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Dit is echter niet verplicht." class=""><span>Account aanmaken</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=Speciaal:Aanmelden&returnto=Periode-2-element" title="U wordt van harte uitgenodigd om aan te melden, maar dit is niet verplicht [o]" accesskey="o" class=""><span>Aanmelden</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="Meer opties" > <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="Persoonlijke hulpmiddelen" > <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">Persoonlijke hulpmiddelen</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Gebruikersmenu" > <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_nl.wikipedia.org&uselang=nl"><span>Doneren</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Speciaal:GebruikerAanmaken&returnto=Periode-2-element" title="Registreer u vooral en meld u aan. Dit is echter niet verplicht."><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Account aanmaken</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Speciaal:Aanmelden&returnto=Periode-2-element" title="U wordt van harte uitgenodigd om aan te melden, maar dit is niet verplicht [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Aanmelden</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"> Pagina's voor uitgelogde redacteuren <a href="/wiki/Help:Inleiding" aria-label="Meer leren over bewerken"><span>meer lezen</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/Speciaal:MijnBijdragen" title="Bijdragen IP-adres [y]" accesskey="y"><span>Bijdragen</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Speciaal:MijnOverleg" title="Overlegpagina van de anonieme gebruiker van dit IP-adres [n]" accesskey="n"><span>Overleg</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="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Periode-2-element</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="Ga naar een artikel in een andere taal. Beschikbaar in 52 talen" > <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-52" 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">52 talen</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_2" title="Elementos d'o periodo 2 – Aragonees" lang="an" hreflang="an" data-title="Elementos d'o periodo 2" data-language-autonym="Aragonés" data-language-local-name="Aragonees" 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_2_%E0%A4%A4%E0%A4%A4%E0%A5%8D%E0%A4%B5" title="आवर्त 2 तत्व – Angika" lang="anp" hreflang="anp" data-title="आवर्त 2 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%AB%D8%A7%D9%86%D9%8A%D8%A9" title="عناصر الدورة الثانية – Arabisch" lang="ar" hreflang="ar" data-title="عناصر الدورة الثانية" data-language-autonym="العربية" data-language-local-name="Arabisch" 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_2" title="Elementos del periodu 2 – Asturisch" lang="ast" hreflang="ast" data-title="Elementos del periodu 2" data-language-autonym="Asturianu" data-language-local-name="Asturisch" 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_ikinci_periodu" title="Dövri sistemin ikinci periodu – Azerbeidzjaans" lang="az" hreflang="az" data-title="Dövri sistemin ikinci periodu" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbeidzjaans" class="interlanguage-link-target"><span>Azərbaycanca</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_2_%E0%A4%A4%E0%A4%A4%E0%A5%8D%E0%A4%B5" title="पीरियड 2 तत्व – Bhojpuri" lang="bh" hreflang="bh" data-title="पीरियड 2 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%A6%E0%A7%8D%E0%A6%AC%E0%A6%BF%E0%A6%A4%E0%A7%80%E0%A6%AF%E0%A6%BC_%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="দ্বিতীয় পর্যায়ের মৌল – Bengaals" lang="bn" hreflang="bn" data-title="দ্বিতীয় পর্যায়ের মৌল" data-language-autonym="বাংলা" data-language-local-name="Bengaals" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Elements_del_per%C3%ADode_2" title="Elements del període 2 – Catalaans" lang="ca" hreflang="ca" data-title="Elements del període 2" data-language-autonym="Català" data-language-local-name="Catalaans" 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/2._perioda" title="2. perioda – Tsjechisch" lang="cs" hreflang="cs" data-title="2. perioda" data-language-autonym="Čeština" data-language-local-name="Tsjechisch" 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_2" title="Elfen cyfnod 2 – Welsh" lang="cy" hreflang="cy" data-title="Elfen cyfnod 2" 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_2-grundstof" title="Periode 2-grundstof – Deens" lang="da" hreflang="da" data-title="Periode 2-grundstof" data-language-autonym="Dansk" data-language-local-name="Deens" 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_zweiten_Periode" title="Chemische Elemente der zweiten Periode – Duits" lang="de" hreflang="de" data-title="Chemische Elemente der zweiten Periode" data-language-autonym="Deutsch" data-language-local-name="Duits" 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_2" title="Στοιχείο Περιόδου 2 – Grieks" lang="el" hreflang="el" data-title="Στοιχείο Περιόδου 2" data-language-autonym="Ελληνικά" data-language-local-name="Grieks" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Period_2_element" title="Period 2 element – Engels" lang="en" hreflang="en" data-title="Period 2 element" data-language-autonym="English" data-language-local-name="Engels" 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_2" title="Elemento de periodo 2 – Esperanto" lang="eo" hreflang="eo" data-title="Elemento de periodo 2" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Elementos_del_periodo_2" title="Elementos del periodo 2 – Spaans" lang="es" hreflang="es" data-title="Elementos del periodo 2" data-language-autonym="Español" data-language-local-name="Spaans" 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/2._periodoko_elementu" title="2. periodoko elementu – Baskisch" lang="eu" hreflang="eu" data-title="2. periodoko elementu" data-language-autonym="Euskara" data-language-local-name="Baskisch" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B9%D9%86%D8%B5%D8%B1_%D8%AF%D9%88%D8%B1%D9%87_%DB%B2" title="عنصر دوره ۲ – Perzisch" lang="fa" hreflang="fa" data-title="عنصر دوره ۲" data-language-autonym="فارسی" data-language-local-name="Perzisch" 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_2_alkuaine" title="Jakson 2 alkuaine – Fins" lang="fi" hreflang="fi" data-title="Jakson 2 alkuaine" data-language-autonym="Suomi" data-language-local-name="Fins" 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_2_du_tableau_p%C3%A9riodique" title="Période 2 du tableau périodique – Frans" lang="fr" hreflang="fr" data-title="Période 2 du tableau périodique" data-language-autonym="Français" data-language-local-name="Frans" 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-2-Element" title="Periode-2-Element – Noord-Fries" lang="frr" hreflang="frr" data-title="Periode-2-Element" data-language-autonym="Nordfriisk" data-language-local-name="Noord-Fries" 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_2_(periodyk_systeem)" title="Perioade 2 (periodyk systeem) – Fries" lang="fy" hreflang="fy" data-title="Perioade 2 (periodyk systeem)" data-language-autonym="Frysk" data-language-local-name="Fries" 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_2" title="Elementos de periodo 2 – Interlingua" lang="ia" hreflang="ia" data-title="Elementos de periodo 2" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Unsur_periode_2" title="Unsur periode 2 – Indonesisch" lang="id" hreflang="id" data-title="Unsur periode 2" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesisch" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Elementi_del_periodo_2" title="Elementi del periodo 2 – Italiaans" lang="it" hreflang="it" data-title="Elementi del periodo 2" data-language-autonym="Italiano" data-language-local-name="Italiaans" 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%AC2%E5%91%A8%E6%9C%9F%E5%85%83%E7%B4%A0" title="第2周期元素 – Japans" lang="ja" hreflang="ja" data-title="第2周期元素" data-language-autonym="日本語" data-language-local-name="Japans" 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%9B%E1%83%94%E1%83%9D%E1%83%A0%E1%83%94_%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 მეორე პერიოდი – Georgisch" lang="ka" hreflang="ka" data-title="ელემენტთა პერიოდული სისტემის მეორე პერიოდი" data-language-autonym="ქართული" data-language-local-name="Georgisch" 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/2%EC%A3%BC%EA%B8%B0_%EC%9B%90%EC%86%8C" title="2주기 원소 – Koreaans" lang="ko" hreflang="ko" data-title="2주기 원소" data-language-autonym="한국어" data-language-local-name="Koreaans" 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_secundae" title="Elementum periodi secundae – Latijn" lang="la" hreflang="la" data-title="Elementum periodi secundae" data-language-autonym="Latina" data-language-local-name="Latijn" 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_2" title="Element del period 2 – Lombardisch" lang="lmo" hreflang="lmo" data-title="Element del period 2" data-language-autonym="Lombard" data-language-local-name="Lombardisch" 