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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=Wolfraam" 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=Wolfraam" 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=Wolfraam" 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 class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Inhoud" 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">Inhoud</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">naar zijbalk verplaatsen</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">verbergen</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">Top</div> </a> </li> <li id="toc-Naamgeving" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Naamgeving"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Naamgeving</span> </div> </a> <ul id="toc-Naamgeving-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ontdekking" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ontdekking"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Ontdekking</span> </div> </a> <ul id="toc-Ontdekking-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Toepassingen" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Toepassingen"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Toepassingen</span> </div> </a> <ul id="toc-Toepassingen-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Winning" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Winning"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Winning</span> </div> </a> <ul id="toc-Winning-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Opmerkelijke_eigenschappen" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Opmerkelijke_eigenschappen"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Opmerkelijke eigenschappen</span> </div> </a> <button aria-controls="toc-Opmerkelijke_eigenschappen-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>Opmerkelijke eigenschappen-subkopje inklappen</span> </button> <ul id="toc-Opmerkelijke_eigenschappen-sublist" class="vector-toc-list"> <li id="toc-Goudvervalsing" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Goudvervalsing"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1</span> <span>Goudvervalsing</span> </div> </a> <ul id="toc-Goudvervalsing-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Verschijning" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Verschijning"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Verschijning</span> </div> </a> <ul id="toc-Verschijning-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Isotopen" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Isotopen"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Isotopen</span> </div> </a> <ul id="toc-Isotopen-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Toxicologie_en_veiligheid" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Toxicologie_en_veiligheid"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Toxicologie en veiligheid</span> </div> </a> <ul id="toc-Toxicologie_en_veiligheid-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Externe_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Externe_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Externe links</span> </div> </a> <ul id="toc-Externe_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Inhoud" 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="Inhoudsopgave omschakelen" > <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">Inhoudsopgave omschakelen</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">Wolfraam</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 146 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-146" 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">146 talen</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Wolfram" title="Wolfram – Afrikaans" lang="af" hreflang="af" data-title="Wolfram" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%89%B0%E1%8A%95%E1%8C%8D%E1%88%B5%E1%89%B0%E1%8A%95" title="ተንግስተን – Amhaars" lang="am" hreflang="am" data-title="ተንግስተን" data-language-autonym="አማርኛ" data-language-local-name="Amhaars" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Tungsteno" title="Tungsteno – Aragonees" lang="an" hreflang="an" data-title="Tungsteno" 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%9F%E0%A4%82%E0%A4%97%E0%A4%B8%E0%A5%8D%E0%A4%9F%E0%A4%A8" title="टंगस्टन – Angika" lang="anp" hreflang="anp" data-title="टंगस्टन" 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%AA%D9%86%D8%AC%D8%B3%D8%AA%D9%86" title="تنجستن – Arabisch" lang="ar" hreflang="ar" data-title="تنجستن" data-language-autonym="العربية" data-language-local-name="Arabisch" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D8%AA%D9%88%D9%86%DD%A3%D8%B3%D8%AA%D9%8A%D9%86" title="تونݣستين – Marokkaans Arabisch" lang="ary" hreflang="ary" data-title="تونݣستين" data-language-autonym="الدارجة" data-language-local-name="Marokkaans Arabisch" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%AA%D9%86%D8%AC%D8%B3%D8%AA%D9%86" title="تنجستن – Egyptisch Arabisch" lang="arz" hreflang="arz" data-title="تنجستن" data-language-autonym="مصرى" data-language-local-name="Egyptisch Arabisch" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Volframiu" title="Volframiu – Asturisch" lang="ast" hreflang="ast" data-title="Volframiu" data-language-autonym="Asturianu" data-language-local-name="Asturisch" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-avk mw-list-item"><a href="https://avk.wikipedia.org/wiki/Wungel" title="Wungel – Kotava" lang="avk" hreflang="avk" data-title="Wungel" data-language-autonym="Kotava" data-language-local-name="Kotava" class="interlanguage-link-target"><span>Kotava</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Volfram" title="Volfram – Azerbeidzjaans" lang="az" hreflang="az" data-title="Volfram" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbeidzjaans" 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%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Basjkiers" lang="ba" hreflang="ba" data-title="Вольфрам" data-language-autonym="Башҡортса" data-language-local-name="Basjkiers" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Tungst%C3%A9n" title="Tungstén – Balinees" lang="ban" hreflang="ban" data-title="Tungstén" data-language-autonym="Basa Bali" data-language-local-name="Balinees" class="interlanguage-link-target"><span>Basa Bali</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Wolpramyo" title="Wolpramyo – Central Bikol" lang="bcl" hreflang="bcl" data-title="Wolpramyo" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target"><span>Bikol Central</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%92%D0%B0%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вальфрам – Belarussisch" lang="be" hreflang="be" data-title="Вальфрам" data-language-autonym="Беларуская" data-language-local-name="Belarussisch" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%92%D0%B0%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вальфрам – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Вальфрам" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%84%D1%80%D0%B0%D0%BC" title="Волфрам – Bulgaars" lang="bg" hreflang="bg" data-title="Волфрам" data-language-autonym="Български" data-language-local-name="Bulgaars" 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%9F%E0%A4%82%E0%A4%97%E0%A4%B8%E0%A5%8D%E0%A4%9F%E0%A4%A8" title="टंगस्टन – Bhojpuri" lang="bh" hreflang="bh" data-title="टंगस्टन" 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%9F%E0%A6%BE%E0%A6%82%E0%A6%B8%E0%A7%8D%E0%A6%9F%E0%A7%87%E0%A6%A8" title="টাংস্টেন – Bengaals" lang="bn" hreflang="bn" data-title="টাংস্টেন" data-language-autonym="বাংলা" data-language-local-name="Bengaals" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%8A%E0%BD%84%E0%BC%8B%E0%BD%A6%E0%BD%B2%E0%BC%8B%E0%BD%8A%E0%BD%93%E0%BC%8D" title="ཊང་སི་ཊན། – Tibetaans" lang="bo" hreflang="bo" data-title="ཊང་སི་ཊན།" data-language-autonym="བོད་ཡིག" data-language-local-name="Tibetaans" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Wolfram_(tungsten)" title="Wolfram (tungsten) – Bretons" lang="br" hreflang="br" data-title="Wolfram (tungsten)" data-language-autonym="Brezhoneg" data-language-local-name="Bretons" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Volfram" title="Volfram – Bosnisch" lang="bs" hreflang="bs" data-title="Volfram" data-language-autonym="Bosanski" data-language-local-name="Bosnisch" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Tungst%C3%A8" title="Tungstè – Catalaans" lang="ca" hreflang="ca" data-title="Tungstè" data-language-autonym="Català" data-language-local-name="Catalaans" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/%C5%AC_(g%C4%ADng-s%E1%B9%B3%CC%86k)" title="Ŭ (gĭng-sṳ̆k) – Mindong" lang="cdo" hreflang="cdo" data-title="Ŭ (gĭng-sṳ̆k)" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Wolframyo" title="Wolframyo – Cebuano" lang="ceb" hreflang="ceb" data-title="Wolframyo" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%AA%DB%95%D9%86%DA%AF%D8%B3%D8%AA%D9%86" title="تەنگستن – Soranî" lang="ckb" hreflang="ckb" data-title="تەنگستن" data-language-autonym="کوردی" data-language-local-name="Soranî" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Tungstenu" title="Tungstenu – Corsicaans" lang="co" hreflang="co" data-title="Tungstenu" data-language-autonym="Corsu" data-language-local-name="Corsicaans" class="interlanguage-link-target"><span>Corsu</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Wolfram" title="Wolfram – Tsjechisch" lang="cs" hreflang="cs" data-title="Wolfram" data-language-autonym="Čeština" data-language-local-name="Tsjechisch" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Tsjoevasjisch" lang="cv" hreflang="cv" data-title="Вольфрам" data-language-autonym="Чӑвашла" data-language-local-name="Tsjoevasjisch" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Twngsten" title="Twngsten – Welsh" lang="cy" hreflang="cy" data-title="Twngsten" 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/Wolfram" title="Wolfram – Deens" lang="da" hreflang="da" data-title="Wolfram" 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/Wolfram" title="Wolfram – Duits" lang="de" hreflang="de" data-title="Wolfram" 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%92%CE%BF%CE%BB%CF%86%CF%81%CE%AC%CE%BC%CE%B9%CE%BF" title="Βολφράμιο – Grieks" lang="el" hreflang="el" data-title="Βολφράμιο" data-language-autonym="Ελληνικά" data-language-local-name="Grieks" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en badge-Q17437798 badge-goodarticle mw-list-item" title="goed artikel"><a href="https://en.wikipedia.org/wiki/Tungsten" title="Tungsten – Engels" lang="en" hreflang="en" data-title="Tungsten" 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/Volframo" title="Volframo – Esperanto" lang="eo" hreflang="eo" data-title="Volframo" 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="goed artikel"><a href="https://es.wikipedia.org/wiki/Wolframio" title="Wolframio – Spaans" lang="es" hreflang="es" data-title="Wolframio" data-language-autonym="Español" data-language-local-name="Spaans" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Volfram" title="Volfram – Estisch" lang="et" hreflang="et" data-title="Volfram" data-language-autonym="Eesti" data-language-local-name="Estisch" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Wolfram" title="Wolfram – Baskisch" lang="eu" hreflang="eu" data-title="Wolfram" 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%AA%D9%86%DA%AF%D8%B3%D8%AA%D9%86" title="تنگستن – Perzisch" lang="fa" hreflang="fa" data-title="تنگستن" 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/Volframi" title="Volframi – Fins" lang="fi" hreflang="fi" data-title="Volframi" 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/Tungst%C3%A8ne" title="Tungstène – Frans" lang="fr" hreflang="fr" data-title="Tungstène" 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/Wolfraam" title="Wolfraam – Noord-Fries" lang="frr" hreflang="frr" data-title="Wolfraam" data-language-autonym="Nordfriisk" data-language-local-name="Noord-Fries" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Tungsten" title="Tungsten – Friulisch" lang="fur" hreflang="fur" data-title="Tungsten" data-language-autonym="Furlan" data-language-local-name="Friulisch" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Tungstan" title="Tungstan – Iers" lang="ga" hreflang="ga" data-title="Tungstan" data-language-autonym="Gaeilge" data-language-local-name="Iers" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Tungstan" title="Tungstan – Schots-Gaelisch" lang="gd" hreflang="gd" data-title="Tungstan" data-language-autonym="Gàidhlig" data-language-local-name="Schots-Gaelisch" class="interlanguage-link-target"><span>Gàidhlig</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Volframio" title="Volframio – Galicisch" lang="gl" hreflang="gl" data-title="Volframio" data-language-autonym="Galego" data-language-local-name="Galicisch" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%9F%E0%AA%82%E0%AA%97%E0%AA%B8%E0%AB%8D%E0%AA%9F%E0%AA%A8" title="ટંગસ્ટન – Gujarati" lang="gu" hreflang="gu" data-title="ટંગસ્ટન" data-language-autonym="ગુજરાતી" data-language-local-name="Gujarati" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Tungsten" title="Tungsten – Manx" lang="gv" hreflang="gv" data-title="Tungsten" data-language-autonym="Gaelg" data-language-local-name="Manx" class="interlanguage-link-target"><span>Gaelg</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/Wolfram" title="Wolfram – Hakka" lang="hak" hreflang="hak" data-title="Wolfram" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="Hakka" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%98%D7%95%D7%A0%D7%92%D7%A1%D7%98%D7%9F" title="טונגסטן – Hebreeuws" lang="he" hreflang="he" data-title="טונגסטן" data-language-autonym="עברית" data-language-local-name="Hebreeuws" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%9F%E0%A4%82%E0%A4%97%E0%A4%B8%E0%A5%8D%E0%A4%9F%E0%A4%A8" title="टंगस्टन – Hindi" lang="hi" hreflang="hi" data-title="टंगस्टन" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Tungsten" title="Tungsten – Fijisch Hindi" lang="hif" hreflang="hif" data-title="Tungsten" data-language-autonym="Fiji Hindi" data-language-local-name="Fijisch Hindi" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Volfram" title="Volfram – Kroatisch" lang="hr" hreflang="hr" data-title="Volfram" data-language-autonym="Hrvatski" data-language-local-name="Kroatisch" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Volfr%C3%A1m" title="Volfrám – Hongaars" lang="hu" hreflang="hu" data-title="Volfrám" data-language-autonym="Magyar" data-language-local-name="Hongaars" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8E%D5%B8%D5%AC%D6%86%D6%80%D5%A1%D5%B4" title="Վոլֆրամ – Armeens" lang="hy" hreflang="hy" data-title="Վոլֆրամ" data-language-autonym="Հայերեն" data-language-local-name="Armeens" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hyw mw-list-item"><a href="https://hyw.wikipedia.org/wiki/%D5%8E%D5%B8%D5%AC%D6%83%D6%80%D5%A1%D5%B4" title="Վոլփրամ – Western Armenian" lang="hyw" hreflang="hyw" data-title="Վոլփրամ" data-language-autonym="Արեւմտահայերէն" data-language-local-name="Western Armenian" class="interlanguage-link-target"><span>Արեւմտահայերէն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Tungsten" title="Tungsten – Interlingua" lang="ia" hreflang="ia" data-title="Tungsten" 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/Wolfram" title="Wolfram – Indonesisch" lang="id" hreflang="id" data-title="Wolfram" 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-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Wolframo" title="Wolframo – Ido" lang="io" hreflang="io" data-title="Wolframo" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Volfram" title="Volfram – IJslands" lang="is" hreflang="is" data-title="Volfram" data-language-autonym="Íslenska" data-language-local-name="IJslands" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Tungsteno" title="Tungsteno – Italiaans" lang="it" hreflang="it" data-title="Tungsteno" 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/%E3%82%BF%E3%83%B3%E3%82%B0%E3%82%B9%E3%83%86%E3%83%B3" title="タングステン – Japans" lang="ja" hreflang="ja" data-title="タングステン" 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-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/jarjinme" title="jarjinme – Lojban" lang="jbo" hreflang="jbo" data-title="jarjinme" data-language-autonym="La .lojban." data-language-local-name="Lojban" class="interlanguage-link-target"><span>La .lojban.