> </td> <td> </td></tr> <tr> <td>Pa(PO3)4 </td> <td> </td> <td>ortorombus<a href="#cite_note-papo3-53">[53]</a> </td> <td> </td> <td> </td> <td> </td> <td>696,9 </td> <td>895,9 </td> <td>1500,9 </td> <td> </td> <td> </td></tr> <tr> <td>Pa2P2O7 </td> <td> </td> <td>kubus<a href="#cite_note-papo3-53">[53]</a> </td> <td>Pa3 </td> <td> </td> <td> </td> <td>865 </td> <td>865 </td> <td>865 </td> <td> </td> <td> </td></tr> <tr> <td>Pa(C8H8)2 </td> <td>kuning keemasan </td> <td>monoklinik<a href="#cite_note-cene-54">[54]</a> </td> <td> </td> <td> </td> <td> </td> <td>709 </td> <td>875 </td> <td>1062 </td> <td> </td> <td> </td></tr></tbody></table> Di sini a, b dan c adalah konstanta kisi dalam pikometer, No adalah nomor grup ruang dan Z adalah jumlah <a href="/wiki/Unit_formula" title="Unit formula">unit formula</a> per <a href="/wiki/Sel_unit" title="Sel unit">sel unit</a>; fcc adalah singkatan dari simetri <a href="/wiki/Sistem_kristal_kubik" title="Sistem kristal kubik">kubus berpusat-muka</a> (face-centered cubic). Densitas tidak diukur secara langsung tetapi dihitung dari parameter kisi. <div class="mw-heading mw-heading3"><h3 id="Oksida_dan_garam_yang_mengandung_oksigen">Oksida dan garam yang mengandung oksigen</h3>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=9" title="Sunting bagian: Oksida dan garam yang mengandung oksigen" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=9" title="Sunting kode sumber bagian: Oksida dan garam yang mengandung oksigen">sunting sumber</a>]</div> Oksida protaktinium dikenal dengan keadaan oksidasi logam +2, +4 dan +5. Yang paling stabil adalah pentoksida putih <a href="/wiki/Protaktinium(V)_oksida" title="Protaktinium(V) oksida">Pa2O5</a>, yang dapat diproduksi dengan menyalakan protaktinium(V) hidroksida di udara pada suhu 500 °C.<a href="#cite_note-g1268-55">[55]</a> Struktur kristalnya berbentuk kubus, dan komposisi kimianya seringkali nonstoikiometrik, digambarkan sebagai PaO2.25. Fase lain dari oksida ini dengan simetri ortorombus juga telah dilaporkan.<a href="#cite_note-pao2-40">[40]</a><a href="#cite_note-pacl4b-56">[56]</a> Dioksida hitam <a href="/wiki/Protaktinium(IV)_oksida" title="Protaktinium(IV) oksida">PaO2</a> diperoleh dari pentoksida dengan mereduksinya pada suhu 1550 °C dengan hidrogen. Ia tidak mudah larut dalam <a href="/wiki/Asam_klorida" title="Asam klorida">asam klorida</a>, <a href="/wiki/Asam_sulfat" title="Asam sulfat">sulfat</a>, atau <a href="/wiki/Asam_nitrat" title="Asam nitrat">nitrat</a> encer atau pekat, tetapi mudah larut dalam <a href="/wiki/Asam_fluorida" title="Asam fluorida">asam fluorida</a>.<a href="#cite_note-pao2-40">[40]</a> Dioksida ini dapat diubah kembali menjadi pentoksida dengan memanaskan dalam atmosfer yang mengandung oksigen hingga suhu 1100 °C.<a href="#cite_note-pacl4b-56">[56]</a> Monoksida PaO hanya teramati sebagai lapisan tipis pada logam protaktinium, tetapi tidak dalam bentuk curah yang terisolasi.<a href="#cite_note-pao2-40">[40]</a> Protaktinium membentuk oksida biner campuran dengan berbagai logam. Dengan logam alkali A, kristalnya memiliki rumus kimia APaO3 dan <a href="/w/index.php?title=Perovskit_(struktur)&action=edit&redlink=1" class="new" title="Perovskit (struktur) (halaman belum tersedia)">struktur perovskit</a>, atau A3PaO4 dan struktur garam-batu terdistorsi, atau A7PaO6 di mana atom oksigen membentuk kisi heksagon padat. Dalam semua bahan ini, ion protaktinium terkoordinasi secara oktahedron.<a href="#cite_note-g1269-57">[57]</a><a href="#cite_note-58">[58]</a> Pentoksida Pa2O5 bergabung dengan oksida logam tanah jarang R2O3 untuk membentuk berbagai oksida campuran nonstoikiometrik, juga berstruktur perovskit.<a href="#cite_note-59">[59]</a> Oksida protaktinium bersifat <a href="/w/index.php?title=Oksida_basa&action=edit&redlink=1" class="new" title="Oksida basa (halaman belum tersedia)">basa</a>; mereka dengan mudah diubah menjadi hidroksida dan dapat membentuk berbagai garam, seperti <a href="/wiki/Sulfat" title="Sulfat">sulfat</a>, <a href="/wiki/Fosfat" class="mw-redirect" title="Fosfat">fosfat</a>, <a href="/wiki/Nitrat" title="Nitrat">nitrat</a>, dll. Garam nitrat biasanya berwarna putih tetapi dapat menjadi coklat karena dekomposisi <a href="/w/index.php?title=Radiolisis&action=edit&redlink=1" class="new" title="Radiolisis (halaman belum tersedia)">radiolitis</a>. Pemanasan nitrat di udara pada suhu 400 °C mengubahnya menjadi protaktinium pentoksida putih.<a href="#cite_note-target-60">[60]</a> Politrioksofosfat Pa(PO3)4 dapat diproduksi dengan mereaksikan difluorida sulfat PaF2SO4 dengan <a href="/wiki/Asam_fosfat" title="Asam fosfat">asam fosfat</a> (H3PO4) di bawah atmosfer gas lengai. Memanaskan produk hingga sekitar 900 °C menghilangkan produk sampingan reaksi seperti <a href="/wiki/Asam_fluorida" title="Asam fluorida">asam fluorida</a>, <a href="/wiki/Belerang_trioksida" title="Belerang trioksida">belerang trioksida</a>, dan fosfat anhidrida. Memanaskannya ke suhu yang lebih tinggi dalam atmosfer lengai akan mengurai Pa(PO3)4 menjadi difosfat PaP2O7, yang analog dengan difosfat aktinida lainnya. Dalam difosfat, gugus PO3 membentuk piramida simetri C2v. Memanaskan PaP2O7 di udara hingga suhu 1400 °C akan menguraikannya menjadi pentoksida fosforus dan protaktinium.<a href="#cite_note-papo3-53">[53]</a> <div class="mw-heading mw-heading3"><h3 id="Halida">Halida</h3>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=10" title="Sunting bagian: Halida" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=10" title="Sunting kode sumber bagian: Halida">sunting sumber</a>]</div> Protaktinium (V) fluorida membentuk kristal putih di mana ion protaktinium tersusun dalam bipiramida pentagon dan <a href="/wiki/Bilangan_koordinasi" title="Bilangan koordinasi">dikoordinasikan</a> oleh 7 ion lainnya. Koordinasinya sama pada protaktinium(V) klorida, tetapi warnanya kuning. Koordinasinya berubah menjadi oktahedron pada protaktinium(V) bromida berwarna coklat dan tidak diketahui pada protaktinium(V) iodida. Koordinasi protaktinium pada semua tetrahalidanya adalah 8, tetapi susunannya antiprismatik persegi pada protaktinium(IV) fluorida dan dodekahedron pada protaktinium(IV) klorida dan bromida. Protaktinium(III) iodida berwarna coklat telah dilaporkan di mana ion protaktinium berkoordinasi 8 dalam susunan prismatik trigonal tertutup ganda.<a href="#cite_note-g1270-61">[61]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Berkas:PaCl5.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/PaCl5.svg/220px-PaCl5.svg.png" decoding="async" width="220" height="79" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/PaCl5.svg/330px-PaCl5.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dd/PaCl5.svg/440px-PaCl5.svg.png 2x" data-file-width="635" data-file-height="227" /></a><figcaption>Koordinasi atom protaktinium (lingkaran hitam) dan atom halogen (lingkaran putih) dalam protaktinium(V) fluorida atau klorida.</figcaption></figure> Protaktinium(V) fluorida dan protaktinium(V) klorida memiliki struktur polimer dengan simetri monoklinik. Di sana, dalam satu rantai polimer, semua atom halida terletak pada satu bidang seperti grafit dan membentuk pentagon planar di sekitar ion protaktinium. Koordinasi 7 protaktinium berasal dari 5 atom halida dan dua ikatan atom protaktinium milik rantai terdekat. Senyawa ini mudah terhidrolisis dalam air.<a href="#cite_note-g1271-62">[62]</a> Protaktinium pentaklorida melebur pada suhu 300 °C dan menyublim pada suhu yang lebih rendah lagi. Protaktinium(V) fluorida dapat dibuat dengan mereaksikan protaktinium oksida dengan <a href="/w/index.php?title=Bromin_pentafluorida&action=edit&redlink=1" class="new" title="Bromin pentafluorida (halaman belum tersedia)">bromin pentafluorida</a> atau <a href="/w/index.php?title=Bromin_trifluorida&action=edit&redlink=1" class="new" title="Bromin trifluorida (halaman belum tersedia)">bromin trifluorida</a> pada suhu sekitar 600 °C, dan protaktinium(IV) fluorida diperoleh dari protaktinium oksida dan campuran hidrogen dan <a href="/wiki/Hidrogen_fluorida" title="Hidrogen fluorida">hidrogen fluorida</a> pada suhu 600 °C; surplus besar hidrogen diperlukan untuk menghilangkan kebocoran oksigen atmosfer ke dalam reaksi.<a href="#cite_note-pao2-40">[40]</a> Protaktinium(V) klorida dibuat dengan mereaksikan protaktinium oksida dengan <a href="/wiki/Karbon_tetraklorida" title="Karbon tetraklorida">karbon tetraklorida</a> pada suhu 200–300 °C.<a href="#cite_note-pao2-40">[40]</a> Produk sampingan (seperti PaOCl3) dihilangkan dengan sublimasi fraksional.