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/Antrojo_periodo_elementas" title="Antrojo periodo elementas – Litouws" lang="lt" hreflang="lt" data-title="Antrojo periodo elementas" data-language-autonym="Lietuvių" data-language-local-name="Litouws" 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/II_%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="II периода на периодниот систем – Macedonisch" lang="mk" hreflang="mk" data-title="II периода на периодниот систем" data-language-autonym="Македонски" data-language-local-name="Macedonisch" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Unsur_kala_2" title="Unsur kala 2 – Maleis" lang="ms" hreflang="ms" data-title="Unsur kala 2" data-language-autonym="Bahasa Melayu" data-language-local-name="Maleis" class="interlanguage-link-target"><span>Bahasa Melayu</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_2_%E0%A8%A4%E0%A9%B1%E0%A8%A4" title="ਪੀਰਡ 2 ਤੱਤ – Punjabi" lang="pa" hreflang="pa" data-title="ਪੀਰਡ 2 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_drugiego_okresu" title="Pierwiastki drugiego okresu – Pools" lang="pl" hreflang="pl" data-title="Pierwiastki drugiego okresu" data-language-autonym="Polski" data-language-local-name="Pools" 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_2_(qu%C3%ADmica)" title="Período 2 (química) – Portugees" lang="pt" hreflang="pt" data-title="Período 2 (química)" data-language-autonym="Português" data-language-local-name="Portugees" 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_2" title="Elementele perioadei 2 – Roemeens" lang="ro" hreflang="ro" data-title="Elementele perioadei 2" data-language-autonym="Română" data-language-local-name="Roemeens" 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%92%D1%82%D0%BE%D1%80%D0%BE%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="Второй период периодической системы – Russisch" lang="ru" hreflang="ru" data-title="Второй период периодической системы" data-language-autonym="Русский" data-language-local-name="Russisch" 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_2._periode" title="Elementi 2. periode – Servo-Kroatisch" lang="sh" hreflang="sh" data-title="Elementi 2. periode" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Servo-Kroatisch" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Period_2_element" title="Period 2 element – Simple English" lang="en-simple" hreflang="en-simple" data-title="Period 2 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/2._peri%C3%B3da" title="2. perióda – Slowaaks" lang="sk" hreflang="sk" data-title="2. perióda" data-language-autonym="Slovenčina" data-language-local-name="Slowaaks" 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_2._periode" title="Element 2. periode – Sloveens" lang="sl" hreflang="sl" data-title="Element 2. periode" data-language-autonym="Slovenščina" data-language-local-name="Sloveens" 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/2._%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="2. периода хемијских елемената – Servisch" lang="sr" hreflang="sr" data-title="2. периода хемијских елемената" data-language-autonym="Српски / srpski" data-language-local-name="Servisch" 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_2_%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 2 தனிமங்கள் – Tamil" lang="ta" hreflang="ta" data-title="கிடைக்குழு 2 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_2_%E0%B0%AE%E0%B1%82%E0%B0%B2%E0%B0%95%E0%B0%82" title="పీరియడ్ 2 మూలకం – Telugu" lang="te" hreflang="te" data-title="పీరియడ్ 2 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_2" title="ธาตุคาบ 2 – Thai" lang="th" hreflang="th" data-title="ธาตุคาบ 2" 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/2._periyot_elementi" title="2. periyot elementi – Turks" lang="tr" hreflang="tr" data-title="2. periyot elementi" data-language-autonym="Türkçe" data-language-local-name="Turks" 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_2_%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 2 періодичної системи елементів – Oekraïens" lang="uk" hreflang="uk" data-title="Період 2 періодичної системи елементів" data-language-autonym="Українська" data-language-local-name="Oekraïens" 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_2" title="Nguyên tố chu kỳ 2 – Vietnamees" lang="vi" hreflang="vi" data-title="Nguyên tố chu kỳ 2" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamees" 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-2-element" title="Periode-2-element – West-Vlaams" lang="vls" hreflang="vls" data-title="Periode-2-element" data-language-autonym="West-Vlams" data-language-local-name="West-Vlaams" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%AC%AC2%E5%91%A8%E6%9C%9F%E5%85%83%E7%B4%A0" title="第2周期元素 – Chinees" lang="zh" hreflang="zh" data-title="第2周期元素" data-language-autonym="中文" data-language-local-name="Chinees" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%AC%AC2%E9%80%B1%E6%9C%9F%E5%85%83%E7%B4%A0" title="第2週期元素 – Kantonees" lang="yue" hreflang="yue" data-title="第2週期元素" data-language-autonym="粵語" data-language-local-name="Kantonees" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q207712#sitelinks-wikipedia" title="Taalkoppelingen bewerken" class="wbc-editpage">Koppelingen bewerken</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Naamruimten"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Periode-2-element" title="Inhoudspagina bekijken [c]" accesskey="c"><span>Artikel</span></a></li><li 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<div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Afdrukken/exporteren </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Speciaal:Boek&bookcmd=book_creator&referer=Periode-2-element"><span>Boek aanmaken</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Speciaal:DownloadAsPdf&page=Periode-2-element&action=show-download-screen"><span>Downloaden als PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Periode-2-element&printable=yes" title="Printvriendelijke versie van deze pagina [p]" accesskey="p"><span>Afdrukversie</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In andere projecten </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Periodic_table_row_2" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q207712" title="Koppeling naar item in verbonden gegevensrepository [g]" accesskey="g"><span>Wikidata-item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Paginahulpmiddelen"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Uiterlijk"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Uiterlijk</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">naar zijbalk verplaatsen</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">verbergen</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Uit Wikipedia, de vrije encyclopedie</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="nl" dir="ltr"><p>Een <b>periode-2-element</b> is een <a href="/wiki/Chemisch_element" title="Chemisch element">chemisch element</a> in de tweede regel (of <i>periode</i>) van het <a href="/wiki/Periodiek_systeem" title="Periodiek systeem">periodiek systeem der elementen</a>. Deze elementen kenmerken zich doordat de 1s-<a href="/wiki/Elektronenschil" title="Elektronenschil">schil</a> geheel met <a href="/wiki/Elektron" title="Elektron">elektronen</a> gevuld is. Van het begin tot het einde van deze periode worden de 2s- en 2p-schil opgevuld. Bij <a href="/wiki/Lithium_(element)" title="Lithium (element)">lithium</a> bevat de 2s-schil één elektron en deze schil bevat bij <a href="/wiki/Beryllium" title="Beryllium">beryllium</a> twee elektronen. Vanaf <a href="/wiki/Boor_(element)" title="Boor (element)">boor</a> tot en met <a href="/wiki/Neon_(element)" title="Neon (element)">neon</a> wordt de 2p-schil systematisch opgevuld. </p><p>De elementen in de tweede periode zijn in het periodiek systeem hieronder gekleurd. </p> <table style="font-size:85%; padding:0; border-collapse:collapse; text-align:center" border="0" align="center" class="vatop"> <tbody><tr> <td> </td> <th><a href="/wiki/Alkalimetaal" title="Alkalimetaal">1<br />Ia</a></th> <th colspan="16"></th> <th><a href="/wiki/Edelgas" title="Edelgas">18<br />0</a> </th></tr> <tr> <th style="vertical-align: middle;"><a href="/wiki/Periode-1-element" title="Periode-1-element">1</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999">1<br /><a href="/wiki/Waterstof_(element)" title="Waterstof (element)">H</a> </td> <th style="vertical-align: middle;"><a href="/wiki/Aardalkalimetaal" title="Aardalkalimetaal">2<br />IIa</a> </th> <th colspan="10" style="text-align:center"><big><a href="/wiki/Periodiek_systeem" title="Periodiek systeem">Periodiek systeem</a></big> </th> <th style="vertical-align: middle;"><a href="/wiki/Boorgroep" title="Boorgroep">13<br />IIIa</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Koolstofgroep" title="Koolstofgroep">14<br />IVa</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Stikstofgroep" title="Stikstofgroep">15<br />Va</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Zuurstofgroep" title="Zuurstofgroep">16<br />VIa</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Halogeen" title="Halogeen">17<br />VIIa</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999">2<br /><a href="/wiki/Helium" title="Helium">He</a> </td> <td> </td> <td align="left" bgcolor="#F8F9FA" style="border:1px solid black;"><a href="/wiki/Periode-1-element" title="Periode-1-element">Periode 1</a>: 1s </td></tr> <tr> <th style="vertical-align: middle;"><a class="mw-selflink selflink">2</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#fbf">3<br /><a href="/wiki/Lithium_(element)" title="Lithium (element)">Li</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#fb7">4<br /><a href="/wiki/Beryllium" title="Beryllium">Be</a> </td> <td colspan="10" align="center"> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#ccf">5<br /><a href="/wiki/Boor_(element)" title="Boor (element)">B</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#bf7">6<br /><a href="/wiki/Koolstof" title="Koolstof">C</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#bf7">7<br /><a href="/wiki/Stikstof_(element)" title="Stikstof (element)">N</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#bf7">8<br /><a href="/wiki/Zuurstof_(element)" title="Zuurstof (element)">O</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#ffb">9<br /><a href="/wiki/Fluor_(element)" title="Fluor (element)">F</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#7fb">10<br /><a href="/wiki/Neon_(element)" title="Neon (element)">Ne</a> </td> <td> </td> <td align="left" bgcolor="#F8F9FA" style="border:1px solid black;"><a class="mw-selflink selflink">Periode 2</a>: [He]2s2p </td></tr> <tr> <th style="vertical-align: middle;"><a href="/wiki/Periode-3-element" title="Periode-3-element">3</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999">11<br /><a href="/wiki/Natrium" title="Natrium">Na</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">12<br /><a href="/wiki/Magnesium" title="Magnesium">Mg</a> </td> <th style="vertical-align: middle;"><a href="/wiki/Scandiumgroep" title="Scandiumgroep">3<br />IIIb</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Titaangroep" title="Titaangroep">4<br />IVb</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Vanadiumgroep" title="Vanadiumgroep">5<br />Vb</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Chroomgroep" title="Chroomgroep">6<br />VIb</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Mangaangroep" title="Mangaangroep">7<br />VIIb</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Platinagroep" title="Platinagroep">8<br />VIIIb</a> </th> <th style="vertical-align: middle;">9<br />VIIIb </th> <th style="vertical-align: middle;">10<br />VIIIb </th> <th style="vertical-align: middle;"><a href="/wiki/Kopergroep" title="Kopergroep">11<br />Ib</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Zinkgroep" title="Zinkgroep">12<br />IIb</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999">13<br /><a href="/wiki/Aluminium" title="Aluminium">Al</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">14<br /><a href="/wiki/Silicium" title="Silicium">Si</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">15<br /><a href="/wiki/Fosfor" title="Fosfor">P</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">16<br /><a href="/wiki/Zwavel" title="Zwavel">S</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">17<br /><a href="/wiki/Chloor_(element)" title="Chloor (element)">Cl</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">18<br /><a href="/wiki/Argon" title="Argon">Ar</a> </td> <td> </td> <td align="left" bgcolor="#F8F9FA" style="border:1px solid black;"><a href="/wiki/Periode-3-element" title="Periode-3-element">Periode 3</a>: [Ne]3s3p </td></tr> <tr> <th style="vertical-align: middle;"><a href="/wiki/Periode-4-element" title="Periode-4-element">4</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999">19<br /><a href="/wiki/Kalium" title="Kalium">K</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">20<br /><a href="/wiki/Calcium" title="Calcium">Ca</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">21<br /><a href="/wiki/Scandium" title="Scandium">Sc</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">22<br /><a href="/wiki/Titanium" title="Titanium">Ti</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">23<br /><a href="/wiki/Vanadium" title="Vanadium">V</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">24<br /><a