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[r]" accesskey="r"><span>Perubahan terbaru</span></a></li><li id="n-Artikel-pilihan" class="mw-list-item"><a href="/wiki/Wikipedia:Artikel_pilihan/Topik"><span>Artikel pilihan</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Peristiwa_terkini" title="Temukan informasi tentang peristiwa terkini"><span>Peristiwa terkini</span></a></li><li id="n-newpage" class="mw-list-item"><a href="/wiki/Istimewa:Halaman_baru"><span>Halaman baru</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Istimewa:Halaman_sembarang" title="Tampilkan sembarang halaman [x]" accesskey="x"><span>Halaman sembarang</span></a></li> </ul> </div> </div> <div id="p-Komunitas" class="vector-menu mw-portlet mw-portlet-Komunitas" > <div class="vector-menu-heading"> Komunitas </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-Warung-Kopi" class="mw-list-item"><a href="/wiki/Wikipedia:Warung_Kopi"><span>Warung Kopi</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Portal:Komunitas" title="Tentang proyek, apa yang dapat Anda lakukan, di mana untuk mencari sesuatu"><span>Portal komunitas</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Bantuan:Isi" title="Tempat mencari bantuan."><span>Bantuan</span></a></li> </ul> </div> </div> <div id="p-Wikipedia" class="vector-menu mw-portlet mw-portlet-Wikipedia" > <div class="vector-menu-heading"> Wikipedia </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:Perihal"><span>Tentang Wikipedia</span></a></li><li id="n-Pancapilar" class="mw-list-item"><a href="/wiki/Wikipedia:Pancapilar"><span>Pancapilar</span></a></li><li id="n-Kebijakan" class="mw-list-item"><a href="/wiki/Wikipedia:Kebijakan_dan_pedoman"><span>Kebijakan</span></a></li><li id="n-Hubungi-kami" class="mw-list-item"><a href="/wiki/Wikipedia:Hubungi_kami"><span>Hubungi kami</span></a></li><li id="n-Bak-pasir" class="mw-list-item"><a href="/wiki/Wikipedia:Bak_pasir"><span>Bak pasir</span></a></li> </ul> </div> </div> <div id="p-Bagikan" class="vector-menu mw-portlet mw-portlet-Bagikan emptyPortlet" > <div class="vector-menu-heading"> Bagikan </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Halaman_Utama" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="Ensiklopedia Bebas" src="/static/images/mobile/copyright/wikipedia-tagline-id.svg" width="120" height="14" style="width: 7.5em; height: 0.875em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Istimewa:Pencarian" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Cari di Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Pencarian</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Telusuri Wikipedia" aria-label="Telusuri Wikipedia" autocapitalize="sentences" title="Cari di Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Istimewa:Pencarian"> </div> <button class="cdx-button cdx-search-input__end-button">Cari</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Perkakas pribadi"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Tampilan"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Tampilan" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Tampilan</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_id.wikipedia.org&uselang=id" class=""><span>Menyumbang</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Istimewa:Buat_akun&returnto=Unsur+periode+1" title="Anda dianjurkan untuk membuat akun dan masuk log; meskipun, hal itu tidak diwajibkan" class=""><span>Buat akun baru</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Istimewa:Masuk_log&returnto=Unsur+periode+1" title="Anda disarankan untuk masuk log, meskipun hal itu tidak diwajibkan. [o]" accesskey="o" class=""><span>Masuk log</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Opsi lainnya" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Perkakas pribadi" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Perkakas pribadi</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Menu pengguna" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_id.wikipedia.org&uselang=id"><span>Menyumbang</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Istimewa:Buat_akun&returnto=Unsur+periode+1" title="Anda dianjurkan untuk membuat akun dan masuk log; meskipun, hal itu tidak diwajibkan"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Buat akun baru</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Istimewa:Masuk_log&returnto=Unsur+periode+1" title="Anda disarankan untuk masuk log, meskipun hal itu tidak diwajibkan. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Masuk log</span></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"><span>pelajari lebih lanjut</span></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"><span>Kontribusi</span></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"><span>Pembicaraan</span></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-Tren_periodik" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Tren_periodik"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Tren periodik</span> </div> </a> <ul id="toc-Tren_periodik-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Posisi_unsur-unsur_periode_1_dalam_tabel_periodik" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Posisi_unsur-unsur_periode_1_dalam_tabel_periodik"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Posisi unsur-unsur periode 1 dalam tabel periodik</span> </div> </a> <ul id="toc-Posisi_unsur-unsur_periode_1_dalam_tabel_periodik-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Unsur" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Unsur"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Unsur</span> </div> </a> <button aria-controls="toc-Unsur-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Gulingkan subbagian Unsur</span> </button> <ul id="toc-Unsur-sublist" class="vector-toc-list"> <li id="toc-Hidrogen" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Hidrogen"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Hidrogen</span> </div> </a> <ul id="toc-Hidrogen-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Helium" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Helium"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Helium</span> </div> </a> <ul id="toc-Helium-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Peran_biologis" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Peran_biologis"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Peran biologis</span> </div> </a> <ul id="toc-Peran_biologis-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Tabel_unsur" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Tabel_unsur"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Tabel unsur</span> </div> </a> <ul id="toc-Tabel_unsur-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"> <span class="vector-toc-numb">6</span> <span>Referensi</span> </div> </a> <ul id="toc-Referensi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lihat_juga" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Lihat_juga"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Lihat juga</span> </div> </a> <ul id="toc-Lihat_juga-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bacaan_tambahan" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bacaan_tambahan"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Bacaan tambahan</span> </div> </a> <ul id="toc-Bacaan_tambahan-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" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Gulingkan daftar isi</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Unsur periode 1</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Pergi ke artikel dalam bahasa lain. Terdapat 58 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-58" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">58 bahasa</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Elementos_d%27o_periodo_1" title="Elementos d'o periodo 1 – Aragon" lang="an" hreflang="an" data-title="Elementos d'o periodo 1" data-language-autonym="Aragonés" data-language-local-name="Aragon" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-anp mw-list-item"><a href="https://anp.wikipedia.org/wiki/%E0%A4%86%E0%A4%B5%E0%A4%B0%E0%A5%8D%E0%A4%A4_1_%E0%A4%A4%E0%A4%A4%E0%A5%8D%E0%A4%B5" title="आवर्त 1 तत्व – Angika" lang="anp" hreflang="anp" data-title="आवर्त 1 तत्व" data-language-autonym="अंगिका" data-language-local-name="Angika" class="interlanguage-link-target"><span>अंगिका</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D9%86%D8%A7%D8%B5%D8%B1_%D8%A7%D9%84%D8%AF%D9%88%D8%B1%D8%A9_%D8%A7%D9%84%D8%A3%D9%88%D9%84%D9%89" title="عناصر الدورة الأولى – Arab" lang="ar" hreflang="ar" data-title="عناصر الدورة الأولى" data-language-autonym="العربية" data-language-local-name="Arab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Elementos_del_periodu_1" title="Elementos del periodu 1 – Asturia" lang="ast" hreflang="ast" data-title="Elementos del periodu 1" data-language-autonym="Asturianu" data-language-local-name="Asturia" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/D%C3%B6vri_sistemin_birinci_periodu" title="Dövri sistemin birinci periodu – Azerbaijani" lang="az" hreflang="az" data-title="Dövri sistemin birinci periodu" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%9F%D0%B5%D1%80%D0%B8%D0%BE%D0%B4%D0%B8%D0%BA_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0%D0%BD%D1%8B%D2%A3_%D0%B1%D0%B5%D1%80%D0%B5%D0%BD%D1%81%D0%B5_%D0%BF%D0%B5%D1%80%D0%B8%D0%BE%D0%B4%D1%8B" title="Периодик системаның беренсе периоды – Bashkir" lang="ba" hreflang="ba" data-title="Периодик системаның беренсе периоды" data-language-autonym="Башҡортса" data-language-local-name="Bashkir" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9F%D0%B5%D1%80%D0%B8%D0%BE%D0%B4_1_%D0%BD%D0%B0_%D0%BF%D0%B5%D1%80%D0%B8%D0%BE%D0%B4%D0%B8%D1%87%D0%BD%D0%B0%D1%82%D0%B0_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0" title="Период 1 на периодичната система – Bulgaria" lang="bg" hreflang="bg" data-title="Период 1 на периодичната система" data-language-autonym="Български" data-language-local-name="Bulgaria" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%AA%E0%A5%80%E0%A4%B0%E0%A4%BF%E0%A4%AF%E0%A4%A1_1_%E0%A4%A4%E0%A4%A4%E0%A5%8D%E0%A4%B5" title="पीरियड 1 तत्व – Bhojpuri" lang="bh" hreflang="bh" data-title="पीरियड 1 तत्व" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AA%E0%A7%8D%E0%A6%B0%E0%A6%A5%E0%A6%AE_%E0%A6%AA%E0%A6%B0%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%AF%E0%A6%BC%E0%A7%87%E0%A6%B0_%E0%A6%AE%E0%A7%8C%E0%A6%B2" title="প্রথম পর্যায়ের মৌল – Bengali" lang="bn" hreflang="bn" data-title="প্রথম পর্যায়ের মৌল" data-language-autonym="বাংলা" data-language-local-name="Bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca badge-Q17437798 badge-goodarticle mw-list-item" title="artikel bagus"><a href="https://ca.wikipedia.org/wiki/Elements_del_per%C3%ADode_1" title="Elements del període 1 – Katalan" lang="ca" hreflang="ca" data-title="Elements del període 1" data-language-autonym="Català" data-language-local-name="Katalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/1._perioda" title="1. perioda – Cheska" lang="cs" hreflang="cs" data-title="1. perioda" data-language-autonym="Čeština" data-language-local-name="Cheska" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Elfen_cyfnod_1" title="Elfen cyfnod 1 – Welsh" lang="cy" hreflang="cy" data-title="Elfen cyfnod 1" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Periode_1-grundstof" title="Periode 1-grundstof – Dansk" lang="da" hreflang="da" data-title="Periode 1-grundstof" data-language-autonym="Dansk" data-language-local-name="Dansk" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Chemische_Elemente_der_ersten_Periode" title="Chemische Elemente der ersten Periode – Jerman" lang="de" hreflang="de" data-title="Chemische Elemente der ersten Periode" data-language-autonym="Deutsch" data-language-local-name="Jerman" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A3%CF%84%CE%BF%CE%B9%CF%87%CE%B5%CE%AF%CE%BF_%CE%A0%CE%B5%CF%81%CE%B9%CF%8C%CE%B4%CE%BF%CF%85_1" title="Στοιχείο Περιόδου 1 – Yunani" lang="el" hreflang="el" data-title="Στοιχείο Περιόδου 1" data-language-autonym="Ελληνικά" data-language-local-name="Yunani" class="interlanguage-link-target"><span>Ελληνικά</span></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/Period_1_element" title="Period 