<a href="#cite_note-pacl5-51">[51]</a> Reduksi protaktinium(V) klorida dengan hidrogen pada suhu sekitar 800 °C akan menghasilkan protaktinium(IV) klorida – sebuah padatan kuning kehijauan yang menyublim dalam ruang hampa pada suhu 400 °C; ia juga dapat diperoleh langsung dari protaktinium dioksida dengan mengolahnya dengan karbon tetraklorida pada suhu 400 °C.<a href="#cite_note-pao2-40">[40]</a> Protaktinium bromida diproduksi oleh aksi <a href="/w/index.php?title=Aluminium_bromida&action=edit&redlink=1" class="new" title="Aluminium bromida (halaman belum tersedia)">aluminium bromida</a>, <a href="/wiki/Hidrogen_bromida" title="Hidrogen bromida">hidrogen bromida</a>, <a href="/w/index.php?title=Karbon_tetrabromida&action=edit&redlink=1" class="new" title="Karbon tetrabromida (halaman belum tersedia)">karbon tetrabromida</a>, atau campuran hidrogen bromida dan <a href="/w/index.php?title=Tionil_bromida&action=edit&redlink=1" class="new" title="Tionil bromida (halaman belum tersedia)">tionil bromida</a> pada protaktinium oksida. Reaksi alternatif adalah antara protaktinium pentaklorida dan hidrogen bromida atau tionil bromida.<a href="#cite_note-pao2-40">[40]</a> Protaktinium(V) bromida memiliki dua bentuk monoklinik yang serupa, satu diperoleh dengan sublimasi pada suhu 400–410 °C dan yang lainnya dengan sublimasi pada suhu yang sedikit lebih rendah pada suhu 390–400 °C.<a href="#cite_note-pabr5b-50">[50]</a><a href="#cite_note-pabr5-52">[52]</a> Protaktinium iodida dihasilkan dari protaktinium oksida dan <a href="/w/index.php?title=Aluminium_iodida&action=edit&redlink=1" class="new" title="Aluminium iodida (halaman belum tersedia)">aluminium iodida</a> atau <a href="/w/index.php?title=Amonium_iodida&action=edit&redlink=1" class="new" title="Amonium iodida (halaman belum tersedia)">amonium iodida</a> yang dipanaskan hingga suhu 600 °C.<a href="#cite_note-pao2-40">[40]</a> Protaktinium(III) iodida diperoleh dengan memanaskan protaktinium(V) iodida dalam ruang hampa.<a href="#cite_note-g1271-62">[62]</a> Seperti oksida, protaktinium membentuk halida campuran dengan logam alkali. Di antaranya, yang paling tidak biasa adalah Na3PaF8 di mana ion protaktinium secara simetris dikelilingi oleh 8 ion F− yang membentuk kubus hampir sempurna.<a href="#cite_note-g1275-46">[46]</a> Protaktinium fluorida yang lebih kompleks juga telah dikenal seperti Pa2F9<a href="#cite_note-g1271-62">[62]</a> dan fluorida terner dari jenis MPaF6 (M = Li, Na, K, Rb, Cs, atau NH4), M2PaF7 (M = K, Rb, Cs, atau NH4) dan M3PaF8 (M = Li, Na, Rb, Cs), semuanya berupa padatan kristal putih. Rumus MPaF6 dapat direpresentasikan sebagai kombinasi dari MF dan PaF5. Senyawa ini dapat diperoleh dengan menguapkan larutan asam fluorida yang mengandung kedua kompleks ini. Untuk kation alkali yang kecil seperti Na, struktur kristalnya adalah tetragon, sedangkan kation yang lebih besar, K+, Rb+, Cs+, atau NH4+, menjadi ortorfombik. Variasi serupa diamati untuk fluorida M2PaF7, yaitu simetri kristalnya bergantung pada kation dan dibedakan untuk Cs2PaF7 dan M2PaF7 (M = K, Rb, atau NH4).<a href="#cite_note-trif-47">[47]</a> <div class="mw-heading mw-heading3"><h3 id="Senyawa_anorganik_lainnya">Senyawa anorganik lainnya</h3>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=11" title="Sunting bagian: Senyawa anorganik lainnya" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=11" title="Sunting kode sumber bagian: Senyawa anorganik lainnya">sunting sumber</a>]</div> Oksihalida dan oksisulfida dari protaktinium telah diketahui. PaOBr3 memiliki struktur monoklinik yang terdiri dari unit rantai ganda dimana protaktinium memiliki koordinasi 7 dan tersusun menjadi bipiramida pentagon. Rantai ini saling berhubungan melalui atom oksigen dan bromin, dan setiap atom oksigen ditautkan dengan tiga atom protaktinium.<a href="#cite_note-pabr5b-50">[50]</a> PaOS adalah padatan nonvolatil berwarna kuning muda dengan kisi kristal kubik isostruktural dengan oksisulfida aktinida lainnya. Ia diperoleh dengan mereaksikan protaktinium(V) klorida dengan campuran <a href="/wiki/Hidrogen_sulfida" title="Hidrogen sulfida">hidrogen sulfida</a> dan <a href="/wiki/Karbon_disulfida" title="Karbon disulfida">karbon disulfida</a> pada suhu 900 °C.<a href="#cite_note-pao2-40">[40]</a> Dalam hidrida dan nitrida, protaktinium memiliki keadaan oksidasi rendah, sekitar +3. Hidridanya diperoleh dengan aksi langsung hidrogen pada logam protaktinium pada suhu 250 °C, dan nitridanya adalah produk amonia dan protaktinium tetraklorida atau pentaklorida. Padatan kuning cerah ini stabil terhadap pemanasan hingga suhu 800 °C dalam ruang hampa. Protaktinium karbida, PaC, dibentuk dengan mereduksi protaktinium tetraklorida dengan barium dalam wadah karbon pada suhu sekitar 1400 °C.<a href="#cite_note-pao2-40">[40]</a> Protaktinium membentuk <a href="/wiki/Borohidrida" title="Borohidrida">borohidrida</a> yang meliputi Pa(BH4)4. Ia memiliki struktur polimer yang tidak biasa dengan rantai heliks di mana atom protaktinium memiliki bilangan koordinasi 12 dan dikelilingi oleh enam ion BH4−.<a href="#cite_note-g1277-63">[63]</a> <div class="mw-heading mw-heading3"><h3 id="Senyawa_organologam">Senyawa organologam</h3>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=12" title="Sunting bagian: Senyawa organologam" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=12" title="Sunting kode sumber bagian: Senyawa organologam">sunting sumber</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Berkas:Uranocene-3D-balls.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Uranocene-3D-balls.png/170px-Uranocene-3D-balls.png" decoding="async" width="170" height="210" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Uranocene-3D-balls.png/255px-Uranocene-3D-balls.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Uranocene-3D-balls.png/340px-Uranocene-3D-balls.png 2x" data-file-width="891" data-file-height="1100" /></a><figcaption>Struktur molekul protaktinosena (Pa(C8H8)2) yang diusulkan</figcaption></figure> Protaktinium(IV) dapat membentuk kompleks tetrahedral tetrakis(siklopentadienil)protaktinium(IV) (atau Pa(C5H5)4) dengan empat cincin <a href="/wiki/Kompleks_siklopentadienil" title="Kompleks siklopentadienil">siklopentadienil</a>, yang dapat disintesis dengan mereaksikan protaktinium(IV) klorida dengan leburan Be(C5H5)2. Satu cincin dapat diganti dengan sebuah atom halida.<a href="#cite_note-g1278-64">[64]</a> Kompleks organologam lainnya adalah protaktinium bis(π-siklooktatetraena), atau protaktinosena, Pa(C8H8)2, yang strukturnya analog dengan <a href="/wiki/Uranosena" title="Uranosena">uranosena</a>. Di sana, atom logam protaktinium terjepit di antara dua ligan <a href="/w/index.php?title=Siklooktatetraena&action=edit&redlink=1" class="new" title="Siklooktatetraena (halaman belum tersedia)">siklooktatetraena</a>. Mirip dengan uranosena, ia dapat dibuat dengan mereaksikan protaktinium tetraklorida dengan dikalium <a href="/w/index.php?title=Siklooktatetraena&action=edit&redlink=1" class="new" title="Siklooktatetraena (halaman belum tersedia)">siklooktatetraenida</a>, K2C8H8, dalam <a href="/wiki/Tetrahidrofuran" title="Tetrahidrofuran">tetrahidrofuran</a>.<a href="#cite_note-cene-54">[54]</a> <div class="mw-heading mw-heading2"><h2 id="Aplikasi">Aplikasi</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=13" title="Sunting bagian: Aplikasi" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=13" title="Sunting kode sumber bagian: Aplikasi">sunting sumber</a>]</div> Meskipun protaktinium terletak pada tabel periodik di antara uranium dan torium, yang keduanya memiliki banyak aplikasi, saat ini protaktinium tidak digunakan di luar penelitian ilmiah karena kelangkaannya, radioaktivitasnya yang tinggi, dan toksisitasnya yang tinggi.<a href="#cite_note-ANL-32">[32]</a> Protaktinium-231 muncul dari peluruhan uranium-235 alami, dan dalam reaktor nuklir melalui reaksi 232Th + n → 231Th + 2n dan <a href="/wiki/Peluruhan_beta" title="Peluruhan beta">peluruhan beta</a> selanjutnya. Ia pernah dianggap dapat mendukung reaksi berantai nuklir, yang pada prinsipnya dapat digunakan untuk membuat <a href="/wiki/Senjata_nuklir" title="Senjata nuklir">senjata nuklir</a>: <a href="/wiki/Fisikawan" title="Fisikawan">fisikawan</a> <a href="/w/index.php?title=Walter_Seifritz&action=edit&redlink=1" class="new" title="Walter Seifritz (halaman belum tersedia)">Walter Seifritz</a> [<a href="https://de.wikipedia.org/wiki/Walter_Seifritz" class="extiw" title="de:Walter Seifritz">de</a>] pernah memperkirakan <a href="/wiki/Massa_kritis" title="Massa kritis">massa kritis</a> terkait sebesar 750±180 kg.