href="/wiki/Chroom_(element)" title="Chroom (element)">Cr</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">25<br /><a href="/wiki/Mangaan" title="Mangaan">Mn</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">26<br /><a href="/wiki/IJzer_(element)" title="IJzer (element)">Fe</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">27<br /><a href="/wiki/Kobalt" title="Kobalt">Co</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">28<br /><a href="/wiki/Nikkel" title="Nikkel">Ni</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">29<br /><a href="/wiki/Koper_(element)" title="Koper (element)">Cu</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">30<br /><a href="/wiki/Zink_(element)" title="Zink (element)">Zn</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">31<br /><a href="/wiki/Gallium" title="Gallium">Ga</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">32<br /><a href="/wiki/Germanium" title="Germanium">Ge</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">33<br /><a href="/wiki/Arseen" title="Arseen">As</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">34<br /><a href="/wiki/Seleen" title="Seleen">Se</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">35<br /><a href="/wiki/Broom_(element)" title="Broom (element)">Br</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">36<br /><a href="/wiki/Krypton_(element)" title="Krypton (element)">Kr</a> </td> <td> </td> <td align="left" bgcolor="#F8F9FA" style="border:1px solid black;"><a href="/wiki/Periode-4-element" title="Periode-4-element">Periode 4</a>: [Ar]3d4s4p </td></tr> <tr> <th style="vertical-align: middle;"><a href="/wiki/Periode-5-element" title="Periode-5-element">5</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999">37<br /><a href="/wiki/Rubidium" title="Rubidium">Rb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">38<br /><a href="/wiki/Strontium" title="Strontium">Sr</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">39<br /><a href="/wiki/Yttrium" title="Yttrium">Y</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">40<br /><a href="/wiki/Zirkonium" title="Zirkonium">Zr</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">41<br /><a href="/wiki/Niobium" title="Niobium">Nb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">42<br /><a href="/wiki/Molybdeen" title="Molybdeen">Mo</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">43<br /><a href="/wiki/Technetium" title="Technetium">Tc</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">44<br /><a href="/wiki/Ruthenium" title="Ruthenium">Ru</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">45<br /><a href="/wiki/Rodium" title="Rodium">Rh</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">46<br /><a href="/wiki/Palladium_(element)" title="Palladium (element)">Pd</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">47<br /><a href="/wiki/Zilver" title="Zilver">Ag</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">48<br /><a href="/wiki/Cadmium" title="Cadmium">Cd</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">49<br /><a href="/wiki/Indium" title="Indium">In</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">50<br /><a href="/wiki/Tin_(element)" title="Tin (element)">Sn</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">51<br /><a href="/wiki/Antimoon" title="Antimoon">Sb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">52<br /><a href="/wiki/Telluur" title="Telluur">Te</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">53<br /><a href="/wiki/Jodium_(element)" title="Jodium (element)">I</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">54<br /><a href="/wiki/Xenon" title="Xenon">Xe</a> </td> <td> </td> <td align="left" bgcolor="#F8F9FA" style="border:1px solid black;"><a href="/wiki/Periode-5-element" title="Periode-5-element">Periode 5</a>: [Kr]4d5s5p </td></tr> <tr> <th style="vertical-align: middle;"><a href="/wiki/Periode-6-element" title="Periode-6-element">6</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999">55<br /><a href="/wiki/Cesium" title="Cesium">Cs</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">56<br /><a href="/wiki/Barium" title="Barium">Ba</a> </td> <td style="border:1px solid #aaaaaa; vertical-align: middle;" bgcolor="#777"><a href="/wiki/Lanthanide" title="Lanthanide">↓</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">72<br /><a href="/wiki/Hafnium" title="Hafnium">Hf</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">73<br /><a