1 element – Inggris" lang="en" hreflang="en" data-title="Period 1 element" data-language-autonym="English" data-language-local-name="Inggris" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Elemento_de_periodo_1" title="Elemento de periodo 1 – Esperanto" lang="eo" hreflang="eo" data-title="Elemento de periodo 1" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es badge-Q17437798 badge-goodarticle mw-list-item" title="artikel bagus"><a href="https://es.wikipedia.org/wiki/Elementos_del_periodo_1" title="Elementos del periodo 1 – Spanyol" lang="es" hreflang="es" data-title="Elementos del periodo 1" data-language-autonym="Español" data-language-local-name="Spanyol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/1._periodoko_elementu" title="1. periodoko elementu – Basque" lang="eu" hreflang="eu" data-title="1. periodoko elementu" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa badge-Q17437798 badge-goodarticle mw-list-item" title="artikel bagus"><a href="https://fa.wikipedia.org/wiki/%D8%AF%D9%88%D8%B1%D9%87_%DB%B1_%D8%AC%D8%AF%D9%88%D9%84_%D8%AA%D9%86%D8%A7%D9%88%D8%A8%DB%8C" title="دوره ۱ جدول تناوبی – Persia" lang="fa" hreflang="fa" data-title="دوره ۱ جدول تناوبی" data-language-autonym="فارسی" data-language-local-name="Persia" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Jakson_1_alkuaine" title="Jakson 1 alkuaine – Suomi" lang="fi" hreflang="fi" data-title="Jakson 1 alkuaine" data-language-autonym="Suomi" data-language-local-name="Suomi" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/P%C3%A9riode_1_du_tableau_p%C3%A9riodique" title="Période 1 du tableau périodique – Prancis" lang="fr" hreflang="fr" data-title="Période 1 du tableau périodique" data-language-autonym="Français" data-language-local-name="Prancis" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Periode-1-Element" title="Periode-1-Element – Frisia Utara" lang="frr" hreflang="frr" data-title="Periode-1-Element" data-language-autonym="Nordfriisk" data-language-local-name="Frisia Utara" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Perioade_1_(periodyk_systeem)" title="Perioade 1 (periodyk systeem) – Frisia Barat" lang="fy" hreflang="fy" data-title="Perioade 1 (periodyk systeem)" data-language-autonym="Frysk" data-language-local-name="Frisia Barat" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Elementos_de_periodo_1" title="Elementos de periodo 1 – Interlingua" lang="ia" hreflang="ia" data-title="Elementos de periodo 1" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Elementi_del_periodo_1" title="Elementi del periodo 1 – Italia" lang="it" hreflang="it" data-title="Elementi del periodo 1" data-language-autonym="Italiano" data-language-local-name="Italia" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E7%AC%AC1%E5%91%A8%E6%9C%9F%E5%85%83%E7%B4%A0" title="第1周期元素 – Jepang" lang="ja" hreflang="ja" data-title="第1周期元素" data-language-autonym="日本語" data-language-local-name="Jepang" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%94%E1%83%9A%E1%83%94%E1%83%9B%E1%83%94%E1%83%9C%E1%83%A2%E1%83%97%E1%83%90_%E1%83%9E%E1%83%94%E1%83%A0%E1%83%98%E1%83%9D%E1%83%93%E1%83%A3%E1%83%9A%E1%83%98_%E1%83%A1%E1%83%98%E1%83%A1%E1%83%A2%E1%83%94%E1%83%9B%E1%83%98%E1%83%A1_%E1%83%9E%E1%83%98%E1%83%A0%E1%83%95%E1%83%94%E1%83%9A%E1%83%98_%E1%83%9E%E1%83%94%E1%83%A0%E1%83%98%E1%83%9D%E1%83%93%E1%83%98" title="ელემენტთა პერიოდული სისტემის პირველი პერიოდი – Georgia" lang="ka" hreflang="ka" data-title="ელემენტთა პერიოდული სისტემის პირველი პერიოდი" data-language-autonym="ქართული" data-language-local-name="Georgia" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/1%EC%A3%BC%EA%B8%B0_%EC%9B%90%EC%86%8C" title="1주기 원소 – Korea" lang="ko" hreflang="ko" data-title="1주기 원소" data-language-autonym="한국어" data-language-local-name="Korea" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Elementum_periodi_primae" title="Elementum periodi primae – Latin" lang="la" hreflang="la" data-title="Elementum periodi primae" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Element_del_period_1" title="Element del period 1 – Lombard" lang="lmo" hreflang="lmo" data-title="Element del period 1" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Pirmojo_periodo_elementas" title="Pirmojo periodo elementas – Lituavi" lang="lt" hreflang="lt" data-title="Pirmojo periodo elementas" data-language-autonym="Lietuvių" data-language-local-name="Lituavi" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/I_%D0%BF%D0%B5%D1%80%D0%B8%D0%BE%D0%B4%D0%B0_%D0%BD%D0%B0_%D0%BF%D0%B5%D1%80%D0%B8%D0%BE%D0%B4%D0%BD%D0%B8%D0%BE%D1%82_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC" title="I периода на периодниот систем – Makedonia" lang="mk" hreflang="mk" data-title="I периода на периодниот систем" data-language-autonym="Македонски" data-language-local-name="Makedonia" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%92%E0%B4%A8%E0%B5%8D%E0%B4%A8%E0%B4%BE%E0%B4%82_%E0%B4%AA%E0%B5%80%E0%B4%B0%E0%B5%80%E0%B4%A1%E0%B5%8D_%E0%B4%AE%E0%B5%82%E0%B4%B2%E0%B4%95%E0%B4%99%E0%B5%8D%E0%B4%99%E0%B5%BE" title="ഒന്നാം പീരീഡ് മൂലകങ്ങൾ – Malayalam" lang="ml" hreflang="ml" data-title="ഒന്നാം പീരീഡ് മൂലകങ്ങൾ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Unsur_kala_1" title="Unsur kala 1 – Melayu" lang="ms" hreflang="ms" data-title="Unsur kala 1" data-language-autonym="Bahasa Melayu" data-language-local-name="Melayu" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Periode-1-element" title="Periode-1-element – Belanda" lang="nl" hreflang="nl" data-title="Periode-1-element" data-language-autonym="Nederlands" data-language-local-name="Belanda" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%AA%E0%A9%80%E0%A8%B0%E0%A8%A1_1_%E0%A8%A4%E0%A9%B1%E0%A8%A4" title="ਪੀਰਡ 1 ਤੱਤ – Punjabi" lang="pa" hreflang="pa" data-title="ਪੀਰਡ 1 ਤੱਤ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Pierwiastki_pierwszego_okresu" title="Pierwiastki pierwszego okresu – Polski" lang="pl" hreflang="pl" data-title="Pierwiastki pierwszego okresu" data-language-autonym="Polski" data-language-local-name="Polski" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Per%C3%ADodo_1_(qu%C3%ADmica)" title="Período 1 (química) – Portugis" lang="pt" hreflang="pt" data-title="Período 1 (química)" data-language-autonym="Português" data-language-local-name="Portugis" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Elementele_perioadei_1" title="Elementele perioadei 1 – Rumania" lang="ro" hreflang="ro" data-title="Elementele perioadei 1" data-language-autonym="Română" data-language-local-name="Rumania" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%B5%D1%80%D0%B2%D1%8B%D0%B9_%D0%BF%D0%B5%D1%80%D0%B8%D0%BE%D0%B4_%D0%BF%D0%B5%D1%80%D0%B8%D0%BE%D0%B4%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B9_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D1%8B" title="Первый период периодической системы – Rusia" lang="ru" hreflang="ru" data-title="Первый период периодической системы" data-language-autonym="Русский" data-language-local-name="Rusia" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Elementi_1._periode" title="Elementi 1. periode – Serbo-Kroasia" lang="sh" hreflang="sh" data-title="Elementi 1. periode" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Kroasia" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/1_%E0%B7%80%E0%B6%B1_%E0%B6%86%E0%B7%80%E0%B6%BB%E0%B7%8A%E0%B6%AD%E0%B6%BA%E0%B7%9A_%E0%B6%B8%E0%B7%96%E0%B6%BD%E0%B6%AF%E0%B7%8A%E2%80%8D%E0%B6%BB%E0%B7%80%E0%B7%8A%E2%80%8D%E0%B6%BA%E0%B6%BA" title="1 වන ආවර්තයේ මූලද්‍රව්‍යය – Sinhala" lang="si" hreflang="si" data-title="1 වන ආවර්තයේ මූලද්‍රව්‍යය" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Period_1_element" title="Period 1 element – Simple English" lang="en-simple" hreflang="en-simple" data-title="Period 1 element" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/1._peri%C3%B3da" title="1. perióda – Slovak" lang="sk" hreflang="sk" data-title="1. perióda" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Element_1._periode" title="Element 1. periode – Sloven" lang="sl" hreflang="sl" data-title="Element 1. periode" data-language-autonym="Slovenščina" data-language-local-name="Sloven" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/1._%D0%BF%D0%B5%D1%80%D0%B8%D0%BE%D0%B4%D0%B0_%D1%85%D0%B5%D0%BC%D0%B8%D1%98%D1%81%D0%BA%D0%B8%D1%85_%D0%B5%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D0%B0%D1%82%D0%B0" title="1. периода хемијских елемената – Serbia" lang="sr" hreflang="sr" data-title="1. периода хемијских елемената" data-language-autonym="Српски / srpski" data-language-local-name="Serbia" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%95%E0%AE%BF%E0%AE%9F%E0%AF%88%E0%AE%95%E0%AF%8D%E0%AE%95%E0%AF%81%E0%AE%B4%E0%AF%81_1_%E0%AE%A4%E0%AE%A9%E0%AE%BF%E0%AE%AE%E0%AE%99%E0%AF%8D%E0%AE%95%E0%AE%B3%E0%AF%8D" title="கிடைக்குழு 1 தனிமங்கள் – Tamil" lang="ta" hreflang="ta" data-title="கிடைக்குழு 1 தனிமங்கள்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%AA%E0%B1%80%E0%B0%B0%E0%B0%BF%E0%B0%AF%E0%B0%A1%E0%B1%8D_1_%E0%B0%AE%E0%B1%82%E0%B0%B2%E0%B0%95%E0%B0%82" title="పీరియడ్ 1 మూలకం – Telugu" lang="te" hreflang="te" data-title="పీరియడ్ 1 మూలకం" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%98%E0%B8%B2%E0%B8%95%E0%B8%B8%E0%B8%84%E0%B8%B2%E0%B8%9A_1" title="ธาตุคาบ 1 – Thai" lang="th" hreflang="th" data-title="ธาตุคาบ 1" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/1._periyot_elementi" title="1. periyot elementi – Turki" lang="tr" hreflang="tr" data-title="1. periyot elementi" data-language-autonym="Türkçe" data-language-local-name="Turki" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D0%B5%D1%80%D1%96%D0%BE%D0%B4_1_%D0%BF%D0%B5%D1%80%D1%96%D0%BE%D0%B4%D0%B8%D1%87%D0%BD%D0%BE%D1%97_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B8_%D0%B5%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D1%82%D1%96%D0%B2" title="Період 1 періодичної системи елементів – Ukraina" lang="uk" hreflang="uk" data-title="Період 1 періодичної системи елементів" data-language-autonym="Українська" data-language-local-name="Ukraina" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Nguy%C3%AAn_t%E1%BB%91_chu_k%E1%BB%B3_1" title="Nguyên tố chu kỳ 1 – Vietnam" lang="vi" hreflang="vi" data-title="Nguyên tố chu kỳ 1" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnam" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Periode-1-element" title="Periode-1-element – West Flemish" lang="vls" hreflang="vls" data-title="Periode-1-element" data-language-autonym="West-Vlams" data-language-local-name="West Flemish" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E7%AC%AC1%E5%91%A8%E6%9C%9F%E5%85%83%E7%B4%A0" title="第1周期元素 – Wu Tionghoa" lang="wuu" hreflang="wuu" data-title="第1周期元素" data-language-autonym="吴语" data-language-local-name="Wu Tionghoa" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%AC%AC1%E5%91%A8%E6%9C%9F%E5%85%83%E7%B4%A0" title="第1周期元素 – Tionghoa" lang="zh" hreflang="zh" data-title="第1周期元素" data-language-autonym="中文" data-language-local-name="Tionghoa" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/T%C4%93-1_chiu-k%C3%AE_go%C3%A2n-s%C3%B2%CD%98" title="Tē-1 chiu-kî goân-sò͘ – Minnan" lang="nan" hreflang="nan" data-title="Tē-1 chiu-kî goân-sò͘" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%AC%AC1%E9%80%B1%E6%9C%9F%E5%85%83%E7%B4%A0" title="第1週期元素 – Kanton" lang="yue" 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background:#d8d8d8; padding:2px 4px; font-size:90%; line-height:110%; border:none;"><b>Periode 1 dalam <a href="/wiki/Tabel_periodik" title="Tabel periodik">tabel periodik</a></b> </td></tr> <tr> <td style="margin:0; padding:0;"><div style="width:100%;"><div style="margin:0 auto;"><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"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999; border:1px solid black; box-sizing: border-box;;">Hidrogen</span></a> </td> <td colspan="30" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Helium" title="Helium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999; border:1px solid black; box-sizing: border-box;;">Helium</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Lithium" class="mw-redirect" title="Lithium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Lithium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Berilium" title="Berilium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Berilium</span></a> </td> <td colspan="24" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Boron" title="Boron"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Boron</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Karbon" title="Karbon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Karbon</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nitrogen" title="Nitrogen"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Nitrogen</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Oksigen" title="Oksigen"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Oksigen</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fluor" class="mw-redirect" title="Fluor"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Fluor</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neon" title="Neon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Neon</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Natrium" title="Natrium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Natrium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Magnesium" title="Magnesium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Magnesium</span></a> </td> <td colspan="24" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Aluminium" title="Aluminium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Aluminium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Silikon" title="Silikon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Silikon</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fosfor" title="Fosfor"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Fosfor</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Sulfur" class="mw-redirect" title="Sulfur"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Sulfur</span></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)"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Clor</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Argon" title="Argon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Argon</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Potasium" class="mw-redirect" title="Potasium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Potasium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Kalsium" title="Kalsium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Kalsium</span></a> </td> <td colspan="14" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Skandium" title="Skandium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Skandium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Titanium" title="Titanium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Titanium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Vanadium" title="Vanadium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Vanadium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Chromium" class="mw-redirect" title="Chromium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Chromium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mangan" title="Mangan"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Mangan</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Besi" title="Besi"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Besi</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cobalt" class="mw-redirect" title="Cobalt"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Cobalt</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nikel" title="Nikel"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Nikel</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tembaga" title="Tembaga"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Tembaga</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Seng" title="Seng"><span 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style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Selen</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bromin" title="Bromin"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Bromin</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Kripton" title="Kripton"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Kripton</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Rubidium" title="Rubidium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Rubidium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Strontium" class="mw-redirect" title="Strontium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Strontium</span></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"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Yttrium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Zirconium" class="mw-redirect" title="Zirconium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Zirconium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Niobium" title="Niobium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Niobium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Molybdenum" class="mw-redirect" title="Molybdenum"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Molybdenum</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Technetium" class="mw-redirect" title="Technetium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Technetium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Ruthenium" class="mw-redirect" title="Ruthenium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Ruthenium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rhodium" class="mw-redirect" title="Rhodium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Rhodium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Palladium" class="mw-redirect" title="Palladium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Palladium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Silver" class="mw-redirect" title="Silver"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Silver</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cadmium" class="mw-redirect" title="Cadmium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Cadmium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Indium" title="Indium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Indium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tin" title="Tin"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Tin</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Antimony" class="mw-redirect" title="Antimony"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Antimony</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tellurium" class="mw-redirect" title="Tellurium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Tellurium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iodine" class="mw-redirect" title="Iodine"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Iodine</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Xenon" title="Xenon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Xenon</span></a> </td></tr> <tr style="border:none;padding:0;"> <td style="border:none;padding:0;"><a href="/wiki/Caesium" class="mw-redirect" title="Caesium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Caesium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Barium" title="Barium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Barium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lanthanum" class="mw-redirect" title="Lanthanum"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Lanthanum</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cerium" class="mw-redirect" title="Cerium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Cerium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Praseodymium" class="mw-redirect" title="Praseodymium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Praseodymium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neodymium" class="mw-redirect" title="Neodymium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Neodymium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Promethium" class="mw-redirect" title="Promethium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Promethium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Samarium" title="Samarium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Samarium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Europium" title="Europium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Europium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gadolinium" title="Gadolinium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Gadolinium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Terbium" title="Terbium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Terbium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Dysprosium" class="mw-redirect" title="Dysprosium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Dysprosium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Holmium" title="Holmium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Holmium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Erbium" title="Erbium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Erbium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thulium" class="mw-redirect" title="Thulium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Thulium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Ytterbium" class="mw-redirect" title="Ytterbium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Ytterbium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lutetium" class="mw-redirect" title="Lutetium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Lutetium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Hafnium" title="Hafnium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Hafnium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tantalum" title="Tantalum"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Tantalum</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tungsten" class="mw-redirect" title="Tungsten"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Tungsten</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rhenium" class="mw-redirect" title="Rhenium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Rhenium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Osmium" title="Osmium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Osmium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iridium" title="Iridium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Iridium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Platinum" class="mw-redirect" title="Platinum"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Platinum</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gold" class="mw-redirect" title="Gold"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Gold</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mercury_(element)" class="mw-redirect" title="Mercury (element)"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Mercury (element)</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thallium" class="mw-redirect" title="Thallium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Thallium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lead" class="mw-redirect" title="Lead"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Lead</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bismuth" class="mw-redirect" title="Bismuth"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Bismuth</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Polonium" title="Polonium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Polonium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Astatine" class="mw-redirect" title="Astatine"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Astatine</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Radon" title="Radon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Radon</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Francium" class="mw-redirect" title="Francium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Francium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Radium" title="Radium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Radium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Actinium" class="mw-redirect" title="Actinium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Actinium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thorium" class="mw-redirect" title="Thorium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Thorium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Protactinium" class="mw-redirect" title="Protactinium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Protactinium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Uranium" title="Uranium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Uranium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neptunium" title="Neptunium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Neptunium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Plutonium" title="Plutonium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Plutonium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Americium" class="mw-redirect" title="Americium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Americium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Curium" class="mw-redirect" title="Curium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Curium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Berkelium" title="Berkelium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Berkelium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Californium" class="mw-redirect" title="Californium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Californium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Einsteinium" title="Einsteinium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Einsteinium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fermium" title="Fermium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Fermium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mendelevium" title="Mendelevium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Mendelevium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nobelium" title="Nobelium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Nobelium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lawrencium" class="mw-redirect" title="Lawrencium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Lawrencium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rutherfordium" class="mw-redirect" title="Rutherfordium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Rutherfordium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Dubnium" title="Dubnium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Dubnium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Seaborgium" title="Seaborgium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Seaborgium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bohrium" title="Bohrium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Bohrium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Hassium" class="mw-redirect" title="Hassium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Hassium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Meitnerium" title="Meitnerium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Meitnerium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Darmstadtium" title="Darmstadtium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Darmstadtium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Roentgenium" title="Roentgenium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Roentgenium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Copernicium" class="mw-redirect" title="Copernicium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Copernicium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nihonium" title="Nihonium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Nihonium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Flerovium" title="Flerovium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Flerovium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Moscovium" class="mw-redirect" title="Moscovium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Moscovium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Livermorium" title="Livermorium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Livermorium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tennessine" class="mw-redirect" title="Tennessine"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Tennessine</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Oganesson" class="mw-redirect" title="Oganesson"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Oganesson</span></a> </td></tr></tbody></table> </div></div></div> </td></tr> </tbody></table> <p><b>Unsur periode 1</b> adalah <a href="/wiki/Unsur_kimia" title="Unsur kimia">unsur-unsur kimia</a> dalam baris (atau <a href="/wiki/Periode_tabel_periodik" title="Periode tabel periodik">periode</a>) pertama dari <a href="/wiki/Tabel_periodik" title="Tabel periodik">tabel periodik unsur kimia</a>. Tabel periodik disusun berdasarkan baris untuk menggambarkan keberulangan tren (periodik) perilaku kimia unsur-unsur seiring dengan kenaikan nomor atom. Baris baru dimulai ketika perilaku kimia mulai berulang, artinya unsur-unsur dengan perilaku yang sama akan jatuh pada kolom vertikal yang sama. </p><p>Periode 1 mengandung lebih sedikit unsur daripada periode lain dalam tabel, dengan hanya 2 anggota yaitu: <a href="/wiki/Hidrogen" title="Hidrogen">hidrogen</a> dan <a href="/wiki/Helium" title="Helium">helium</a>. Situasi ini dapat dijelakan menggunakan teori modern <a href="/wiki/Struktur_atom" class="mw-redirect" title="Struktur atom">struktur atom</a>. Dalam penjelasan <a href="/wiki/Mekanika_kuantum" title="Mekanika kuantum">mekanika kuantum</a> tentang struktur <a href="/wiki/Atom" title="Atom">atom</a>, periode ini berhubungan dengan pengisian <a href="/wiki/Blok-s" class="mw-redirect" title="Blok-s">orbital 1s</a>. Unsur-unsur periode 1 mematuhi kaidah duet yang menyatakan bahwa mereka memerlukan dua <a href="/wiki/Elektron" title="Elektron">elektron</a> untuk melengkapi <a href="/w/index.php?title=Kulit_valensi&action=edit&redlink=1" class="new" title="Kulit valensi (halaman belum tersedia)">kulit valensinya</a>. Jumlah maksimum elektron yang dapat diakomodasi oleh unsur-unsur ini adalah dua, yang keduanya terletak di dalam orbital 1s. Oleh karena itu, periode 1 hanya beranggotakan dua unsur. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Tren_periodik">Tren periodik</h2></div> <div class="thumb tright"><div class="thumbinner" style="width:208px;"> <table style="background: transparent; border: 0; padding: 0; margin: 0; width:204px;" cellspacing="0"> <tbody><tr style="vertical-align:top;"> <td style="padding: 0; margin: 0;" class="thumbimage"><span typeof="mw:File"><a href="/wiki/Berkas:Electron_shell_001_Hydrogen_(diatomic_nonmetal)_-_no_label.svg" class="mw-file-description" title="Hidrogen"><img alt="Hidrogen" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Electron_shell_001_Hydrogen_%28diatomic_nonmetal%29_-_no_label.svg/100px-Electron_shell_001_Hydrogen_%28diatomic_nonmetal%29_-_no_label.svg.png" decoding="async" width="100" height="100" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Electron_shell_001_Hydrogen_%28diatomic_nonmetal%29_-_no_label.svg/150px-Electron_shell_001_Hydrogen_%28diatomic_nonmetal%29_-_no_label.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Electron_shell_001_Hydrogen_%28diatomic_nonmetal%29_-_no_label.svg/200px-Electron_shell_001_Hydrogen_%28diatomic_nonmetal%29_-_no_label.svg.png 2x" data-file-width="800" data-file-height="800" /></a></span> </td> <td style="padding: 0; margin: 0; border: 0; width: 2px"> </td> <td style="padding: 0; margin: 0;" class="thumbimage"><span typeof="mw:File"><a href="/wiki/Berkas:Electron_shell_002_Helium_-_no_label.svg" class="mw-file-description" title="Hidrogen"><img alt="Hidrogen" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Electron_shell_002_Helium_-_no_label.svg/100px-Electron_shell_002_Helium_-_no_label.svg.png" decoding="async" width="100" height="100" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Electron_shell_002_Helium_-_no_label.svg/150px-Electron_shell_002_Helium_-_no_label.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/84/Electron_shell_002_Helium_-_no_label.svg/200px-Electron_shell_002_Helium_-_no_label.svg.png 2x" data-file-width="800" data-file-height="800" /></a></span> </td></tr> <tr style="vertical-align:top;"> <td style="padding: 0; margin: 0; border: 0;"><div class="thumbcaption"><a href="/wiki/Hidrogen" title="Hidrogen">Hidrogen</a></div> </td> <td style="padding: 0; margin: 0; border: 0;"> </td> <td style="padding: 0; margin: 0; border: 0;"><div class="thumbcaption"><a href="/wiki/Helium" title="Helium">Helium</a></div> </td></tr></tbody></table> </div> </div> <p>Semua periode lain dalam tabel periode mengandung sekurang-kurangnya 8 unsur, dan sering kali membantu menjelaskan <a href="/wiki/Tren_periodik" title="Tren periodik">tren periodik</a> sepanjang periode. Namun, periode 1 hanya beranggotakan dua unsur, sehingga konsep ini tidak berlaku di sini. </p><p>Dalam hal tren vertikal sepanjang golongan, helium dapat dipandang sebagai <a href="/wiki/Gas_mulia" title="Gas mulia">gas mulia</a> yang berada di puncak <a href="/wiki/Unsur_golongan_18" class="mw-redirect" title="Unsur golongan 18">Golongan 18</a>, tetapi sesuai dengan diskusi di bawah, kimia hidrogen bersifat unik dan tidak mudah dimasukkan ke dalam golongan manapun. </p> <div class="mw-heading mw-heading2"><h2 id="Posisi_unsur-unsur_periode_1_dalam_tabel_periodik">Posisi unsur-unsur periode 1 dalam tabel periodik</h2></div> <p>Meskipun baik hidrogen dan helium berada dalam <a href="/wiki/Blok-s" class="mw-redirect" title="Blok-s">blok-s</a>, mereka berdua tidak berperilaku yang sama dengan unsur-unsur blok-s lainnya. Perilaku keduanya sangat berbeda dibandingkan unsur-unsur blok-s lainnya hingga memunculkan semacam polemik tentang peletakan kedua unsur ini dalam tabel periodik. </p><p><a href="/wiki/Hidrogen" title="Hidrogen">Hidrogen</a> kadang-kadang diletakkan di atas <a href="/wiki/Litium" title="Litium">litium</a>,<sup id="cite_ref-iupac_1-0" class="reference"><a href="#cite_note-iupac-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> di atas <a href="/wiki/Karbon" title="Karbon">karbon</a>,<sup id="cite_ref-hydrogen_2-0" class="reference"><a href="#cite_note-hydrogen-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> di atas <a href="/wiki/Fluor" class="mw-redirect" title="Fluor">fluor</a>,<sup id="cite_ref-hydrogen_2-1" class="reference"><a href="#cite_note-hydrogen-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-hydrogen-halogen_3-0" class="reference"><a href="#cite_note-hydrogen-halogen-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> di atas litium dan fluor sekaligus (muncul dua kali),<sup id="cite_ref-chemistry-international_4-0" class="reference"><a href="#cite_note-chemistry-international-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> atau di kiri mengambang di atas unsur-unsur lainnya dan tidak dimasukkan ke dalam golongan manapun<sup id="cite_ref-chemistry-international_4-1" class="reference"><a href="#cite_note-chemistry-international-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> dalam <a href="/wiki/Tabel_periodik" title="Tabel periodik">tabel periodik</a>. </p><p><a href="/wiki/Helium" title="Helium">Helium</a> hampir selalu diletakkan di atas <a href="/wiki/Neon" title="Neon">neon</a> (yang merupakan anggota <a href="/wiki/Blok-p" class="mw-redirect" title="Blok-p">blok-p</a>) dalam tabel periodik sebagai <a href="/wiki/Gas_mulia" title="Gas mulia">gas mulia</a>,<sup id="cite_ref-iupac_1-1" class="reference"><a href="#cite_note-iupac-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> meskipun ia kadang-kadang diletakkan di atas <a href="/wiki/Berilium" title="Berilium">berilium</a> karena kesamaan konfigurasi elektronnya.