<a href="#cite_note-65">[65]</a> Namun, kemungkinan kekritisan 231Pa telah dikesampingkan sejak saat itu.<a href="#cite_note-66">[66]</a> Dengan munculnya <a href="/wiki/Spektrometri_massa" title="Spektrometri massa">spektrometer massa</a> yang sangat sensitif, aplikasi 231Pa sebagai pelacak dalam <a href="/wiki/Geologi" title="Geologi">geologi</a> dan <a href="/w/index.php?title=Paleoseanografi&action=edit&redlink=1" class="new" title="Paleoseanografi (halaman belum tersedia)">paleoseanografi</a> menjadi mungkin. Jadi, rasio protaktinium-231 terhadap torium-230 digunakan untuk <a href="/wiki/Penanggalan_radiometrik" title="Penanggalan radiometrik">penanggalan radiometrik</a> sedimen yang berusia hingga 175.000 tahun dan dalam pemodelan pembentukan mineral.<a href="#cite_note-brit-33">[33]</a> Secara khusus, evaluasinya dalam sedimen samudra memungkinkan untuk merekonstruksi pergerakan badan air <a href="/wiki/Samudra_Atlantik#Atlantik_Utara" title="Samudra Atlantik">Atlantik Utara</a> selama pencairan terakhir dari <a href="/wiki/Gletser" title="Gletser">gletser</a> <a href="/wiki/Zaman_es" title="Zaman es">Zaman Es</a>.<a href="#cite_note-67">[67]</a> Beberapa variasi penanggalan terkait protaktinium bergantung pada analisis konsentrasi relatif untuk beberapa anggota rantai peluruhan uranium yang berumur panjang – uranium, protaktinium, dan torium, misalnya. Unsur-unsur ini memiliki 6, 5, dan 4 elektron valensi dan dengan demikian mendukung keadaan oksidasi +6, +5 dan +4, masing-masing, dan menunjukkan sifat fisik dan kimia yang berbeda. Jadi, torium dan protaktinium, tetapi bukan senyawa uranium, tidak larut dengan baik dalam larutan berair, dan mempresipitasi menjadi sedimen; laju presipitasi torium lebih cepat daripada protaktinium. Selain itu, analisis konsentrasi untuk protaktinium-231 (waktu paruh 32.760 tahun) dan torium-230 (waktu paruh 75.380 tahun) memungkinkan untuk meningkatkan akurasi dibandingkan ketika hanya satu isotop yang diukur; metode isotop ganda ini juga kurang peka terhadap ketidakhomogenan dalam distribusi spasial isotop dan variasi laju presipitasinya.<a href="#cite_note-brit-33">[33]</a><a href="#cite_note-68">[68]</a> <div class="mw-heading mw-heading2"><h2 id="Pencegahan">Pencegahan</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=14" title="Sunting bagian: Pencegahan" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=14" title="Sunting kode sumber bagian: Pencegahan">sunting sumber</a>]</div> Protaktinium bersifat racun dan sangat radioaktif dan dengan demikian semua manipulasi dilakukan dalam <a href="/w/index.php?title=Kotak_sarung_tangan&action=edit&redlink=1" class="new" title="Kotak sarung tangan (halaman belum tersedia)">kotak sarung tangan</a> yang tertutup rapat. Isotop utamanya, 231Pa, memiliki <a href="/w/index.php?title=Aktivitas_spesifik&action=edit&redlink=1" class="new" title="Aktivitas spesifik (halaman belum tersedia)">aktivitas spesifik</a> sebesar 0.048 <a href="/w/index.php?title=Curie&action=edit&redlink=1" class="new" title="Curie (halaman belum tersedia)">curie</a> (1.800 <a href="/wiki/Becquerel" title="Becquerel">GBq</a>) per gram dan utamanya memancarkan partikel alfa dengan energi 5 MeV, yang dapat dihentikan oleh lapisan tipis bahan apa pun. Namun, ia perlahan meluruh, dengan waktu paruh 32.760 tahun, menjadi 227Ac, yang memiliki aktivitas spesifik sebesar 74 curie (2.700 GBq) per gram, memancarkan radiasi alfa dan beta, dan memiliki waktu paruh yang jauh lebih pendek, yaitu 22 tahun. 227Ac, pada gilirannya, meluruh menjadi isotop yang lebih ringan dengan waktu paruh yang lebih pendek dan aktivitas spesifik (SA) yang jauh lebih besar, seperti yang dirangkum dalam tabel di bawah yang menunjukkan rantai peluruhan protaktinium-231.<a href="#cite_note-ANL-32">[32]</a> <table class="wikitable" style="text-align:center"> <tbody><tr> <th>Isotop </th> <td>231Pa</td> <td>227Ac</td> <td>227Th</td> <td>223Ra</td> <td>219Rn</td> <td>215Po</td> <td>211Pb</td> <td>211Bi</td> <td>207Tl </td></tr> <tr> <th>SA (<a href="/wiki/Curie_(satuan)" title="Curie (satuan)">Ci</a>/g) </th> <td>0,048</td> <td>73</td> <td>3,1×104</td> <td>5,2×104</td> <td>1,3×1010</td> <td>3×1013</td> <td>2,5×107</td> <td>4,2×108</td> <td>1,9×108 </td></tr> <tr> <th>Peluruhan </th> <td>α</td> <td>α, β</td> <td>α</td> <td>α</td> <td>α</td> <td>α</td> <td>β</td> <td>α, β</td> <td>β </td></tr> <tr> <th><a href="/wiki/Waktu_paruh" title="Waktu paruh">Waktu paruh</a> </th> <td>33 <a href="/wiki/Kilo-" title="Kilo-">k</a><a href="/wiki/Tahun" title="Tahun">a</a></td> <td>22 a</td> <td>19 hari</td> <td>11 hari</td> <td>4 dtk</td> <td>1,8 <a href="/wiki/Mili-" title="Mili-">mdtk</a></td> <td>36 mnt</td> <td>2,1 mnt</td> <td>4,8 mnt </td></tr></tbody></table> Karena protaktinium hadir dalam jumlah kecil di sebagian besar produk dan bahan alami, ia dapat tertelan dengan makanan atau air dan terhirup dengan udara. Hanya sekitar 0,05% protaktinium yang tertelan diserap ke dalam darah dan sisanya diekskresikan. Dari darah, sekitar 40% protaktinium tersimpan di tulang, sekitar 15% masuk ke hati, 2% ke ginjal, dan sisanya keluar dari tubuh. <a href="/wiki/Waktu_paruh_biologis" title="Waktu paruh biologis">Waktu paruh biologis</a> protaktinium adalah sekitar 50 tahun di tulang, sedangkan di organ lain kinetika memiliki komponen cepat dan lambat. Misalnya, 70% protaktinium di hati memiliki waktu paruh biologis 10 hari, dan 30% sisanya selama 60 hari. Nilai yang sesuai untuk ginjal adalah 20% (10 hari) dan 80% (60 hari). Di semua organ ini, protaktinium dapat mengakibatkan kanker melalui radioaktivitasnya.<a href="#cite_note-ANL-32">[32]</a><a href="#cite_note-target-60">[60]</a> Dosis maksimum Pa yang aman dalam tubuh manusia adalah 003 μCi (110 kBq), yang setara dengan 0,5 mikrogram 231Pa.<a href="#cite_note-69">[69]</a> Konsentrasi maksimum 231Pa yang diperbolehkan di udara di Jerman adalah 3×10−4 Bq/m3.<a href="#cite_note-target-60">[60]</a> <div class="mw-heading mw-heading2"><h2 id="Lihat_pula">Lihat pula</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=15" title="Sunting bagian: Lihat pula" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=15" title="Sunting kode sumber bagian: Lihat pula">sunting sumber</a>]</div> <ul><li><a href="/w/index.php?title=Ada_Hitchins&action=edit&redlink=1" class="new" title="Ada Hitchins (halaman belum tersedia)">Ada Hitchins</a>, yang membantu Soddy menemukan protaktinium</li></ul> <div class="mw-heading mw-heading2"><h2 id="Referensi">Referensi</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=16" title="Sunting bagian: Referensi" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=16" title="Sunting kode sumber bagian: Referensi">sunting sumber</a>]</div> <style data-mw-deduplicate="TemplateStyles:r18833634">.mw-parser-output .reflist{font-size:90%;margin-bottom:0.5em;list-style-type:decimal}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 35em;"> <ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> (Indonesia) <cite class="citation web"><a rel="nofollow" class="external text" href="https://kbbi.kemdikbud.go.id/entri/protaktinium">"Protaktinium"</a>. 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Oxford, Inggris, UK: Oxford University Press. hlm. <a rel="nofollow" class="external text" href="https://archive.org/details/naturesbuildingb0000emsl/page/347">347–349</a>. <a href="/wiki/International_Standard_Book_Number" class="mw-redirect" title="International Standard Book Number">ISBN</a> <a href="/wiki/Istimewa:Sumber_buku/978-0-19-850340-8" title="Istimewa:Sumber buku/978-0-19-850340-8">978-0-19-850340-8</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Protactinium&rft.btitle=Nature%27s+Building+Blocks%3A+An+A-Z+Guide+to+the+Elements&rft.place=Oxford%2C+Inggris%2C+UK&rft.pages=347-349&rft.pub=Oxford+University+Press&rft.date=2003&rft.isbn=978-0-19-850340-8&rft.aulast=Emsley&rft.aufirst=John&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dj-Xu07p3cKwC%26pg%3DPA348&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  </li> <li id="cite_note-10"><a href="#cite_ref-10">^</a> <cite class="citation journal">Laing, Michael (2005). 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"Decay of UX1, UX2, and UZ". <a href="/wiki/Physical_Review" title="Physical Review">Physical Review</a>. 