href="/wiki/Tantaal" title="Tantaal">Ta</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">74<br /><a href="/wiki/Wolfraam" title="Wolfraam">W</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">75<br /><a href="/wiki/Renium" title="Renium">Re</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">76<br /><a href="/wiki/Osmium" title="Osmium">Os</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">77<br /><a href="/wiki/Iridium_(element)" title="Iridium (element)">Ir</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">78<br /><a href="/wiki/Platina" title="Platina">Pt</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">79<br /><a href="/wiki/Goud" title="Goud">Au</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">80<br /><a href="/wiki/Kwik" title="Kwik">Hg</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">81<br /><a href="/wiki/Thallium" title="Thallium">Tl</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">82<br /><a href="/wiki/Lood_(element)" title="Lood (element)">Pb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">83<br /><a href="/wiki/Bismut" title="Bismut">Bi</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">84<br /><a href="/wiki/Polonium" title="Polonium">Po</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">85<br /><a href="/wiki/Astaat" title="Astaat">At</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">86<br /><a href="/wiki/Radon_(element)" title="Radon (element)">Rn</a> </td> <td> </td> <td align="left" bgcolor="#F8F9FA" style="border:1px solid black;"><a href="/wiki/Periode-6-element" title="Periode-6-element">Periode 6</a>: [Xe]4f5d6s6p </td></tr> <tr> <th style="vertical-align: middle;"><a href="/wiki/Periode-7-element" title="Periode-7-element">7</a> </th> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">87<br /><a href="/wiki/Francium" title="Francium">Fr</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">88<br /><a href="/wiki/Radium" title="Radium">Ra</a> </td> <td width="40" style="border:1px solid #aaaaaa; vertical-align: middle;" bgcolor="#777"><a href="/wiki/Actinide" title="Actinide">↓↓</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">104<br /><a href="/wiki/Rutherfordium" title="Rutherfordium">Rf</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">105<br /><a href="/wiki/Dubnium" title="Dubnium">Db</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">106<br /><a href="/wiki/Seaborgium" title="Seaborgium">Sg</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">107<br /><a href="/wiki/Bohrium" title="Bohrium">Bh</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">108<br /><a href="/wiki/Hassium" title="Hassium">Hs</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">109<br /><a href="/wiki/Meitnerium" title="Meitnerium">Mt</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">110<br /><a href="/wiki/Darmstadtium" title="Darmstadtium">Ds</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">111<br /><a href="/wiki/R%C3%B6ntgenium" title="Röntgenium">Rg</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">112<br /><a href="/wiki/Copernicium" title="Copernicium">Cn</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">113<br /><a href="/wiki/Nihonium" title="Nihonium">Nh</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">114<br /><a href="/wiki/Flerovium" title="Flerovium">Fl</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">115<br /><a href="/wiki/Moscovium" title="Moscovium">Mc</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">116<br /><a href="/wiki/Livermorium" title="Livermorium">Lv</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">117<br /><a href="/wiki/Tennessine" title="Tennessine">Ts</a> </td> <td width="40" style="border:1px solid #aaaaaa;" bgcolor="#999">118<br /><a href="/wiki/Oganesson" title="Oganesson">Og</a> </td> <td> </td> <td align="left" bgcolor="#F8F9FA" style="border:1px solid black;"><a href="/wiki/Periode-7-element" title="Periode-7-element">Periode 7</a>: [Rn]5f6d7s </td></tr> <tr> <td colspan="19">  </td></tr> <tr> <th colspan="3" style="vertical-align: middle;"><a href="/wiki/Lanthanide" title="Lanthanide">Lanthaniden</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999">57<br /><a href="/wiki/Lanthaan" title="Lanthaan">La</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">58<br /><a href="/wiki/Cerium" title="Cerium">Ce</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">59<br /><a href="/wiki/Praseodymium" title="Praseodymium">Pr</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">60<br /><a