<sup id="cite_ref-janet-table_5-0" class="reference"><a href="#cite_note-janet-table-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Unsur">Unsur</h2></div> <table class="wikitable"> <tbody><tr> <th colspan="3"><a href="/wiki/Unsur_kimia" title="Unsur kimia">Unsur kimia</a> </th> <th><a href="/wiki/Deret_kimia" title="Deret kimia">Deret kimia</a> </th> <th><a href="/wiki/Konfigurasi_elektron" title="Konfigurasi elektron">Konfigurasi elektron</a> </th></tr> <tr style="background-color: #e7ff8f"> <td>1 </td> <td><b>H</b> </td> <td><a href="/wiki/Hidrogen" title="Hidrogen">Hidrogen</a> </td> <td><a href="/wiki/Nonlogam_diatomik" class="mw-redirect" title="Nonlogam diatomik">Nonlogam diatomik</a> </td> <td>1s<sup>1</sup> </td></tr> <tr style="background-color: #c0ffff"> <td>2 </td> <td><b>He</b> </td> <td><a href="/wiki/Helium" title="Helium">Helium</a> </td> <td><a href="/wiki/Gas_mulia" title="Gas mulia">Gas mulia</a> </td> <td>1s<sup>2</sup> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Hidrogen">Hidrogen</h3></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/Hidrogen" title="Hidrogen">Hidrogen</a></div> <figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/Berkas:Hydrogen_discharge_tube.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Hydrogen_discharge_tube.jpg/150px-Hydrogen_discharge_tube.jpg" decoding="async" width="150" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Hydrogen_discharge_tube.jpg/225px-Hydrogen_discharge_tube.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Hydrogen_discharge_tube.jpg/300px-Hydrogen_discharge_tube.jpg 2x" data-file-width="3000" data-file-height="1000" /></a><figcaption>Tabung pembebas hidrogen</figcaption></figure> <figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/Berkas:Deuterium_discharge_tube.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Deuterium_discharge_tube.jpg/150px-Deuterium_discharge_tube.jpg" decoding="async" width="150" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Deuterium_discharge_tube.jpg/225px-Deuterium_discharge_tube.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Deuterium_discharge_tube.jpg/300px-Deuterium_discharge_tube.jpg 2x" data-file-width="3000" data-file-height="1000" /></a><figcaption>Tabung pembebas deuterium</figcaption></figure> <p><b>Hidrogen</b> adalah <a href="/wiki/Unsur_kimia" title="Unsur kimia">unsur kimia</a> dengan <a href="/wiki/Lambang_unsur" title="Lambang unsur">lambang</a> <b>H</b> dan <a href="/wiki/Nomor_atom" title="Nomor atom">nomor atom</a> 1. Pada <a href="/wiki/Temperatur_dan_tekanan_standar" title="Temperatur dan tekanan standar">temperatur dan tekanan standar</a>, hidrogen tidak berwarna, tidak berbau, <a href="/wiki/Nonlogam" title="Nonlogam">nonlogam</a>, tidak berasa, merupakan <a href="/wiki/Gas" title="Gas">gas</a> <a href="/wiki/Diatomik" class="mw-redirect" title="Diatomik">diatomik</a> yang sangat <a href="/wiki/Pembakaran" class="mw-disambig" title="Pembakaran">mudah terbakar</a> dengan <a href="/wiki/Rumus_molekul" class="mw-redirect" title="Rumus molekul">rumus molekul</a> H<sub>2</sub>. Dengan <a href="/wiki/Massa_atom" title="Massa atom">massa atom</a> 1,00794 <a href="/wiki/Satuan_massa_atom" class="mw-redirect" title="Satuan massa atom">amu</a>, hidrogen adalah unsur paling ringan.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>Hidrogen adalah unsur kimia paling <a href="/wiki/Kelimpahan_alami_unsur" title="Kelimpahan alami unsur">melimpah</a>, menyusun sekitar 75% massa unsur alam semesta.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Bintang" title="Bintang">Bintang</a> dalam <a href="/wiki/Deret_utama" title="Deret utama">deret utama</a> memiliki komponen utama hidrogen dalam kondisi <a href="/wiki/Plasma_(wujud_zat)" class="mw-redirect" title="Plasma (wujud zat)">plasmanya</a>. Unsur hidrogen relatif langka di <a href="/wiki/Bumi" title="Bumi">Bumi</a>, dan secara industri diproduksi dari <a href="/wiki/Hidrokarbon" title="Hidrokarbon">hidrokarbon</a> seperti metana, namun setelahnya sebagian besar unsur hidrogen yang dihasilkan digunakan "sendiri" (artinya hanya berputar-putar di tempat produksinya), dengan pasar terbesar hampir terbagi rata antara peningkatan <a href="/wiki/Bahan_bakar_fosil" title="Bahan bakar fosil">bahan bakar fosil</a>, seperti hydrocracking dan produksi <a href="/wiki/Amonia" title="Amonia">amonia</a>, yang sebagian besar untuk pasar pupuk. Hidrogen dapat diproduksi dari air menggunakan proses <a href="/wiki/Elektrolisis" title="Elektrolisis">elektrolisis</a>, tetapi proses ini secara komersial jauh lebih mahal daripada produksi hidrogen dari gas alam.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Isotop" title="Isotop">Isotop</a> hidrogen yang paling banyak terdapat di alam, diketahui sebagai <a href="/wiki/Hidrogen-1" class="mw-redirect" title="Hidrogen-1">protium</a>, memiliki satu <a href="/wiki/Proton" title="Proton">proton</a> tanpa <a href="/wiki/Neutron" title="Neutron">neutron</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Dalam senyawa ionik, ia dapat bermuatan positif, menjadi <a href="/wiki/Kation" class="mw-redirect" title="Kation">kation</a> yang merupakan proton telanjang, atau bermuatan negatif, menjadi <a href="/wiki/Anion" class="mw-redirect" title="Anion">anion</a> yang dikenal sebagai <a href="/wiki/Hidrida" title="Hidrida">hidrida</a>. Hidrogen dapat membentuk senyawa dengan sebagian besar unsur dan terdapat dalam <a href="/wiki/Air" title="Air">air</a> serta sebagian besar <a href="/wiki/Senyawa_organik" title="Senyawa organik">senyawa organik</a>.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Ia memainkan peran yang sangat penting dalam <a href="/w/index.php?title=Teori_reaksi_asam-basa&action=edit&redlink=1" class="new" title="Teori reaksi asam-basa (halaman belum tersedia)">kimia asam-basa</a>, di mana banyak reaksi terlibat pertukaran proton antar molekul yang dapat larut.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> Karena hanya atom netral yang dapat dianalisis menggunakan <a href="/wiki/Persamaan_Schr%C3%B6dinger" title="Persamaan Schrödinger">persamaan Schrödinger</a>, studi energetika dan <a href="/w/index.php?title=Spektrum_atom&action=edit&redlink=1" class="new" title="Spektrum atom (halaman belum tersedia)">spektrum</a> atom hidrogen memainkan peran kunci dalam pengembangan <a href="/wiki/Mekanika_kuantum" title="Mekanika kuantum">mekanika kuantum</a>.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p><p>Interaksi hidrogen dengan berbagai logam sangat penting dalam <a href="/wiki/Metalurgi" title="Metalurgi">metalurgi</a>, karena banyak logam dapat mengalami <a href="/w/index.php?title=Perapuhan_hidrogen&action=edit&redlink=1" class="new" title="Perapuhan hidrogen (halaman belum tersedia)">perapuhan hidrogen</a>,<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> dan dalam pengembangan cara aman penyimpanannya sebagai bahan bakar.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> Hidrogen sangat mudah larut dalam banyak senyawa yang tersusun oleh <a href="/wiki/Logam_tanah_jarang" title="Logam tanah jarang">logam tanah jarang</a> dan <a href="/wiki/Logam_transisi" title="Logam transisi">logam transisi</a><sup id="cite_ref-Takeshita_15-0" class="reference"><a href="#cite_note-Takeshita-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> serta dapat larut dalam logam baik <a href="/wiki/Kristal" title="Kristal">kristal</a> maupun <a href="/wiki/Padatan_amorf" class="mw-redirect" title="Padatan amorf">amorf</a>.<sup id="cite_ref-Kirchheim1_16-0" class="reference"><a href="#cite_note-Kirchheim1-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Kelarutan hidrogen dalam logam mempengaruhi distorsi lokal atau ketidakmurnian <a href="/w/index.php?title=Kisi_kristal&action=edit&redlink=1" class="new" title="Kisi kristal (halaman belum tersedia)">kisi kristal</a> logam.<sup id="cite_ref-Kirchheim2_17-0" class="reference"><a href="#cite_note-Kirchheim2-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Helium">Helium</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r18844875"><div role="note" class="hatnote navigation-not-searchable">Artikel utama: <a href="/wiki/Helium" title="Helium">Helium</a></div> <figure class="mw-halign-left" typeof="mw:File/Thumb"><span><img resource="/wiki/Berkas:Helium_discharge_tube.jpg" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/Helium_discharge_tube.jpg/150px-Helium_discharge_tube.jpg" decoding="async" width="150" height="100" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/Helium_discharge_tube.jpg/225px-Helium_discharge_tube.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/82/Helium_discharge_tube.jpg/300px-Helium_discharge_tube.jpg 2x" data-file-width="3008" data-file-height="2008" /></span><figcaption>Tabung pembebas helium</figcaption></figure> <p><b>Helium</b> adalah <a href="/wiki/Unsur_kimia" title="Unsur kimia">unsur kimia</a> dengan <a href="/wiki/Lambang_unsur" title="Lambang unsur">lambang</a> <b>He</b> dan <a href="/wiki/Nomor_atom" title="Nomor atom">nomor atom</a> 2. Helium adalah bahan kimia tak berwarna, tak berbau, tak berasa, tak beracun, <a href="/wiki/Monoatomik" class="mw-redirect" title="Monoatomik">monoatomik</a> <a href="/wiki/Inert" class="mw-redirect" title="Inert">inert</a> dan merupakan <a href="/wiki/Gas_mulia" title="Gas mulia">gas mulia</a> pertama dalam <a href="/wiki/Tabel_periodik" title="Tabel periodik">tabel periodik</a>.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> Titik <a href="/wiki/Titik_lebur" title="Titik lebur">lebur</a> dan <a href="/wiki/Titik_didih" title="Titik didih">didihnya</a> adalah yang paling rendah dibandingkan unsur-unsur lainnya dan hanya terdapat dalam bentuk <a href="/wiki/Gas" title="Gas">gas</a> kecuali dalam kondisi ekstrem.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p><p>Helium pertama kali ditemukan pada tahun 1868 oleh astronom Prancis <a href="/wiki/Pierre_Janssen" class="mw-redirect" title="Pierre Janssen">Pierre Janssen</a>, yang <a href="/wiki/Penemuan_unsur_kimia" title="Penemuan unsur kimia">pertama kali</a> mendeteksi zat sebagai tanda <a href="/wiki/Spektroskopi" title="Spektroskopi">garis spektrum</a> kuning tak diketahui dalam cahaya dari <a href="/wiki/Gerhana_matahari" title="Gerhana matahari">gerhana matahari</a>.<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> Pada tahun 1903, cadangan helium yang besar ditemukan dalam <a href="/w/index.php?title=Ladang_gas_alam&action=edit&redlink=1" class="new" title="Ladang gas alam (halaman belum tersedia)">ladang gas alam</a> di Amerika Serikat, yang dikenal sebagai pemasok gas terbesar.<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> Helium digunakan dalam <a href="/wiki/Kriogenik" title="Kriogenik">kriogenik</a>,<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> sistem pernapasan laut-dalam,<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> untuk mendinginkan <a href="/w/index.php?title=Magnet_superkonduksi&action=edit&redlink=1" class="new" title="Magnet superkonduksi (halaman belum tersedia)">magnet superkonduktor</a>, dan dalam <a href="/wiki/Penanggalan_Helium" class="mw-redirect" title="Penanggalan Helium">penanggalan helium</a>,<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> untuk pengisi <a href="/wiki/Balon" title="Balon">balon</a> udara,<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> sebagai pengangkat <a href="/wiki/Kapal_udara" title="Kapal udara">kapal udara</a>,<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> dan sebagai gas pelindung untuk penggunaan industri seperti <a href="/w/index.php?title=Arc_welding&action=edit&redlink=1" class="new" title="Arc welding (halaman belum tersedia)">pengelasan</a> dan pengembangan wafer <a href="/wiki/Silikon" title="Silikon">silikon</a>.<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> Menghirup <a href="/wiki/Volume" title="Volume">sedikit</a> gas ini akan mengubah sementara timbre dan kualitas suara manusia.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> Perilaku fasa dua fluida helium-4 cair, helium I dan helium II, penting bagi peneliti yang mempelajari <a href="/wiki/Mekanika_kuantum" title="Mekanika kuantum">mekanika kuantum</a> dan terutama fenomena <a href="/w/index.php?title=Superfluiditas&action=edit&redlink=1" class="new" title="Superfluiditas (halaman belum tersedia)">superfluiditas</a>,<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> dan hal tersebut tampak pada efek bahwa pada temperatur hampir <a href="/wiki/Nol_mutlak" title="Nol mutlak">nol mutlak</a>, materi mengalami <a href="/wiki/Superkonduktivitas" title="Superkonduktivitas">superkonduktivitas</a>.