96 (4): 1075–1080. <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1954PhRv...96.1075J">1954PhRv...96.1075J</a>. <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1103%2FPhysRev.96.1075">10.1103/PhysRev.96.1075</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Physical+Review&rft.atitle=Decay+of+UX1%2C+UX2%2C+and+UZ&rft.volume=96&rft.issue=4&rft.pages=1075-1080&rft.date=1954&rft_id=info%3Adoi%2F10.1103%2FPhysRev.96.1075&rft_id=info%3Abibcode%2F1954PhRv...96.1075J&rft.aulast=Johansson&rft.aufirst=Sven&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  </li> <li id="cite_note-g1250-15"><a href="#cite_ref-g1250_15-0">^</a> <a href="#Greenwood">Greenwood</a>, hlm. 1250 </li> <li id="cite_note-g1254-16"><a href="#cite_ref-g1254_16-0">^</a> <a href="#Greenwood">Greenwood</a>, hlm. 1254 </li> <li id="cite_note-17"><a href="#cite_ref-17">^</a> <cite class="citation journal">Fajans, K.; Gohring, O. (1913). <a rel="nofollow" class="external text" href="http://www.digizeitschriften.de/no_cache/home/jkdigitools/loader/?tx_jkDigiTools_pi1%5BIDDOC%5D=201162&tx_jkDigiTools_pi1%5Bpp%5D=425">"Über die komplexe Natur des Ur X"</a>. <a href="/w/index.php?title=Naturwissenschaften&action=edit&redlink=1" class="new" title="Naturwissenschaften (halaman belum tersedia)">Naturwissenschaften</a>. 1 (14): 339. <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1913NW......1..339F">1913NW......1..339F</a>. <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2FBF01495360">10.1007/BF01495360</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Naturwissenschaften&rft.atitle=%C3%9Cber+die+komplexe+Natur+des+Ur+X&rft.volume=1&rft.issue=14&rft.pages=339&rft.date=1913&rft_id=info%3Adoi%2F10.1007%2FBF01495360&rft_id=info%3Abibcode%2F1913NW......1..339F&rft.au=Fajans%2C+K.&rft.au=Gohring%2C+O.&rft_id=http%3A%2F%2Fwww.digizeitschriften.de%2Fno_cache%2Fhome%2Fjkdigitools%2Floader%2F%3Ftx_jkDigiTools_pi1%255BIDDOC%255D%3D201162%26tx_jkDigiTools_pi1%255Bpp%255D%3D425&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  Parameter <code style="color:inherit; border:inherit; padding:inherit;">|name-list-style=</code> yang tidak diketahui akan diabaikan (<a href="/wiki/Bantuan:Galat_CS1#parameter_ignored" title="Bantuan:Galat CS1">bantuan</a>); Parameter <code style="color:inherit; border:inherit; padding:inherit;">|s2cid=</code> yang tidak diketahui akan diabaikan (<a href="/wiki/Bantuan:Galat_CS1#parameter_ignored" title="Bantuan:Galat CS1">bantuan</a>) </li> <li id="cite_note-18"><a href="#cite_ref-18">^</a> <cite class="citation journal">Fajans, K.; Gohring, O. 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(1918) The parent of actinium</a>. Proceedings of the Royal Society A – Mathematical, Physical and Engineering Sciences 94: 384-403. </li> <li id="cite_note-CRC-21">^ <a href="#cite_ref-CRC_21-0">a</a> <a href="#cite_ref-CRC_21-1">b</a> <a href="#cite_ref-CRC_21-2">c</a> <a href="#cite_ref-CRC_21-3">d</a> <a href="#cite_ref-CRC_21-4">e</a> <cite class="citation book">Hammond, C. R. 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CRC press. <a href="/wiki/International_Standard_Book_Number" class="mw-redirect" title="International Standard Book Number">ISBN</a> <a href="/wiki/Istimewa:Sumber_buku/978-0-8493-0485-9" title="Istimewa:Sumber buku/978-0-8493-0485-9">978-0-8493-0485-9</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Elements%2C+in+Handbook+of+Chemistry+and+Physics&rft.edition=81&rft.pub=CRC+press&rft.date=2004-06-29&rft.isbn=978-0-8493-0485-9&rft.au=Hammond%2C+C.+R.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fcrchandbookofche81lide&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  </li> <li id="cite_note-g1251-22"><a href="#cite_ref-g1251_22-0">^</a> <a href="#Greenwood">Greenwood</a>, hlm. 1251 </li> <li id="cite_note-23"><a href="#cite_ref-23">^</a> Shea, William R. 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Dordrecht, Belanda: Springer. <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2011tcot.book.....M">2011tcot.book.....M</a>. <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2F978-94-007-0211-0">10.1007/978-94-007-0211-0</a>. <a href="/wiki/International_Standard_Book_Number" class="mw-redirect" title="International Standard Book Number">ISBN</a> <a href="/wiki/Istimewa:Sumber_buku/978-1-4020-3555-5" title="Istimewa:Sumber buku/978-1-4020-3555-5">978-1-4020-3555-5</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Chapter+4%3A+Protactinium&rft.btitle=The+Chemistry+of+the+Actinide+and+Transactinide+Elements&rft.place=Dordrecht%2C+Belanda&rft.edition=3&rft.pub=Springer&rft.date=2006&rft_id=info%3Adoi%2F10.1007%2F978-94-007-0211-0&rft_id=info%3Abibcode%2F2011tcot.book.....M&rft.isbn=978-1-4020-3555-5&rft.aulast=Myasoedov&rft.aufirst=B.+F.&rft.au=Kirby%2C+H.+W.&rft.au=Tananaev%2C+I.+G.&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  Parameter <code style="color:inherit; border:inherit; padding:inherit;">|s2cid=</code> yang tidak diketahui akan diabaikan (<a href="/wiki/Bantuan:Galat_CS1#parameter_ignored" title="Bantuan:Galat CS1">bantuan</a>) </li> <li id="cite_note-28"><a href="#cite_ref-28">^</a> <cite class="citation web"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20110928025549/http://periodic.lanl.gov/91.shtml">"Periodic Table of Elements: Protactinium"</a>. <a href="/wiki/Laboratorium_Nasional_Los_Alamos" title="Laboratorium Nasional Los Alamos">Laboratorium Nasional Los Alamos</a>. Diarsipkan dari <a rel="nofollow" class="external text" href="https://periodic.lanl.gov/91.shtml">versi asli</a> tanggal 28 September 2011. Diakses tanggal 11 Juni 2023.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Periodic+Table+of+Elements%3A+Protactinium&rft.pub=Laboratorium+Nasional+Los+Alamos&rft_id=https%3A%2F%2Fperiodic.lanl.gov%2F91.shtml&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  Parameter <code style="color:inherit; border:inherit; padding:inherit;">|url-status=</code> yang tidak diketahui akan diabaikan (<a href="/wiki/Bantuan:Galat_CS1#parameter_ignored" title="Bantuan:Galat CS1">bantuan</a>) </li> <li id="cite_note-nubase-29">^ <a href="#cite_ref-nubase_29-0">a</a> <a href="#cite_ref-nubase_29-1">b</a> <cite id="CITEREFAudiBersillonBlachotWapstra2003" class="citation">Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), <a rel="nofollow" class="external text" href="https://hal.archives-ouvertes.fr/in2p3-00020241/document">"The NUBASE evaluation of nuclear and decay properties"</a>, Nuclear Physics A, 729: 3–128, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2003NuPhA.729....3A">2003NuPhA.729....3A</a>, <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.nuclphysa.2003.11.001">10.1016/j.nuclphysa.2003.11.001</a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nuclear+Physics+A&rft.atitle=The+N%3Csmall%3EUBASE%3C%2Fsmall%3E+evaluation+of+nuclear+and+decay+properties&rft.volume=729&rft.pages=3-128&rft.date=2003&rft_id=info%3Adoi%2F10.1016%2Fj.nuclphysa.2003.11.001&rft_id=info%3Abibcode%2F2003NuPhA.729....3A&rft.aulast=Audi&rft.aufirst=Georges&rft.au=Bersillon%2C+Olivier&rft.au=Blachot%2C+Jean&rft.au=Wapstra%2C+Aaldert+Hendrik&rft_id=https%3A%2F%2Fhal.archives-ouvertes.fr%2Fin2p3-00020241%2Fdocument&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  </li> <li id="cite_note-30"><a href="#cite_ref-30">^</a> <cite class="citation journal">Grosse, A. v.; Booth, E. T.; Dunning, J. R. (15 August 1939). <a rel="nofollow" class="external text" href="https://journals.aps.org/pr/pdf/10.1103/PhysRev.56.382">"The Fission of Protactinium (Element 91)"</a>. Physical Review. 56 (4): 382. <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1939PhRv...56..382G">1939PhRv...56..382G</a>. <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1103%2FPhysRev.56.382">10.1103/PhysRev.56.382</a>. Diakses tanggal 11 Juni 2023.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Physical+Review&rft.atitle=The+Fission+of+Protactinium+%28Element+91%29&rft.volume=56&rft.issue=4&rft.pages=382&rft.date=1939-08-15&rft_id=info%3Adoi%2F10.1103%2FPhysRev.56.382&rft_id=info%3Abibcode%2F1939PhRv...56..382G&rft.aulast=Grosse&rft.aufirst=A.+v.&rft.au=Booth%2C+E.+T.&rft.au=Dunning%2C+J.+R.&rft_id=https%3A%2F%2Fjournals.aps.org%2Fpr%2Fpdf%2F10.1103%2FPhysRev.56.382&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  </li> <li id="cite_note-31"><a href="#cite_ref-31">^</a> <cite class="citation journal">Tovesson, F.; Hambsch, F.-J; Oberstedt, A.; Fogelberg, B.; Ramström, E.; Oberstedt, S. (Agustus 2002). <a rel="nofollow" class="external text" href="https://www.tandfonline.com/doi/pdf/10.1080/00223131.2002.10875076">"The Pa-233 Fission Cross Section"</a>. 