</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%95%E1%83%9D%E1%83%9A%E1%83%A4%E1%83%A0%E1%83%90%E1%83%9B%E1%83%98" title="ვოლფრამი – Georgisch" lang="ka" hreflang="ka" data-title="ვოლფრამი" data-language-autonym="ქართული" data-language-local-name="Georgisch" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/T%C9%94%C5%8Bk%C9%A9s%C9%A9t%C9%9Bn%C9%A9" title="Tɔŋkɩsɩtɛnɩ – Kabiye" lang="kbp" hreflang="kbp" data-title="Tɔŋkɩsɩtɛnɩ" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Kazachs" lang="kk" hreflang="kk" data-title="Вольфрам" data-language-autonym="Қазақша" data-language-local-name="Kazachs" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%9F%E0%B2%82%E0%B2%97%E0%B3%8D%E2%80%8C%E0%B2%B8%E0%B3%8D%E0%B2%9F%E0%B2%A8%E0%B3%8D" title="ಟಂಗ್‌ಸ್ಟನ್ – Kannada" lang="kn" hreflang="kn" data-title="ಟಂಗ್‌ಸ್ಟನ್" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%85%85%EC%8A%A4%ED%85%90" title="텅스텐 – Koreaans" lang="ko" hreflang="ko" data-title="텅스텐" data-language-autonym="한국어" data-language-local-name="Koreaans" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Wolfram" title="Wolfram – Koerdisch" lang="ku" hreflang="ku" data-title="Wolfram" data-language-autonym="Kurdî" data-language-local-name="Koerdisch" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-kv mw-list-item"><a href="https://kv.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Komi" lang="kv" hreflang="kv" data-title="Вольфрам" data-language-autonym="Коми" data-language-local-name="Komi" class="interlanguage-link-target"><span>Коми</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Tongsten" title="Tongsten – Cornish" lang="kw" hreflang="kw" data-title="Tongsten" data-language-autonym="Kernowek" data-language-local-name="Cornish" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Kirgizisch" lang="ky" hreflang="ky" data-title="Вольфрам" data-language-autonym="Кыргызча" data-language-local-name="Kirgizisch" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Wolframium" title="Wolframium – Latijn" lang="la" hreflang="la" data-title="Wolframium" data-language-autonym="Latina" data-language-local-name="Latijn" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Wolfram" title="Wolfram – Luxemburgs" lang="lb" hreflang="lb" data-title="Wolfram" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxemburgs" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Wolfraam" title="Wolfraam – Limburgs" lang="li" hreflang="li" data-title="Wolfraam" data-language-autonym="Limburgs" data-language-local-name="Limburgs" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Tungsten" title="Tungsten – Ligurisch" lang="lij" hreflang="lij" data-title="Tungsten" data-language-autonym="Ligure" data-language-local-name="Ligurisch" class="interlanguage-link-target"><span>Ligure</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Tungsteno" title="Tungsteno – Lombardisch" lang="lmo" hreflang="lmo" data-title="Tungsteno" 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/Volframas" title="Volframas – Litouws" lang="lt" hreflang="lt" data-title="Volframas" data-language-autonym="Lietuvių" data-language-local-name="Litouws" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Volframs" title="Volframs – Lets" lang="lv" hreflang="lv" data-title="Volframs" data-language-autonym="Latviešu" data-language-local-name="Lets" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mdf mw-list-item"><a href="https://mdf.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC%D0%B0" title="Вольфрама – Moksja" lang="mdf" hreflang="mdf" data-title="Вольфрама" data-language-autonym="Мокшень" data-language-local-name="Moksja" class="interlanguage-link-target"><span>Мокшень</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Tongstena" title="Tongstena – Malagassisch" lang="mg" hreflang="mg" data-title="Tongstena" data-language-autonym="Malagasy" data-language-local-name="Malagassisch" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%84%D1%80%D0%B0%D0%BC" title="Волфрам – Macedonisch" lang="mk" hreflang="mk" data-title="Волфрам" data-language-autonym="Македонски" data-language-local-name="Macedonisch" 