<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> </p><p>Helium adalah unsur kedua terringan dan merupakan unsur kedua paling melimpah yang teramati di alam semesta.<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> Sebagian besar helium terbentuk selama Ledakan Dahsyat, tetapi helium baru terbentuk sebagai hasil fusi nuklir hidrogen di dalam bintang.<sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> Di bumi, helium relatif langka dan tercipta dari peluruhan alami beberapa unsur radioaktif<sup id="cite_ref-33" class="reference"><a href="#cite_note-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> karena partikel alfa yang dipancarkan mengandung inti helium. Helium radiogenik terperangkap dalam gas alam pada konsentrasi sampai dengan tujuh persen volume,<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> yang diekstraksi secara komersial dengan cara proses pemisahan temperatur rendah yang disebut distilasi fraksi.<sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Peran_biologis">Peran biologis</h2></div> <p><a href="/wiki/Hidrogen" title="Hidrogen">Hidrogen</a> adalah unsur esensial bagi kehidupan. Ia ada dalam air dan dalam hampir semua molekul makhluk hidup. Namun, hidrogen sebagai unsur maupun molekul diatomiknya tidak memainkan peran aktif tertentu. Ia berada dalam ikatan dengan atom <a href="/wiki/Karbon" title="Karbon">karbon</a> dan <a href="/wiki/Oksigen" title="Oksigen">oksigen</a>, sementara kimia dalam kehidupan lebih menekankan pada lokus-lokus aktif yang melibatkan, misalnya, <a href="/wiki/Oksigen" title="Oksigen">oksigen</a>, <a href="/wiki/Nitrogen" title="Nitrogen">nitrogen</a>, dan <a href="/wiki/Fosforus" title="Fosforus">fosforus</a>.<sup id="cite_ref-36" class="reference"><a href="#cite_note-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Helium" title="Helium">Helium</a> tidak diketahui memiliki peran biologis. Helium tak beracun.<sup id="cite_ref-37" class="reference"><a href="#cite_note-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Tabel_unsur">Tabel unsur</h2></div> <table class="collapsible uncollapsed" border="0" cellpadding="0" cellspacing="1" style="table-layout:fixed; background:#f8f8f8; border:1px solid #a9a9a9; width:100%; max-width:1800px; margin:0 auto; padding:2px; vertical-align:top; ;"> <tbody><tr> <th colspan="19" style="background:#d8d8d8; padding:2px 4px;"><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 navbar-collapse navbar-mini"><ul><li class="nv-lihat"><a href="/wiki/Templat:Tabel_periodik_(periode_1)" title="Templat:Tabel periodik (periode 1)"><abbr title="Lihat templat ini">l</abbr></a></li><li class="nv-bicara"><a href="/w/index.php?title=Pembicaraan_Templat:Tabel_periodik_(periode_1)&action=edit&redlink=1" class="new" title="Pembicaraan Templat:Tabel periodik (periode 1) (halaman belum tersedia)"><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_(periode_1)&action=edit"><abbr title="Sunting templat ini">s</abbr></a></li></ul></div><div class="navbar-ct-mini"><a class="mw-selflink selflink">Periode 1</a> dalam <a href="/wiki/Tabel_periodik" title="Tabel periodik">tabel periodik</a></div> </th></tr> <tr style="background:#e8e8e8"> <th> </th> <th><a href="/wiki/Logam_alkali" title="Logam alkali">1</a> </th> <th><a href="/wiki/Logam_alkali_tanah" title="Logam alkali tanah">2</a> </th> <th><a href="/wiki/Unsur_golongan_3" title="Unsur golongan 3">3</a> </th> <th><a href="/wiki/Unsur_golongan_4" title="Unsur golongan 4">4</a> </th> <th><a href="/wiki/Unsur_golongan_5" title="Unsur golongan 5">5</a> </th> <th><a href="/wiki/Unsur_golongan_6" title="Unsur golongan 6">6</a> </th> <th><a href="/wiki/Unsur_golongan_7" title="Unsur golongan 7">7</a> </th> <th><a href="/wiki/Unsur_golongan_8" title="Unsur golongan 8">8</a> </th> <th><a href="/wiki/Unsur_golongan_9" title="Unsur golongan 9">9</a> </th> <th><a href="/wiki/Unsur_golongan_10" title="Unsur golongan 10">10</a> </th> <th><a href="/wiki/Unsur_golongan_11" title="Unsur golongan 11">11</a> </th> <th><a href="/wiki/Unsur_golongan_12" title="Unsur golongan 12">12</a> </th> <th><a href="/wiki/Golongan_boron" title="Golongan boron">13</a> </th> <th><a href="/wiki/Golongan_karbon" title="Golongan karbon">14</a> </th> <th><a href="/wiki/Unsur_golongan_15" class="mw-redirect" title="Unsur golongan 15">15</a> </th> <th><a href="/wiki/Unsur_golongan_16" class="mw-redirect" title="Unsur golongan 16">16</a> </th> <th><a href="/wiki/Halogen" title="Halogen">17</a> </th> <th><a href="/wiki/Gas_mulia" title="Gas mulia">18</a> </th></tr> <tr> <th colspan="3" style="text-align:left; line-height:100%;"><small><a href="/wiki/Golongan_tabel_periodik" title="Golongan tabel periodik">Golongan</a> →</small> </th></tr> <tr> <th colspan="3" style="text-align:left; line-height:100%;"><small>↓ <a href="/wiki/Periode_tabel_periodik" title="Periode tabel periodik">Periode</a></small> </th></tr> <tr> <th><a class="mw-selflink selflink">1</a> </th> <td><div title="Hidrogen: diatomic nonmetal; primordial; gas" style="text-align:center; overflow:hidden; vertical-align:bottom; line-height:1.1em; padding:0 0 2px 0; background:#e7ff8f; border-top:2px solid #8811ff; border-bottom:2px solid #8811ff;"><div style="height:2.2em; line-height:1.1em; font-size:85%; vertical-align:top;">Hidrogen</div><div style="color:#ff0000;">1</div><div><a href="/wiki/Hidrogen" title="Hidrogen">H</a></div></div> </td> <td colspan="16"> </td> <td><div title="Helium: noble gas; primordial; gas" style="text-align:center; overflow:hidden; vertical-align:bottom; line-height:1.1em; padding:0 0 2px 0; background:#c0ffff; border-top:2px solid #8811ff; border-bottom:2px solid #8811ff;"><div style="height:2.2em; line-height:1.1em; font-size:85%; vertical-align:top;">Helium</div><div style="color:#ff0000;">2</div><div><a href="/wiki/Helium" title="Helium">He</a></div></div> </td></tr> <tr> <td colspan="19" style="height:0.5em;"> </td></tr> <tr> <td colspan="19"> <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;"> <tbody><tr> <td> <table style="width:100%;"> <tbody><tr> <td style="width:12%; padding:0 0.5em; color:#000000; background:#e0e0e0;">hitam=<a href="/wiki/Padat" title="Padat"><span style="color:#000000">padat</span></a> </td> <td style="width:12%; padding:0 0.5em; color:#008000; background:#e0e0e0;">hijau=<a href="/wiki/Cair" class="mw-redirect" title="Cair"><span style="color:#008000">cair</span></a> </td> <td style="width:12%; padding:0 0.5em; color:#ff0000; background:#e0e0e0;">merah=<a href="/wiki/Gas" title="Gas"><span style="color:#ff0000">gas</span></a> </td> <td style="width:12%; padding:0 0.5em; color:#696969; background:#e0e0e0;">abu-abu=tidak diketahui </td> <td style="width:1em; text-align:left; padding-right:0.5em;"><span class="nowrap"></span> </td></tr></tbody></table> </td></tr> <tr> <td> <table style="width:100%;"> <tbody><tr> <td style="width:12%; border-top:2px solid #8811ff; border-bottom:2px solid #8811ff; background:#e0e0e0;"><a href="/wiki/Unsur_primordial" class="mw-redirect" title="Unsur primordial">Primordial</a> </td> <td style="width:12%; border-top:2px dashed #773300; border-bottom:2px dashed #773300; background:#e0e0e0;"><a href="/wiki/Radioisotop_renik" title="Radioisotop renik"><span class="nowrap">Hasil peluruhan</span></a> </td> <td style="width:12%; border-top:2px dotted #4499ff; border-bottom:2px dotted #4499ff; background:#e0e0e0;"><a href="/wiki/Unsur_sintetis" class="mw-redirect" title="Unsur sintetis">Sintetis</a> </td> <td style="width:1em; text-align:left; padding-right:0.5em;"><span class="nowrap"></span> </td></tr></tbody></table> </td></tr> <tr> <td> <table style="width:100%; table-layout:fixed; overflow:hidden;"> <tbody><tr> <td colspan="10" style="text-align:left;"> </td></tr> <tr> <td colspan="6" style="padding:0 1px; background:#e0e0e0;"><a href="/wiki/Logam" title="Logam">Logam</a> </td> <td rowspan="2" style="padding:0 1px; background:#cccc99;"><a href="/wiki/Metaloid" title="Metaloid">Metaloid</a> </td> <td colspan="3" style="padding:0 1px; background:#e0e0e0;"><a href="/wiki/Nonlogam" title="Nonlogam">Nonlogam</a> </td></tr> <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_pasca_transisi" class="mw-redirect" title="Logam pasca transisi">Logam pasca-transisi</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></tr> </tbody></table> </td></tr> </tbody></table> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Referensi">Referensi</h2></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 reflist-columns-2" style=""> <ol class="references"> <li id="cite_note-iupac-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-iupac_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-iupac_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://old.iupac.org/reports/periodic_table/">"International Union of Pure and Applied Chemistry > Periodic Table of the Elements"</a>. 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Diakses tanggal <span class="nowrap">2008-07-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Popular+Science&rft.atitle=The+Return+of+the+Blimp&rft.date=2008-07-10&rft.au=Jiwatram%2C+Jaya&rft_id=http%3A%2F%2Fwww.popsci.com%2Fmilitary-aviation-space%2Farticle%2F2008-07%2Freturn-blimp&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-27">^</a></b></span> <span class="reference-text"><cite class="citation journal">"When good GTAW arcs drift; drafty conditions are bad for welders and their GTAW arcs". <i>Welding Design & Fabrication</i>. 2005-02-01.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Welding+Design+%26+Fabrication&rft.atitle=When+good+GTAW+arcs+drift%3B+drafty+conditions+are+bad+for+welders+and+their+GTAW+arcs.&rft.date=2005-02-01&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-28">^</a></b></span> <span class="reference-text"><cite class="citation web">Montgomery, Craig (2006-09-04). <a rel="nofollow" class="external text" href="http://www.sciam.com/article.cfm?id=why-does-inhaling-helium">"Why does inhaling helium make one's voice sound strange?"</a>. <i>Scientific American</i><span class="reference-accessdate">. Diakses tanggal <span class="nowrap">2008-07-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Scientific+American&rft.atitle=Why+does+inhaling+helium+make+one%27s+voice+sound+strange%3F&rft.date=2006-09-04&rft.au=Montgomery%2C+Craig&rft_id=http%3A%2F%2Fwww.sciam.com%2Farticle.cfm%3Fid%3Dwhy-does-inhaling-helium&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-29"><span class="mw-cite-backlink"><b><a href="#cite_ref-29">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="https://www.sciencedaily.com/releases/2004/09/040903085531.htm">"Probable Discovery Of A New, Supersolid, Phase Of Matter"</a>. Science Daily. 2004-09-03<span class="reference-accessdate">. Diakses tanggal <span class="nowrap">2008-07-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Probable+Discovery+Of+A+New%2C+Supersolid%2C+Phase+Of+Matter&rft.pub=Science+Daily&rft.date=2004-09-03&rft_id=http%3A%2F%2Fwww.sciencedaily.com%2Freleases%2F2004%2F09%2F040903085531.htm&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-30"><span class="mw-cite-backlink"><b><a href="#cite_ref-30">^</a></b></span> <span class="reference-text"><cite class="citation news">Browne, Malcolm W. (1979-08-21). "Scientists See Peril In Wasting Helium; Scientists See Peril in Waste of Helium". <i>The New York Times</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+New+York+Times&rft.atitle=Scientists+See+Peril+In+Wasting+Helium%3B+Scientists+See+Peril+in+Waste+of+Helium&rft.date=1979-08-21&rft.au=Browne%2C+Malcolm+W.