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Diakses tanggal 11 Juni 2023.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Nuclear+Science+and+Technology&rft.atitle=The+Pa-233+Fission+Cross+Section&rft.volume=39&rft.issue=sup2&rft.pages=210-213&rft.date=2002-08&rft_id=info%3Adoi%2F10.1080%2F00223131.2002.10875076&rft_id=info%3Abibcode%2F2002JNST...39Q.210T&rft.aulast=Tovesson&rft.aufirst=F.&rft.au=Hambsch%2C+F.-J&rft.au=Oberstedt%2C+A.&rft.au=Fogelberg%2C+B.&rft.au=Ramstr%C3%B6m%2C+E.&rft.au=Oberstedt%2C+S.&rft_id=https%3A%2F%2Fwww.tandfonline.com%2Fdoi%2Fpdf%2F10.1080%2F00223131.2002.10875076&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  Parameter <code style="color:inherit; border:inherit; padding:inherit;">|s2cid=</code> yang tidak diketahui akan diabaikan (<a href="/wiki/Bantuan:Galat_CS1#parameter_ignored" title="Bantuan:Galat CS1">bantuan</a>) </li> <li id="cite_note-ANL-32">^ <a href="#cite_ref-ANL_32-0">a</a> <a href="#cite_ref-ANL_32-1">b</a> <a href="#cite_ref-ANL_32-2">c</a> <a href="#cite_ref-ANL_32-3">d</a> <a href="#cite_ref-ANL_32-4">e</a> <a rel="nofollow" class="external text" href="http://www.ead.anl.gov/pub/doc/protactinium.pdf">Protaktinium</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080307023843/http://www.ead.anl.gov/pub/doc/protactinium.pdf">Diarsipkan</a> 7 Maret 2008 di <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>., Laboratorium Nasional Argonne, Human Health Fact Sheet, Agustus 2005 </li> <li id="cite_note-brit-33">^ <a href="#cite_ref-brit_33-0">a</a> <a href="#cite_ref-brit_33-1">b</a> <a href="#cite_ref-brit_33-2">c</a> Articles "Protactinium" and "Protactinium-231 – thorium-230 dating" in Encyclopædia Britannica, edisi ke-15, 1995, hlm. 737 </li> <li id="cite_note-34"><a href="#cite_ref-34">^</a> <cite class="citation journal">Grosse, A. V.; Agruss, M. S. (1934). "The Isolation of 0.1 Gram of the Oxide of Element 91 (Protactinium)". <a href="/wiki/Journal_of_the_American_Chemical_Society" title="Journal of the American Chemical Society">Journal of the American Chemical Society</a>. 56 (10): 2200. <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1021%2Fja01325a507">10.1021/ja01325a507</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+the+American+Chemical+Society&rft.atitle=The+Isolation+of+0.1+Gram+of+the+Oxide+of+Element+91+%28Protactinium%29&rft.volume=56&rft.issue=10&rft.pages=2200&rft.date=1934&rft_id=info%3Adoi%2F10.1021%2Fja01325a507&rft.aulast=Grosse&rft.aufirst=A.+V.&rft.au=Agruss%2C+M.+S.&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  </li> <li id="cite_note-35"><a href="#cite_ref-35">^</a> Cornelis, Rita (2005) <a rel="nofollow" class="external text" href="https://books.google.com/books?id=1PmjurlE6KkC&pg=PA520">Handbook of elemental speciation II: species in the environment, food, medicine & occupational health, Vol. 2</a>, John Wiley and Sons, hlm. 520–521, <a href="/wiki/International_Standard_Book_Number" class="mw-redirect" title="International Standard Book Number">ISBN</a> <a href="/wiki/Istimewa:Sumber_buku/0-470-85598-3" title="Istimewa:Sumber buku/0-470-85598-3">0-470-85598-3</a>. </li> <li id="cite_note-b1-36">^ <a href="#cite_ref-b1_36-0">a</a> <a href="#cite_ref-b1_36-1">b</a> Groult, Henri (2005) <a rel="nofollow" class="external text" href="https://books.google.com/books?id=dR2DA50PUV4C&pg=PA562">Fluorinated materials for energy conversion</a>, Elsevier, hlm. 562–565, <a href="/wiki/International_Standard_Book_Number" class="mw-redirect" title="International Standard Book Number">ISBN</a> <a href="/wiki/Istimewa:Sumber_buku/0-08-044472-5" title="Istimewa:Sumber buku/0-08-044472-5">0-08-044472-5</a>. </li> <li id="cite_note-37"><a href="#cite_ref-37">^</a> <cite class="citation book">Hébert, Alain (July 2009). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=sibA5ECQ8LoC&pg=PA265">Applied Reactor Physics</a>. 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Diakses tanggal 12 Juni 2023.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Current+Science&rft.atitle=A+Re-calculation+of+Criticality+Property+of+%3Csup%3E231%3C%2Fsup%3EPa+Using+New+Nuclear+Data&rft.volume=77&rft.issue=5&rft.pages=667-677&rft.date=1999&rft.au=Ganesan%2C+S.&rft_id=http%3A%2F%2Fwww.iisc.ernet.in%2Fcurrsci%2Fsept10%2Fresearcharticle.pdf&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  Parameter <code style="color:inherit; border:inherit; padding:inherit;">|url-status=</code> yang tidak diketahui akan diabaikan (<a href="/wiki/Bantuan:Galat_CS1#parameter_ignored" title="Bantuan:Galat CS1">bantuan</a>) </li> <li id="cite_note-67"><a href="#cite_ref-67">^</a> <cite class="citation journal">McManus, J. F.; Francois, R.; Gherardi, J.-M.; Keigwin, L. D.; et al. (2004). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130410051109/http://www.seas.harvard.edu/climate/pdf/mcmanus-2004.pdf">"Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes"</a> (PDF). <a href="/wiki/Nature" title="Nature">Nature</a>. 428 (6985): 834–837. <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2004Natur.428..834M">2004Natur.428..834M</a>. <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1038%2Fnature02494">10.1038/nature02494</a>. <a href="/wiki/PubMed_Identifier" class="mw-redirect" title="PubMed Identifier">PMID</a> <a rel="nofollow" class="external text" href="//www.ncbi.nlm.nih.gov/pubmed/15103371">15103371</a>. Diarsipkan dari <a rel="nofollow" class="external text" href="http://www.seas.harvard.edu/climate/pdf/mcmanus-2004.pdf">versi asli</a> (PDF) tanggal 10 April 2013. Diakses tanggal 12 Juni 2023.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nature&rft.atitle=Collapse+and+rapid+resumption+of+Atlantic+meridional+circulation+linked+to+deglacial+climate+changes&rft.volume=428&rft.issue=6985&rft.pages=834-837&rft.date=2004&rft_id=info%3Apmid%2F15103371&rft_id=info%3Adoi%2F10.1038%2Fnature02494&rft_id=info%3Abibcode%2F2004Natur.428..834M&rft.au=McManus%2C+J.+F.&rft.au=Francois%2C+R.&rft.au=Gherardi%2C+J.-M.&rft.au=Keigwin%2C+L.+D.&rft.au=Brown-Leger%2C+S.&rft_id=http%3A%2F%2Fwww.seas.harvard.edu%2Fclimate%2Fpdf%2Fmcmanus-2004.pdf&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  Parameter <code style="color:inherit; border:inherit; padding:inherit;">|url-status=</code> yang tidak diketahui akan diabaikan (<a href="/wiki/Bantuan:Galat_CS1#parameter_ignored" title="Bantuan:Galat CS1">bantuan</a>); Parameter <code style="color:inherit; border:inherit; padding:inherit;">|name-list-style=</code> yang tidak diketahui akan diabaikan (<a href="/wiki/Bantuan:Galat_CS1#parameter_ignored" title="Bantuan:Galat CS1">bantuan</a>); Parameter <code style="color:inherit; border:inherit; padding:inherit;">|s2cid=</code> yang tidak diketahui akan diabaikan (<a href="/wiki/Bantuan:Galat_CS1#parameter_ignored" title="Bantuan:Galat CS1">bantuan</a>) </li> <li id="cite_note-68"><a href="#cite_ref-68">^</a> <cite class="citation journal">Cheng, H.; Edwards, R.Lawrence; Murrell, M. T.; Benjamin, T. M. (1998). "Uranium-thorium-protactinium dating systematics". <a href="/w/index.php?title=Geochimica_et_Cosmochimica_Acta&action=edit&redlink=1" class="new" title="Geochimica et Cosmochimica Acta (halaman belum tersedia)">Geochimica et Cosmochimica Acta</a>. 62 (21–22): 3437. <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1998GeCoA..62.3437C">1998GeCoA..62.3437C</a>. <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FS0016-7037%2898%2900255-5">10.1016/S0016-7037(98)00255-5</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Uranium-thorium-protactinium+dating+systematics&rft.volume=62&rft.issue=21%E2%80%9322&rft.pages=3437&rft.date=1998&rft_id=info%3Adoi%2F10.1016%2FS0016-7037%2898%2900255-5&rft_id=info%3Abibcode%2F1998GeCoA..62.3437C&rft.aulast=Cheng&rft.aufirst=H.&rft.au=Edwards%2C+R.Lawrence&rft.au=Murrell%2C+M.+T.&rft.au=Benjamin%2C+T.+M.&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  </li> <li id="cite_note-69"><a href="#cite_ref-69">^</a> <cite class="citation book">Palshin, E.S.; et al. (1968). Analytical chemistry of protactinium. Moscow: Nauka.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Analytical+chemistry+of+protactinium&rft.place=Moscow&rft.pub=Nauka&rft.date=1968&rft.au=Palshin%2C+E.S.&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988">  </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Bibliografi">Bibliografi</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=17" title="Sunting bagian: Bibliografi" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=17" title="Sunting kode sumber bagian: Bibliografi">sunting sumber</a>]</div> <ul><li><cite id="Greenwood" class="citation book"><a href="/wiki/Norman_Greenwood" title="Norman Greenwood">Greenwood, Norman N.