href="/wiki/Neodymium" title="Neodymium">Nd</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">61<br /><a href="/wiki/Promethium" title="Promethium">Pm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">62<br /><a href="/wiki/Samarium" title="Samarium">Sm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">63<br /><a href="/wiki/Europium" title="Europium">Eu</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">64<br /><a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">65<br /><a href="/wiki/Terbium" title="Terbium">Tb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">66<br /><a href="/wiki/Dysprosium" title="Dysprosium">Dy</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">67<br /><a href="/wiki/Holmium" title="Holmium">Ho</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">68<br /><a href="/wiki/Erbium" title="Erbium">Er</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">69<br /><a href="/wiki/Thulium" title="Thulium">Tm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">70<br /><a href="/wiki/Ytterbium" title="Ytterbium">Yb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">71<br /><a href="/wiki/Lutetium" title="Lutetium">Lu</a> </td> <td> </td></tr> <tr> <th colspan="3" style="vertical-align: middle;"><a href="/wiki/Actinide" title="Actinide">Actiniden</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999">89<br /><a href="/wiki/Actinium" title="Actinium">Ac</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">90<br /><a href="/wiki/Thorium" title="Thorium">Th</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">91<br /><a href="/wiki/Protactinium" title="Protactinium">Pa</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">92<br /><a href="/wiki/Uranium" title="Uranium">U</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">93<br /><a href="/wiki/Neptunium" title="Neptunium">Np</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">94<br /><a href="/wiki/Plutonium" title="Plutonium">Pu</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">95<br /><a href="/wiki/Americium" title="Americium">Am</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">96<br /><a href="/wiki/Curium" title="Curium">Cm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">97<br /><a href="/wiki/Berkelium" title="Berkelium">Bk</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">98<br /><a href="/wiki/Californium" title="Californium">Cf</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">99<br /><a href="/wiki/Einsteinium" title="Einsteinium">Es</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">100<br /><a href="/wiki/Fermium" title="Fermium">Fm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">101<br /><a href="/wiki/Mendelevium" title="Mendelevium">Md</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">102<br /><a href="/wiki/Nobelium" title="Nobelium">No</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999">103<br /><a href="/wiki/Lawrencium" title="Lawrencium">Lr</a> </td> <td> </td></tr> <tr> <td>  </td></tr> <tr> <td></td> <td></td> <td> </td> <th colspan="15">Chemische reeksen van het periodiek systeem </th></tr> <tr> <td></td> <td></td> <td> </td> <td colspan="3" style="background:#fbf;"><a href="/wiki/Alkalimetaal" title="Alkalimetaal">Alkalimetalen</a> </td> <td colspan="3" style="background:#fb7;"><a href="/wiki/Aardalkalimetaal" title="Aardalkalimetaal">Aardalkalimetalen</a> </td> <td colspan="3" style="background:#bff;"><a href="/wiki/Overgangsmetaal" title="Overgangsmetaal">Overgangsmetalen</a> </td> <td colspan="3" style="background:#7bf;"><a href="/wiki/Hoofdgroepmetaal" title="Hoofdgroepmetaal">Hoofdgroepmetalen</a> </td> <td colspan="3" style="background:#ccf;"><a href="/wiki/Metallo%C3%AFde" title="Metalloïde">Metalloïden</a> </td></tr> <tr> <td></td> <td></td> <td> </td> <td colspan="3" style="background:#bf7;"><a href="/wiki/Niet-metaal" title="Niet-metaal">Niet-metalen</a> </td> <td colspan="3" style="background:#ffb;"><a href="/wiki/Halogeen" title="Halogeen">Halogenen</a> </td> <td colspan="3" style="background:#7fb;"><a href="/wiki/Edelgas" title="Edelgas">Edelgassen</a> </td> <td colspan="3" style="background:#dbd;"><a href="/wiki/Lanthanide" title="Lanthanide">Lanthaniden</a> </td> <td colspan="3" style="background:#d8d;"><a href="/wiki/Actinide" title="Actinide">Actiniden</a> </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; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Overgenomen van "<a dir="ltr" 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