&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-31"><span class="mw-cite-backlink"><b><a href="#cite_ref-31">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://www.webelements.com/helium/geology.html">"Helium: geological information"</a>. <i>WebElements</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=WebElements&rft.atitle=Helium%3A+geological+information&rft_id=http%3A%2F%2Fwww.webelements.com%2Fhelium%2Fgeology.html&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-32">^</a></b></span> <span class="reference-text"><cite class="citation web">Cox, Tony (1990-02-03). <a rel="nofollow" class="external text" href="http://www.newscientist.com/article/mg12517027.000-origin-of-the-chemical-elements.html">"Origin of the chemical elements"</a>. <i>New Scientist</i><span class="reference-accessdate">. Diakses tanggal <span class="nowrap">2008-07-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=New+Scientist&rft.atitle=Origin+of+the+chemical+elements&rft.date=1990-02-03&rft.au=Cox%2C+Tony&rft_id=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fmg12517027.000-origin-of-the-chemical-elements.html&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-33"><span class="mw-cite-backlink"><b><a href="#cite_ref-33">^</a></b></span> <span class="reference-text"><cite class="citation news">"Helium supply deflated: production shortages mean some industries and partygoers must squeak by". Houston Chronicle. 2006-11-05.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Helium+supply+deflated%3A+production+shortages+mean+some+industries+and+partygoers+must+squeak+by.&rft.date=2006-11-05&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-34"><span class="mw-cite-backlink"><b><a href="#cite_ref-34">^</a></b></span> <span class="reference-text"><cite class="citation web">Brown, David (2008-02-02). <a rel="nofollow" class="external text" href="http://www.aapg.org/explorer/2008/02feb/helium.cfm">"Helium a New Target in New Mexico"</a>. American Association of Petroleum Geologists<span class="reference-accessdate">. Diakses tanggal <span class="nowrap">2008-07-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Helium+a+New+Target+in+New+Mexico&rft.pub=American+Association+of+Petroleum+Geologists&rft.date=2008-02-02&rft.au=Brown%2C+David&rft_id=http%3A%2F%2Fwww.aapg.org%2Fexplorer%2F2008%2F02feb%2Fhelium.cfm&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-35"><span class="mw-cite-backlink"><b><a href="#cite_ref-35">^</a></b></span> <span class="reference-text"><cite class="citation news">Voth, Greg (2006-12-01). "Where Do We Get the Helium We Use?". The Science Teacher.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Where+Do+We+Get+the+Helium+We+Use%3F&rft.date=2006-12-01&rft.au=Voth%2C+Greg&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-36"><span class="mw-cite-backlink"><b><a href="#cite_ref-36">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://www.rsc.org/periodic-table/element/1/hydrogen">"Hydrogen"</a>. <i>Periodic Table</i>. Royal Society of Chemistry<span class="reference-accessdate">. Diakses tanggal <span class="nowrap">2016-02-11</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Periodic+Table&rft.atitle=Hydrogen&rft_id=http%3A%2F%2Fwww.rsc.org%2Fperiodic-table%2Felement%2F1%2Fhydrogen&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-37"><span class="mw-cite-backlink"><b><a href="#cite_ref-37">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://www.rsc.org/periodic-table/element/2/helium">"Helium"</a>. <i>Periodic Table</i>. Royal Society of Chemistry<span class="reference-accessdate">. Diakses tanggal <span class="nowrap">2016-02-11</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Periodic+Table&rft.atitle=Helium&rft_id=http%3A%2F%2Fwww.rsc.org%2Fperiodic-table%2Felement%2F2%2Fhelium&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Lihat_juga">Lihat juga</h2></div> <ul><li><a href="/wiki/Periode_tabel_periodik" title="Periode tabel periodik">Periode tabel periodik</a> <ul><li><a href="/wiki/Unsur_periode_2" title="Unsur periode 2">Unsur periode 2</a></li> <li><a href="/wiki/Unsur_periode_3" title="Unsur periode 3">Unsur periode 3</a></li> <li><a href="/wiki/Unsur_periode_4" title="Unsur periode 4">Unsur periode 4</a></li> <li><a href="/wiki/Unsur_periode_5" title="Unsur periode 5">Unsur periode 5</a></li> <li><a href="/wiki/Unsur_periode_6" title="Unsur periode 6">Unsur periode 6</a></li> <li><a href="/wiki/Unsur_periode_7" title="Unsur periode 7">Unsur periode 7</a></li> <li><a href="/wiki/Tabel_periodik_perluasan" title="Tabel periodik perluasan">Unsur periode 8</a></li></ul></li> <li><a href="/wiki/Golongan_tabel_periodik" title="Golongan tabel periodik">Golongan tabel periodik</a></li> <li><a href="/wiki/Tabel_periodik" title="Tabel periodik">Tabel periodik</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Bacaan_tambahan">Bacaan tambahan</h2></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 metadata side-box-right"><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="side-box-flex"> <div class="side-box-image"><span typeof="mw:File"><span><img alt="Book icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Office-book.svg/30px-Office-book.svg.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Office-book.svg/45px-Office-book.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Office-book.svg/60px-Office-book.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div> <div class="side-box-text plainlist"><i><b><a href="/w/index.php?title=Wikipedia:Buku/Unsur-unsur_Periode_1&action=edit&redlink=1" class="new" title="Wikipedia:Buku/Unsur-unsur Periode 1 (halaman belum tersedia)">Buku: Unsur-unsur Periode 1</a></b></i></div></div> <div class="side-box-abovebelow"><small><a href="/wiki/Wikipedia:Books" class="mw-redirect" title="Wikipedia:Books">Buku Wikipedia</a> adalah koleksi artikel yang bisa diunduh atau dipesan dalam bentuk cetak.</small></div> </div> <ul><li><cite id="CITEREFBloch2006" class="citation book">Bloch, D. R. (2006). <a rel="nofollow" class="external text" href="http://books.google.com/?id=yVPcSIn5xjAC"><i>Organic Chemistry Demystified</i></a>. McGraw-Hill Professional. <a href="/wiki/International_Standard_Book_Number" class="mw-redirect" title="International Standard Book Number">ISBN</a> <a href="/wiki/Istimewa:Sumber_buku/0-07-145920-0" title="Istimewa:Sumber buku/0-07-145920-0">0-07-145920-0</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Organic+Chemistry+Demystified&rft.pub=McGraw-Hill+Professional&rft.date=2006&rft.isbn=0-07-145920-0&rft.au=Bloch%2C+D.+R.&rft_id=http%3A%2F%2Fbooks.google.com%2F%3Fid%3DyVPcSIn5xjAC&rfr_id=info%3Asid%2Fid.wikipedia.org%3AUnsur+periode+1" class="Z3988"><span style="display:none;"> </span></span></li></ul> <p class="mw-empty-elt"> </p> <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)"><small>(besar)</small></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 class="mw-selflink selflink">1</a> </td> <td title="Hidrogen, 1 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Hidrogen" title="Hidrogen"><span style="display:block">H</span></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"><span style="display:block">He</span></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"><span style="display:block">Li</span></a> </td> <td title="Berilium, 4 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Berilium" title="Berilium"><span style="display:block">Be</span></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"><span style="display:block">B</span></a> </td> <td title="Karbon, 6 (polyatomic nonmetal)" style="text-align:center; background:#a1ffc3; border:none; ;"><a href="/wiki/Karbon" title="Karbon"><span style="display:block">C</span></a> </td> <td title="Nitrogen, 7 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Nitrogen" title="Nitrogen"><span style="display:block">N</span></a> </td> <td title="Oksigen, 8 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Oksigen" title="Oksigen"><span style="display:block">O</span></a> </td> <td title="Fluorin, 9 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Fluorin" title="Fluorin"><span style="display:block">F</span></a> </td> <td title="Neon, 10 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Neon" title="Neon"><span style="display:block">Ne</span></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"><span style="display:block">Na</span></a> </td> <td title="Magnesium, 12 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Magnesium" title="Magnesium"><span style="display:block">Mg</span></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"><span style="display:block">Al</span></a> </td> <td title="Silikon, 14 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Silikon" title="Silikon"><span style="display:block">Si</span></a> </td> <td title="Fosforus, 15 (polyatomic nonmetal)" style="text-align:center; background:#a1ffc3; border:none; ;"><a href="/wiki/Fosforus" title="Fosforus"><span style="display:block">P</span></a> </td> <td title="Belerang, 16 (polyatomic nonmetal)" style="text-align:center; background:#a1ffc3; border:none; ;"><a href="/wiki/Belerang" title="Belerang"><span style="display:block">S</span></a> </td> <td title="Klorin, 17 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Klorin" title="Klorin"><span style="display:block">Cl</span></a> </td> <td title="Argon, 18 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Argon" title="Argon"><span style="display:block">Ar</span></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"><span style="display:block">K</span></a> </td> <td title="Kalsium, 20 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Kalsium" title="Kalsium"><span style="display:block">Ca</span></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"><span style="display:block">Sc</span></a> </td> <td title="Titanium, 22 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Titanium" title="Titanium"><span style="display:block">Ti</span></a> </td> <td title="Vanadium, 23 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Vanadium" title="Vanadium"><span style="display:block">V</span></a> </td> <td title="Kromium, 24 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Kromium" title="Kromium"><span style="display:block">Cr</span></a> </td> <td title="Mangan, 25 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Mangan" title="Mangan"><span style="display:block">Mn</span></a> </td> <td title="Besi, 26 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Besi" title="Besi"><span style="display:block">Fe</span></a> </td> <td title="Kobalt, 27 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Kobalt" title="Kobalt"><span style="display:block">Co</span></a> </td> <td title="Nikel, 28 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Nikel" title="Nikel"><span style="display:block">Ni</span></a> </td> <td title="Tembaga, 29 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Tembaga" title="Tembaga"><span style="display:block">Cu</span></a> </td> <td title="Seng, 30 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Seng" title="Seng"><span style="display:block">Zn</span></a> </td> <td title="Galium, 31 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Galium" title="Galium"><span style="display:block">Ga</span></a> </td> <td title="Germanium, 32 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Germanium" title="Germanium"><span style="display:block">Ge</span></a> </td> <td title="Arsen, 33 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Arsen" title="Arsen"><span style="display:block">As</span></a> </td> <td title="Selenium, 34 (polyatomic nonmetal)" style="text-align:center; background:#a1ffc3; border:none; ;"><a href="/wiki/Selenium" title="Selenium"><span style="display:block">Se</span></a> </td> <td title="Bromin, 35 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Bromin" title="Bromin"><span style="display:block">Br</span></a> </td> <td title="Kripton, 36 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Kripton" title="Kripton"><span style="display:block">Kr</span></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"><span style="display:block">Rb</span></a> </td> <td title="Stronsium, 38 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Stronsium" title="Stronsium"><span style="display:block">Sr</span></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"><span style="display:block">Y</span></a> </td> <td title="Zirkonium, 40 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Zirkonium" title="Zirkonium"><span style="display:block">Zr</span></a> </td> <td title="Niobium, 41 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Niobium" title="Niobium"><span