</a>; Earnshaw, Alan (1997). Chemistry of the Elements (edisi ke-2). <a href="/wiki/Butterworth-Heinemann" title="Butterworth-Heinemann">Butterworth–Heinemann</a>. <a href="/wiki/International_Standard_Book_Number" class="mw-redirect" title="International Standard Book Number">ISBN</a> <a href="/wiki/Istimewa:Sumber_buku/978-0080379418" title="Istimewa:Sumber buku/978-0080379418">978-0080379418</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Chemistry+of+the+Elements&rft.edition=2&rft.pub=Butterworth%E2%80%93Heinemann&rft.date=1997&rft.isbn=978-0080379418&rft.aulast=Greenwood&rft.aufirst=Norman+N.&rft.au=Earnshaw%2C+Alan&rfr_id=info%3Asid%2Fid.wikipedia.org%3AProtaktinium" class="Z3988"> </li></ul> <div class="mw-heading mw-heading2"><h2 id="Pranala_luar">Pranala luar</h2>[<a href="/w/index.php?title=Protaktinium&veaction=edit&section=18" title="Sunting bagian: Pranala luar" class="mw-editsection-visualeditor">sunting</a> | <a href="/w/index.php?title=Protaktinium&action=edit&section=18" title="Sunting kode sumber bagian: Pranala luar">sunting sumber</a>]</div> <style data-mw-deduplicate="TemplateStyles:r23035139">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:#f9f9f9}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><div class="side-box side-box-right plainlinks sistersitebox"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r23782729"> <div class="side-box-flex"> <div class="side-box-image"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></div> <div class="side-box-text plainlist">Wikimedia Commons memiliki media mengenai <a href="https://commons.wikimedia.org/wiki/Protactinium" class="extiw" title="commons:Protactinium">Protactinium</a>.</div></div> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r23035139"><div class="side-box side-box-right plainlinks sistersitebox"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r23782729"> <div class="side-box-flex"> <div class="side-box-image"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Wiktionary-logo-en.svg/37px-Wiktionary-logo-en.svg.png" decoding="async" width="37" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Wiktionary-logo-en.svg/55px-Wiktionary-logo-en.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Wiktionary-logo-en.svg/73px-Wiktionary-logo-en.svg.png 2x" data-file-width="1000" data-file-height="1089" /></div> <div class="side-box-text plainlist">Lihat entri <a href="https://en.wiktionary.org/wiki/protaktinium" class="extiw" title="wiktionary:protaktinium">protaktinium</a> di kamus bebas Wiktionary.</div></div> </div> <ul><li>(Inggris) <a rel="nofollow" class="external text" href="http://www.periodicvideos.com/videos/091.htm">Protaktinium</a> di <a href="/wiki/The_Periodic_Table_of_Videos" title="The Periodic Table of Videos">The Periodic Table of Videos</a> (Universitas Nottingham)</li></ul> <table class="navbox collapsible uncollapsed" cellpadding="0" style="table-layout:fixed; width:100%;"> <tbody><tr> <th colspan="33" style="padding:0 1em;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r18590415"><div class="navbar plainlinks hlist navbar-collapse navbar-mini"><ul><li class="nv-lihat"><a href="/wiki/Templat:Tabel_periodik_unsur_kimia" title="Templat:Tabel periodik unsur kimia"><abbr title="Lihat templat ini">l</abbr></a></li><li class="nv-bicara"><a href="/wiki/Pembicaraan_Templat:Tabel_periodik_unsur_kimia" title="Pembicaraan Templat:Tabel periodik unsur kimia"><abbr title="Diskusikan templat ini">b</abbr></a></li><li class="nv-sunting"><a class="external text" href="https://id.wikipedia.org/w/index.php?title=Templat:Tabel_periodik_unsur_kimia&action=edit"><abbr title="Sunting templat ini">s</abbr></a></li></ul></div><div class="navbar-ct-mini"><a href="/wiki/Tabel_periodik" title="Tabel periodik">Tabel periodik</a></div> <a href="/wiki/Tabel_periodik_(sel_besar)" title="Tabel periodik (sel besar)">(besar)</a> </th></tr> <tr> <td style="line-height:100%;"> </td> <td><a href="/wiki/Logam_alkali" title="Logam alkali">1</a> </td> <td><a href="/wiki/Logam_alkali_tanah" title="Logam alkali tanah">2</a> </td> <td colspan="14"> </td> <td><a href="/wiki/Unsur_golongan_3" title="Unsur golongan 3">3</a> </td> <td><a href="/wiki/Unsur_golongan_4" title="Unsur golongan 4">4</a> </td> <td><a href="/wiki/Unsur_golongan_5" title="Unsur golongan 5">5</a> </td> <td><a href="/wiki/Unsur_golongan_6" title="Unsur golongan 6">6</a> </td> <td><a href="/wiki/Unsur_golongan_7" title="Unsur golongan 7">7</a> </td> <td><a href="/wiki/Unsur_golongan_8" title="Unsur golongan 8">8</a> </td> <td><a href="/wiki/Unsur_golongan_9" title="Unsur golongan 9">9</a> </td> <td><a href="/wiki/Unsur_golongan_10" title="Unsur golongan 10">10</a> </td> <td><a href="/wiki/Unsur_golongan_11" title="Unsur golongan 11">11</a> </td> <td><a href="/wiki/Unsur_golongan_12" title="Unsur golongan 12">12</a> </td> <td><a href="/wiki/Golongan_boron" title="Golongan boron">13</a> </td> <td><a href="/wiki/Golongan_karbon" title="Golongan karbon">14</a> </td> <td><a href="/wiki/Pniktogen" title="Pniktogen">15</a> </td> <td><a href="/wiki/Kalkogen" title="Kalkogen">16</a> </td> <td><a href="/wiki/Halogen" title="Halogen">17</a> </td> <td><a href="/wiki/Gas_mulia" title="Gas mulia">18</a> </td></tr> <tr> <td><a href="/wiki/Unsur_periode_1" title="Unsur periode 1">1</a> </td> <td title="Hidrogen, 1 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Hidrogen" title="Hidrogen">H</a> </td> <td colspan="30"> </td> <td title="Helium, 2 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Helium" title="Helium">He</a> </td></tr> <tr> <td><a href="/wiki/Unsur_periode_2" title="Unsur periode 2">2</a> </td> <td title="Litium, 3 (alkali metal)" style="text-align:center; background:#ff6666; border:none; ;"><a href="/wiki/Litium" title="Litium">Li</a> </td> <td title="Berilium, 4 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Berilium" title="Berilium">Be</a> </td> <td colspan="24"> </td> <td title="Boron, 5 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Boron" title="Boron">B</a> </td> <td title="Karbon, 6 (polyatomic nonmetal)" style="text-align:center; background:#a1ffc3; border:none; ;"><a href="/wiki/Karbon" title="Karbon">C</a> </td> <td title="Nitrogen, 7 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Nitrogen" title="Nitrogen">N</a> </td> <td title="Oksigen, 8 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Oksigen" title="Oksigen">O</a> </td> <td title="Fluorin, 9 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Fluorin" title="Fluorin">F</a> </td> <td title="Neon, 10 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Neon" title="Neon">Ne</a> </td></tr> <tr> <td><a href="/wiki/Unsur_periode_3" title="Unsur periode 3">3</a> </td> <td title="Natrium, 11 (alkali metal)" style="text-align:center; background:#ff6666; border:none; ;"><a href="/wiki/Natrium" title="Natrium">Na</a> </td> <td title="Magnesium, 12 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Magnesium" title="Magnesium">Mg</a> </td> <td colspan="24"> </td> <td title="Aluminium, 13 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Aluminium" title="Aluminium">Al</a> </td> <td title="Silikon, 14 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Silikon" title="Silikon">Si</a> </td> <td title="Fosforus, 15 (polyatomic nonmetal)" style="text-align:center; background:#a1ffc3; border:none; ;"><a href="/wiki/Fosforus" title="Fosforus">P</a> </td> <td title="Belerang, 16 (polyatomic nonmetal)" style="text-align:center; background:#a1ffc3; border:none; ;"><a href="/wiki/Belerang" title="Belerang">S</a> </td> <td title="Klorin, 17 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Klorin" title="Klorin">Cl</a> </td> <td title="Argon, 18 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Argon" title="Argon">Ar</a> </td></tr> <tr> <td><a href="/wiki/Unsur_periode_4" title="Unsur periode 4">4</a> </td> <td title="Kalium, 19 (alkali metal)" style="text-align:center; background:#ff6666; border:none; ;"><a href="/wiki/Kalium" title="Kalium">K</a> </td> <td title="Kalsium, 20 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Kalsium" title="Kalsium">Ca</a> </td> <td colspan="14"> </td> <td title="Skandium, 21 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Skandium" title="Skandium">Sc</a> </td> <td title="Titanium, 22 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Titanium" title="Titanium">Ti</a> </td> <td title="Vanadium, 23 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Vanadium" title="Vanadium">V</a> </td> <td title="Kromium, 24 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Kromium" title="Kromium">Cr</a> </td> <td title="Mangan, 25 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Mangan" title="Mangan">Mn</a> </td> <td title="Besi, 26 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Besi" title="Besi">Fe</a> </td> <td title="Kobalt, 27 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Kobalt" title="Kobalt">Co</a> </td> <td title="Nikel, 28 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Nikel" title="Nikel">Ni</a> </td> <td title="Tembaga, 29 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Tembaga" title="Tembaga">Cu</a> </td> <td title="Seng, 30 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Seng" title="Seng">Zn</a> </td> <td title="Galium, 31 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Galium" title="Galium">Ga</a> </td> <td title="Germanium, 32 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Germanium" title="Germanium">Ge</a> </td> <td title="Arsen, 33 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Arsen" title="Arsen">As</a> </td> <td title="Selenium, 34 (polyatomic nonmetal)" style="text-align:center; background:#a1ffc3; border:none; ;"><a href="/wiki/Selenium" title="Selenium">Se</a> </td> <td title="Bromin, 35 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Bromin" title="Bromin">Br</a> </td> <td title="Kripton, 36 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Kripton" title="Kripton">Kr</a> </td></tr> <tr> <td><a href="/wiki/Unsur_periode_5" title="Unsur periode 5">5</a> </td> <td title="Rubidium, 37 (alkali metal)" style="text-align:center; background:#ff6666; border:none; ;"><a href="/wiki/Rubidium" title="Rubidium">Rb</a> </td> <td title="Stronsium, 38 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Stronsium" title="Stronsium">Sr</a> </td> <td colspan="14"> </td> <td title="Itrium, 39 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Itrium" title="Itrium">Y</a> </td> <td title="Zirkonium, 40 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Zirkonium" title="Zirkonium">Zr</a> </td> <td title="Niobium, 41 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Niobium" title="Niobium">Nb</a> </td> <td title="Molibdenum, 42 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Molibdenum" title="Molibdenum">Mo</a> </td> <td title="Teknesium, 43 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Teknesium" title="Teknesium">Tc</a> </td> <td title="Rutenium, 44 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Rutenium" title="Rutenium">Ru</a> </td> <td title="Rodium, 45 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Rodium" title="Rodium">Rh</a> </td> <td title="Paladium, 46 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Paladium" title="Paladium">Pd</a> </td> <td title="Perak, 47 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Perak" title="Perak">Ag</a> </td> <td title="Kadmium, 48 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Kadmium" title="Kadmium">Cd</a> </td> <td title="Indium, 49 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Indium" title="Indium">In</a> </td> <td title="Timah, 50 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Timah" title="Timah">Sn</a> </td> <td title="Antimon, 51 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Antimon" title="Antimon">Sb</a> </td> <td title="Telurium, 52 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Telurium" title="Telurium">Te</a> </td> <td title="Iodin, 53 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Iodin" title="Iodin">I</a> </td> <td title="Xenon, 54 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Xenon" title="Xenon">Xe</a> </td></tr> <tr> <td><a href="/wiki/Unsur_periode_6" title="Unsur periode 6">6</a> </td> <td title="Sesium, 55 (alkali metal)" style="text-align:center; background:#ff6666; border:none; ;"><a href="/wiki/Sesium" title="Sesium">Cs</a> </td> <td title="Barium, 56 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Barium" title="Barium">Ba</a> </td> <td title="Lantanum, 57 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Lantanum" title="Lantanum">La</a> </td> <td title="Serium, 58 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Serium" title="Serium">Ce</a> </td> <td title="Praseodimium, 59 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Praseodimium" title="Praseodimium">Pr</a> </td> <td title="Neodimium, 60 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Neodimium" title="Neodimium">Nd</a> </td> <td title="Prometium, 61 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Prometium" title="Prometium">Pm</a> </td> <td title="Samarium, 62 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Samarium" title="Samarium">Sm</a> </td> <td title="Europium, 63 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Europium" title="Europium">Eu</a> </td> <td title="Gadolinium, 64 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> </td> <td title="Terbium, 65 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Terbium" title="Terbium">Tb</a> </td> <td title="Disprosium, 66 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Disprosium" title="Disprosium">Dy</a> </td> <td title="Holmium, 67 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Holmium" title="Holmium">Ho</a> </td> <td title="Erbium, 68 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Erbium" title="Erbium">Er</a> </td> <td title="Tulium, 69 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Tulium" title="Tulium">Tm</a> </td> <td title="Iterbium, 70 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Iterbium" title="Iterbium">Yb</a> </td> <td title="Lutesium, 71 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Lutesium" title="Lutesium">Lu</a> </td> <td title="Hafnium, 72 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Hafnium" title="Hafnium">Hf</a> </td> <td title="Tantalum, 73 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Tantalum" title="Tantalum">Ta</a> </td> <td title="Wolfram, 74 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Wolfram" title="Wolfram">W</a> </td> <td title="Renium, 75 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Renium" title="Renium">Re</a> </td> <td title="Osmium, 76 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Osmium" title="Osmium">Os</a> </td> <td title="Iridium, 77 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Iridium" title="Iridium">Ir</a> </td> <td title="Platina, 78 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Platina" title="Platina">Pt</a> </td> <td title="Emas, 79 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Emas" title="Emas">Au</a> </td> <td title="Raksa, 80 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Raksa" title="Raksa">Hg</a> </td> <td title="Talium, 81 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Talium" title="Talium">Tl</a> </td> <td title="Timbal, 82 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Timbal" title="Timbal">Pb</a> </td> <td title="Bismut, 83 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Bismut" title="Bismut">Bi</a> </td> <td title="Polonium, 84 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Polonium" title="Polonium">Po</a> </td> <td title="Astatin, 85 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Astatin" title="Astatin">At</a> </td> <td title="Radon, 86 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Radon" title="Radon">Rn</a> </td></tr> <tr> <td><a href="/wiki/Unsur_periode_7" title="Unsur periode 7">7</a> </td> <td title="Fransium, 87 (alkali metal)" style="text-align:center; background:#ff6666; border:none; ;"><a href="/wiki/Fransium" title="Fransium">Fr</a> </td> <td title="Radium, 88 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Radium" title="Radium">Ra</a> </td> <td title="Aktinium, 89 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Aktinium" title="Aktinium">Ac</a> </td> <td title="Torium, 90 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Torium" title="Torium">Th</a> </td> <td title="Protaktinium, 91 (actinide)" style="text-align:center; background:#ff99cc; border:1px solid black; ;"><a class="mw-selflink selflink">Pa</a> </td> <td title="Uranium, 92 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Uranium" title="Uranium">U</a> </td> <td title="Neptunium, 93 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Neptunium" title="Neptunium">Np</a> </td> <td title="Plutonium, 