style="display:block">Nb</span></a> </td> <td title="Molibdenum, 42 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Molibdenum" title="Molibdenum"><span style="display:block">Mo</span></a> </td> <td title="Teknesium, 43 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Teknesium" title="Teknesium"><span style="display:block">Tc</span></a> </td> <td title="Rutenium, 44 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Rutenium" title="Rutenium"><span style="display:block">Ru</span></a> </td> <td title="Rodium, 45 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Rodium" title="Rodium"><span style="display:block">Rh</span></a> </td> <td title="Paladium, 46 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Paladium" title="Paladium"><span style="display:block">Pd</span></a> </td> <td title="Perak, 47 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Perak" title="Perak"><span style="display:block">Ag</span></a> </td> <td title="Kadmium, 48 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Kadmium" title="Kadmium"><span style="display:block">Cd</span></a> </td> <td title="Indium, 49 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Indium" title="Indium"><span style="display:block">In</span></a> </td> <td title="Timah, 50 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Timah" title="Timah"><span style="display:block">Sn</span></a> </td> <td title="Antimon, 51 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Antimon" title="Antimon"><span style="display:block">Sb</span></a> </td> <td title="Telurium, 52 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Telurium" title="Telurium"><span style="display:block">Te</span></a> </td> <td title="Iodin, 53 (diatomic nonmetal)" style="text-align:center; background:#e7ff8f; border:none; ;"><a href="/wiki/Iodin" title="Iodin"><span style="display:block">I</span></a> </td> <td title="Xenon, 54 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Xenon" title="Xenon"><span style="display:block">Xe</span></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"><span style="display:block">Cs</span></a> </td> <td title="Barium, 56 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Barium" title="Barium"><span style="display:block">Ba</span></a> </td> <td title="Lantanum, 57 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Lantanum" title="Lantanum"><span style="display:block">La</span></a> </td> <td title="Serium, 58 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Serium" title="Serium"><span style="display:block">Ce</span></a> </td> <td title="Praseodimium, 59 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Praseodimium" title="Praseodimium"><span style="display:block">Pr</span></a> </td> <td title="Neodimium, 60 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Neodimium" title="Neodimium"><span style="display:block">Nd</span></a> </td> <td title="Prometium, 61 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Prometium" title="Prometium"><span style="display:block">Pm</span></a> </td> <td title="Samarium, 62 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Samarium" title="Samarium"><span style="display:block">Sm</span></a> </td> <td title="Europium, 63 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Europium" title="Europium"><span style="display:block">Eu</span></a> </td> <td title="Gadolinium, 64 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Gadolinium" title="Gadolinium"><span style="display:block">Gd</span></a> </td> <td title="Terbium, 65 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Terbium" title="Terbium"><span style="display:block">Tb</span></a> </td> <td title="Disprosium, 66 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Disprosium" title="Disprosium"><span style="display:block">Dy</span></a> </td> <td title="Holmium, 67 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Holmium" title="Holmium"><span style="display:block">Ho</span></a> </td> <td title="Erbium, 68 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Erbium" title="Erbium"><span style="display:block">Er</span></a> </td> <td title="Tulium, 69 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Tulium" title="Tulium"><span style="display:block">Tm</span></a> </td> <td title="Iterbium, 70 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Iterbium" title="Iterbium"><span style="display:block">Yb</span></a> </td> <td title="Lutesium, 71 (lanthanide)" style="text-align:center; background:#ffbfff; border:none; ;"><a href="/wiki/Lutesium" title="Lutesium"><span style="display:block">Lu</span></a> </td> <td title="Hafnium, 72 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Hafnium" title="Hafnium"><span style="display:block">Hf</span></a> </td> <td title="Tantalum, 73 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Tantalum" title="Tantalum"><span style="display:block">Ta</span></a> </td> <td title="Wolfram, 74 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Wolfram" title="Wolfram"><span style="display:block">W</span></a> </td> <td title="Renium, 75 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Renium" title="Renium"><span style="display:block">Re</span></a> </td> <td title="Osmium, 76 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Osmium" title="Osmium"><span style="display:block">Os</span></a> </td> <td title="Iridium, 77 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Iridium" title="Iridium"><span style="display:block">Ir</span></a> </td> <td title="Platina, 78 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Platina" title="Platina"><span style="display:block">Pt</span></a> </td> <td title="Emas, 79 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Emas" title="Emas"><span style="display:block">Au</span></a> </td> <td title="Raksa, 80 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Raksa" title="Raksa"><span style="display:block">Hg</span></a> </td> <td title="Talium, 81 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Talium" title="Talium"><span style="display:block">Tl</span></a> </td> <td title="Timbal, 82 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Timbal" title="Timbal"><span style="display:block">Pb</span></a> </td> <td title="Bismut, 83 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Bismut" title="Bismut"><span style="display:block">Bi</span></a> </td> <td title="Polonium, 84 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Polonium" title="Polonium"><span style="display:block">Po</span></a> </td> <td title="Astatin, 85 (metalloid)" style="text-align:center; background:#cccc99; border:none; ;"><a href="/wiki/Astatin" title="Astatin"><span style="display:block">At</span></a> </td> <td title="Radon, 86 (noble gas)" style="text-align:center; background:#c0ffff; border:none; ;"><a href="/wiki/Radon" title="Radon"><span style="display:block">Rn</span></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"><span style="display:block">Fr</span></a> </td> <td title="Radium, 88 (alkaline earth metal)" style="text-align:center; background:#ffdead; border:none; ;"><a href="/wiki/Radium" title="Radium"><span style="display:block">Ra</span></a> </td> <td title="Aktinium, 89 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Aktinium" title="Aktinium"><span style="display:block">Ac</span></a> </td> <td title="Torium, 90 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Torium" title="Torium"><span style="display:block">Th</span></a> </td> <td title="Protaktinium, 91 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Protaktinium" title="Protaktinium"><span style="display:block">Pa</span></a> </td> <td title="Uranium, 92 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Uranium" title="Uranium"><span style="display:block">U</span></a> </td> <td title="Neptunium, 93 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Neptunium" title="Neptunium"><span style="display:block">Np</span></a> </td> <td title="Plutonium, 94 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Plutonium" title="Plutonium"><span style="display:block">Pu</span></a> </td> <td title="Amerisium, 95 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Amerisium" title="Amerisium"><span style="display:block">Am</span></a> </td> <td title="Kurium, 96 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Kurium" title="Kurium"><span style="display:block">Cm</span></a> </td> <td title="Berkelium, 97 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Berkelium" title="Berkelium"><span style="display:block">Bk</span></a> </td> <td title="Kalifornium, 98 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Kalifornium" title="Kalifornium"><span style="display:block">Cf</span></a> </td> <td title="Einsteinium, 99 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Einsteinium" title="Einsteinium"><span style="display:block">Es</span></a> </td> <td title="Fermium, 100 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Fermium" title="Fermium"><span style="display:block">Fm</span></a> </td> <td title="Mendelevium, 101 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Mendelevium" title="Mendelevium"><span style="display:block">Md</span></a> </td> <td title="Nobelium, 102 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Nobelium" title="Nobelium"><span style="display:block">No</span></a> </td> <td title="Lawrensium, 103 (actinide)" style="text-align:center; background:#ff99cc; border:none; ;"><a href="/wiki/Lawrensium" title="Lawrensium"><span style="display:block">Lr</span></a> </td> <td title="Ruterfordium, 104 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Ruterfordium" title="Ruterfordium"><span style="display:block">Rf</span></a> </td> <td title="Dubnium, 105 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Dubnium" title="Dubnium"><span style="display:block">Db</span></a> </td> <td title="Seaborgium, 106 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Seaborgium" title="Seaborgium"><span style="display:block">Sg</span></a> </td> <td title="Bohrium, 107 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Bohrium" title="Bohrium"><span style="display:block">Bh</span></a> </td> <td title="Hasium, 108 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Hasium" title="Hasium"><span style="display:block">Hs</span></a> </td> <td title="Meitnerium, 109 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Meitnerium" title="Meitnerium"><span style="display:block">Mt</span></a> </td> <td title="Darmstadtium, 110 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Darmstadtium" title="Darmstadtium"><span style="display:block">Ds</span></a> </td> <td title="Roentgenium, 111 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Roentgenium" title="Roentgenium"><span style="display:block">Rg</span></a> </td> <td title="Kopernisium, 112 (transition metal)" style="text-align:center; background:#ffc0c0; border:none; ;"><a href="/wiki/Kopernisium" title="Kopernisium"><span style="display:block">Cn</span></a> </td> <td title="Nihonium, 113 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Nihonium" title="Nihonium"><span style="display:block">Nh</span></a> </td> <td title="Flerovium, 114 (post-transition metal)" style="text-align:center; background:#cccccc; border:none; ;"><a href="/wiki/Flerovium" title="Flerovium"><span style="display:block">Fl</span></a> </td> <td title="Moskovium, 115 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Moskovium" title="Moskovium"><span style="display:block">Mc</span></a> </td> <td title="Livermorium, 116 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Livermorium" title="Livermorium"><span style="display:block">Lv</span></a> </td> <td title="Tenesin, 117 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Tenesin" title="Tenesin"><span style="display:block">Ts</span></a> </td> <td title="Oganeson, 118 (unknown chemical properties)" style="text-align:center; background:#e8e8e8; border:none; ;"><a href="/wiki/Oganeson" title="Oganeson"><span style="display:block">Og</span></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<br />belum diketahui </td></tr> </tbody></table> </td></tr> </tbody></table> </td></tr></tbody></table>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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