94 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Plutonium" title="Plutonium">Pu</a> </td> <td title="Amerisium, 95 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Amerisium" title="Amerisium">Am</a> </td> <td title="Kurium, 96 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Kurium" title="Kurium">Cm</a> </td> <td title="Berkelium, 97 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Berkelium" title="Berkelium">Bk</a> </td> <td title="Kalifornium, 98 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Kalifornium" title="Kalifornium">Cf</a> </td> <td title="Einsteinium, 99 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Einsteinium" title="Einsteinium">Es</a> </td> <td title="Fermium, 100 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Fermium" title="Fermium">Fm</a> </td> <td title="Mendelevium, 101 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Mendelevium" title="Mendelevium">Md</a> </td> <td title="Nobelium, 102 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Nobelium" title="Nobelium">No</a> </td> <td title="Lawrensium, 103 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Lawrensium" title="Lawrensium">Lr</a> </td> <td title="Ruterfordium, 104 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Ruterfordium" title="Ruterfordium">Rf</a> </td> <td title="Dubnium, 105 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Dubnium" title="Dubnium">Db</a> </td> <td title="Seaborgium, 106 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Seaborgium" title="Seaborgium">Sg</a> </td> <td title="Bohrium, 107 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Bohrium" title="Bohrium">Bh</a> </td> <td title="Hasium, 108 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Hasium" title="Hasium">Hs</a> </td> <td title="Meitnerium, 109 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Meitnerium" title="Meitnerium">Mt</a> </td> <td title="Darmstadtium, 110 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Darmstadtium" title="Darmstadtium">Ds</a> </td> <td title="Roentgenium, 111 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Roentgenium" title="Roentgenium">Rg</a> </td> <td title="Kopernisium, 112 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Kopernisium" title="Kopernisium">Cn</a> </td> <td title="Nihonium, 113 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Nihonium" title="Nihonium">Nh</a> </td> <td title="Flerovium, 114 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Flerovium" title="Flerovium">Fl</a> </td> <td title="Moskovium, 115 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Moskovium" title="Moskovium">Mc</a> </td> <td title="Livermorium, 116 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Livermorium" title="Livermorium">Lv</a> </td> <td title="Tenesin, 117 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Tenesin" title="Tenesin">Ts</a> </td> <td title="Oganeson, 118 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Oganeson" title="Oganeson">Og</a> </td></tr> <tr> <td colspan="33"> <table class="wikitable" cellspacing="2" cellpadding="0" style="width:100%; line-height:120%; text-align:center; vertical-align:top; font-size:85%; background:#f8f8f8; margin:0; font-size:90%; margin-top:0.5em;"> <tbody><tr> <td> <table style="width:100%; table-layout:fixed; overflow:hidden;"> <tbody><tr> <td style="padding:0 1px; background:#ff6666;"><a href="/wiki/Logam_alkali" title="Logam alkali">Logam alkali</a> </td> <td style="padding:0 1px; background:#ffdead;"><a href="/wiki/Logam_alkali_tanah" title="Logam alkali tanah">Logam alkali tanah</a> </td> <td style="padding:0 1px; background:#ffbfff;"><a href="/wiki/Lantanida" title="Lantanida">Lantanida</a> </td> <td style="padding:0 1px; background:#ff99cc;"><a href="/wiki/Aktinida" title="Aktinida">Aktinida</a> </td> <td style="padding:0 1px; background:#ffc0c0;"><a href="/wiki/Logam_transisi" title="Logam transisi">Logam transisi</a> </td> <td style="padding:0 1px; background:#cccccc;"><a href="/wiki/Logam_miskin" title="Logam miskin">Logam miskin</a> </td> <td style="padding:0 1px; background:#cccc99;"><a href="/wiki/Metaloid" title="Metaloid">Metaloid</a> </td> <td style="padding:0 1px; background:#a1ffc3;"><a href="/wiki/Nonlogam_poliatomik" class="mw-redirect" title="Nonlogam poliatomik">Nonlogam poliatomik</a> </td> <td style="padding:0 1px; background:#e7ff8f;"><a href="/wiki/Nonlogam_diatomik" class="mw-redirect" title="Nonlogam diatomik">Nonlogam diatomik</a> </td> <td style="padding:0 1px; background:#c0ffff;"><a href="/wiki/Gas_mulia" title="Gas mulia">Gas mulia</a> </td> <td rowspan="1" style="padding:0 1px; background:#e8e8e8;">Sifat kimia belum diketahui </td></tr> </tbody></table> </td></tr> </tbody></table> </td></tr></tbody></table> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r23782733">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist 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td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}</style></div><div role="navigation" class="navbox" aria-labelledby="Senyawa_protaktinium" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r18590415"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-lihat"><a href="/wiki/Templat:Senyawa_protaktinium" title="Templat:Senyawa protaktinium"><abbr title="Lihat templat ini">l</abbr></a></li><li class="nv-bicara"><a href="/wiki/Pembicaraan_Templat:Senyawa_protaktinium" title="Pembicaraan Templat:Senyawa protaktinium"><abbr title="Diskusikan 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trihidrida">PaH3</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Pa(IV)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Protaktinium(IV)_oksida" title="Protaktinium(IV) oksida">PaO2</a></li> <li><a href="/wiki/Protaktinium(IV)_klorida" title="Protaktinium(IV) klorida">PaCl4</a></li> <li><a href="/wiki/Protaktinium(IV)_bromida" title="Protaktinium(IV) bromida">PaBr4</a></li> <li><a href="/w/index.php?title=Protaktinium(IV)_oksiklorida&action=edit&redlink=1" class="new" title="Protaktinium(IV) oksiklorida (halaman belum tersedia)">PaOCl2</a></li> <li><a href="/w/index.php?title=Protaktinium(IV)_karbida&action=edit&redlink=1" class="new" title="Protaktinium(IV) karbida (halaman belum tersedia)">PaC</a></li> <li><a href="/wiki/Aktinosena" title="Aktinosena">Pa(C8H8)2</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Pa(V)</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Protaktinium(V)_oksida" title="Protaktinium(V) oksida">Pa2O5</a></li> <li><a href="/wiki/Protaktinium(V)_fluorida" title="Protaktinium(V) fluorida">PaF5</a></li> <li><a href="/wiki/Protaktinium(V)_klorida" title="Protaktinium(V) klorida">PaCl5</a></li> <li><a href="/wiki/Protaktinium(V)_bromida" title="Protaktinium(V) bromida">PaBr5</a></li> <li><a href="/wiki/Protaktinium(V)_iodida" title="Protaktinium(V) iodida">PaI5</a></li> <li><a href="/w/index.php?title=Protaktinium(V)_dioksifluorida&action=edit&redlink=1" class="new" title="Protaktinium(V) dioksifluorida (halaman belum tersedia)">PaO2F</a></li> <li><a href="/w/index.php?title=Protaktinium(V)_dioksiklorida&action=edit&redlink=1" class="new" title="Protaktinium(V) dioksiklorida (halaman belum tersedia)">PaO2Cl</a></li> <li><a href="/w/index.php?title=Protaktinium(V)_dioksiiodida&action=edit&redlink=1" class="new" title="Protaktinium(V) dioksiiodida (halaman belum tersedia)">PaO2I</a></li> <li><a href="/w/index.php?title=Protaktinium(V)_oksinitrat&action=edit&redlink=1" class="new" title="Protaktinium(V) oksinitrat (halaman belum tersedia)">PaO(NO3)3</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r23782733"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r25847331"></div><div role="navigation" class="navbox authority-control" aria-labelledby="Pengawasan_otoritas_frameless_&#124;text-top_&#124;10px_&#124;alt=Sunting_ini_di_Wikidata_&#124;link=https&#58;//www.wikidata.org/wiki/Q1109#identifiers&#124;Sunting_ini_di_Wikidata" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Pengawasan_otoritas_frameless_&#124;text-top_&#124;10px_&#124;alt=Sunting_ini_di_Wikidata_&#124;link=https&#58;//www.wikidata.org/wiki/Q1109#identifiers&#124;Sunting_ini_di_Wikidata" style="font-size:114%;margin:0 4em"><a href="/wiki/Bantuan:Pengawasan_otoritas" title="Bantuan:Pengawasan otoritas">Pengawasan otoritas</a> <a href="https://www.wikidata.org/wiki/Q1109#identifiers" title="Sunting ini di Wikidata"><img alt="Sunting ini di Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, 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