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%9F%E0%B4%99%E0%B5%8D%E0%B4%B8%E0%B5%8D%E0%B4%B1%E0%B5%8D%E0%B4%B1%E0%B5%BA" title="ടങ്സ്റ്റൺ – Malayalam" lang="ml" hreflang="ml" data-title="ടങ്സ്റ്റൺ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Mongools" lang="mn" hreflang="mn" data-title="Вольфрам" data-language-autonym="Монгол" data-language-local-name="Mongools" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%9F%E0%A4%82%E0%A4%97%E0%A4%B8%E0%A5%8D%E0%A4%9F%E0%A4%A8" title="टंगस्टन – Marathi" lang="mr" hreflang="mr" data-title="टंगस्टन" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-mrj mw-list-item"><a href="https://mrj.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – West-Mari" lang="mrj" hreflang="mrj" data-title="Вольфрам" data-language-autonym="Кырык мары" data-language-local-name="West-Mari" class="interlanguage-link-target"><span>Кырык мары</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Tungsten" title="Tungsten – Maleis" lang="ms" hreflang="ms" data-title="Tungsten" 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-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%90%E1%80%94%E1%80%BA%E1%80%85%E1%80%90%E1%80%84%E1%80%BA" title="တန်စတင် – Birmaans" lang="my" hreflang="my" data-title="တန်စတင်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Birmaans" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-myv mw-list-item"><a href="https://myv.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Erzja" lang="myv" hreflang="myv" data-title="Вольфрам" data-language-autonym="Эрзянь" data-language-local-name="Erzja" class="interlanguage-link-target"><span>Эрзянь</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Wolfram" title="Wolfram – Nedersaksisch" lang="nds" hreflang="nds" data-title="Wolfram" data-language-autonym="Plattdüütsch" data-language-local-name="Nedersaksisch" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%9F%E0%A4%82%E0%A4%97%E0%A5%8D%E0%A4%B8%E0%A5%8D%E0%A4%9F%E0%A5%87%E0%A4%A8" title="टंग्स्टेन – Newari" lang="new" hreflang="new" data-title="टंग्स्टेन" data-language-autonym="नेपाल भाषा" data-language-local-name="Newari" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Wolfram" title="Wolfram – Noors - Nynorsk" lang="nn" hreflang="nn" data-title="Wolfram" data-language-autonym="Norsk nynorsk" data-language-local-name="Noors - Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Wolfram" title="Wolfram – Noors - Bokmål" lang="nb" hreflang="nb" data-title="Wolfram" data-language-autonym="Norsk bokmål" data-language-local-name="Noors - Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Tungst%C3%A8n" title="Tungstèn – Occitaans" lang="oc" hreflang="oc" data-title="Tungstèn" data-language-autonym="Occitan" data-language-local-name="Occitaans" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-olo mw-list-item"><a href="https://olo.wikipedia.org/wiki/Vol%27framu" title="Vol'framu – Livvi-Karelian" lang="olo" hreflang="olo" data-title="Vol'framu" data-language-autonym="Livvinkarjala" data-language-local-name="Livvi-Karelian" class="interlanguage-link-target"><span>Livvinkarjala</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%9F%E0%AC%99%E0%AD%8D%E0%AC%97%E0%AD%8D%E2%80%8C%E0%AC%B7%E0%AD%8D%E0%AC%9F%E0%AC%A8" title="ଟଙ୍ଗ୍‌ଷ୍ଟନ – Odia" lang="or" hreflang="or" data-title="ଟଙ୍ଗ୍‌ଷ୍ଟନ" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="Odia" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-os mw-list-item"><a href="https://os.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Ossetisch" lang="os" hreflang="os" data-title="Вольфрам" data-language-autonym="Ирон" data-language-local-name="Ossetisch" class="interlanguage-link-target"><span>Ирон</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%9F%E0%A9%B0%E0%A8%97%E0%A8%B8%E0%A8%9F%E0%A9%B0%E0%A8%A8" title="ਟੰਗਸਟੰਨ – Punjabi" lang="pa" hreflang="pa" data-title="ਟੰਗਸਟੰਨ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pi mw-list-item"><a href="https://pi.wikipedia.org/wiki/%E0%A4%9F%E0%A4%82%E0%A4%97%E0%A5%8D%E0%A4%B8%E0%A5%8D%E0%A4%9F%E0%A5%87%E0%A4%A8" title="टंग्स्टेन – Pali" lang="pi" hreflang="pi" data-title="टंग्स्टेन" data-language-autonym="पालि" data-language-local-name="Pali" class="interlanguage-link-target"><span>पालि</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Wolfram" title="Wolfram – Pools" lang="pl" hreflang="pl" data-title="Wolfram" data-language-autonym="Polski" data-language-local-name="Pools" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Tongsten" title="Tongsten – Piëmontees" lang="pms" hreflang="pms" data-title="Tongsten" data-language-autonym="Piemontèis" data-language-local-name="Piëmontees" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D9%B9%D9%86%DA%AF%D8%B3%D9%B9%D9%86" title="ٹنگسٹن – Western Punjabi" lang="pnb" hreflang="pnb" data-title="ٹنگسٹن" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D9%BC%D9%88%D9%86%DA%AF%D8%B3%D9%BC%D9%86" title="ټونگسټن – Pasjtoe" lang="ps" hreflang="ps" data-title="ټونگسټن" data-language-autonym="پښتو" data-language-local-name="Pasjtoe" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt badge-Q17437798 badge-goodarticle mw-list-item" title="goed artikel"><a href="https://pt.wikipedia.org/wiki/Tungst%C3%AAnio" title="Tungstênio – Portugees" lang="pt" hreflang="pt" data-title="Tungstênio" data-language-autonym="Português" data-language-local-name="Portugees" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Wulpharamyu" title="Wulpharamyu – Quechua" lang="qu" hreflang="qu" data-title="Wulpharamyu" data-language-autonym="Runa Simi" data-language-local-name="Quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Wolfram" title="Wolfram – Roemeens" lang="ro" hreflang="ro" data-title="Wolfram" data-language-autonym="Română" data-language-local-name="Roemeens" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Wolframu" title="Wolframu – Aroemeens" lang="rup" hreflang="rup" data-title="Wolframu" data-language-autonym="Armãneashti" data-language-local-name="Aroemeens" class="interlanguage-link-target"><span>Armãneashti</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Russisch" lang="ru" hreflang="ru" data-title="Вольфрам" data-language-autonym="Русский" data-language-local-name="Russisch" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sa mw-list-item"><a href="https://sa.wikipedia.org/wiki/%E0%A4%9F%E0%A4%82%E0%A4%97%E0%A5%8D%E0%A4%B8%E0%A5%8D%E0%A4%9F%E0%A5%87%E0%A4%A8" title="टंग्स्टेन – Sanskriet" lang="sa" hreflang="sa" data-title="टंग्स्टेन" data-language-autonym="संस्कृतम्" data-language-local-name="Sanskriet" class="interlanguage-link-target"><span>संस्कृतम्</span></a></li><li class="interlanguage-link interwiki-sat mw-list-item"><a href="https://sat.wikipedia.org/wiki/%E1%B1%B4%E1%B1%9F%E1%B1%B8%E1%B1%9C%E1%B1%9F%E1%B1%A5%E1%B1%B4%E1%B1%9F%E1%B1%B1" title="ᱴᱟᱸᱜᱟᱥᱴᱟᱱ – Santali" lang="sat" hreflang="sat" data-title="ᱴᱟᱸᱜᱟᱥᱴᱟᱱ" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="Santali" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Tungstenu" title="Tungstenu – Sardijns" lang="sc" hreflang="sc" data-title="Tungstenu" data-language-autonym="Sardu" data-language-local-name="Sardijns" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Tungstenu" title="Tungstenu – Siciliaans" lang="scn" hreflang="scn" data-title="Tungstenu" data-language-autonym="Sicilianu" data-language-local-name="Siciliaans" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Tungsten" title="Tungsten – Schots" lang="sco" hreflang="sco" data-title="Tungsten" data-language-autonym="Scots" data-language-local-name="Schots" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Volfram" title="Volfram – Servo-Kroatisch" lang="sh" hreflang="sh" data-title="Volfram" 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/Tungsten" title="Tungsten – Simple English" lang="en-simple" hreflang="en-simple" data-title="Tungsten" 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/Volfr%C3%A1m" title="Volfrám – Slowaaks" lang="sk" hreflang="sk" data-title="Volfrám" 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/Volfram" title="Volfram – Sloveens" lang="sl" hreflang="sl" data-title="Volfram" data-language-autonym="Slovenščina" data-language-local-name="Sloveens" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Tungsten" title="Tungsten – Somalisch" lang="so" hreflang="so" data-title="Tungsten" data-language-autonym="Soomaaliga" data-language-local-name="Somalisch" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Tungsteni" title="Tungsteni – Albanees" lang="sq" hreflang="sq" data-title="Tungsteni" data-language-autonym="Shqip" data-language-local-name="Albanees" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%84%D1%80%D0%B0%D0%BC" title="Волфрам – Servisch" lang="sr" hreflang="sr" data-title="Волфрам" 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-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Wolfram" title="Wolfram – Saterfries" lang="stq" hreflang="stq" data-title="Wolfram" data-language-autonym="Seeltersk" data-language-local-name="Saterfries" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Volfram" title="Volfram – Zweeds" lang="sv" hreflang="sv" data-title="Volfram" data-language-autonym="Svenska" data-language-local-name="Zweeds" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Wolframi" title="Wolframi – Swahili" lang="sw" hreflang="sw" data-title="Wolframi" data-language-autonym="Kiswahili" data-language-local-name="Swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%A4%E0%AE%99%E0%AF%8D%E0%AE%95%E0%AF%81%E0%AE%A4%E0%AE%A9%E0%AF%8D" title="தங்குதன் – Tamil" lang="ta" hreflang="ta" data-title="தங்குதன்" 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%9F%E0%B0%82%E0%B0%97%E0%B1%8D%E2%80%8C%E0%B0%B8%E0%B1%8D%E0%B0%9F%E0%B0%A8%E0%B1%8D" title="టంగ్‌స్టన్ – Telugu" lang="te" hreflang="te" data-title="టంగ్‌స్టన్" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%84%D1%80%D0%B0%D0%BC" title="Волфрам – Tadzjieks" lang="tg" hreflang="tg" data-title="Волфрам" data-language-autonym="Тоҷикӣ" data-language-local-name="Tadzjieks" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%97%E0%B8%B1%E0%B8%87%E0%B8%AA%E0%B9%80%E0%B8%95%E0%B8%99" title="ทังสเตน – Thai" lang="th" hreflang="th" data-title="ทังสเตน" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Olframyo" title="Olframyo – Tagalog" lang="tl" hreflang="tl" data-title="Olframyo" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Tungsten" title="Tungsten – Turks" lang="tr" hreflang="tr" data-title="Tungsten" data-language-autonym="Türkçe" data-language-local-name="Turks" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Tataars" lang="tt" hreflang="tt" data-title="Вольфрам" data-language-autonym="Татарча / tatarça" data-language-local-name="Tataars" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-tyv mw-list-item"><a href="https://tyv.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Toevaans" lang="tyv" hreflang="tyv" data-title="Вольфрам" data-language-autonym="Тыва дыл" data-language-local-name="Toevaans" class="interlanguage-link-target"><span>Тыва дыл</span></a></li><li class="interlanguage-link interwiki-ug mw-list-item"><a href="https://ug.wikipedia.org/wiki/%DB%8B%D9%88%D9%84%D9%81%D8%B1%D8%A7%D9%85" title="ۋولفرام – Oeigoers" lang="ug" hreflang="ug" data-title="ۋولفرام" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="Oeigoers" class="interlanguage-link-target"><span>ئۇيغۇرچە / Uyghurche</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Oekraïens" lang="uk" hreflang="uk" data-title="Вольфрам" data-language-autonym="Українська" data-language-local-name="Oekraïens" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%B9%D9%86%DA%AF%D8%B3%D9%B9%D9%86" title="ٹنگسٹن – Urdu" lang="ur" hreflang="ur" data-title="ٹنگسٹن" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Volfram" title="Volfram – Oezbeeks" lang="uz" hreflang="uz" data-title="Volfram" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Oezbeeks" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Vol%27fram" title="Vol'fram – Wepsisch" lang="vep" hreflang="vep" data-title="Vol'fram" data-language-autonym="Vepsän kel’" data-language-local-name="Wepsisch" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Wolfram" title="Wolfram – Vietnamees" lang="vi" hreflang="vi" data-title="Wolfram" 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-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Tungsteno" title="Tungsteno – Waray" lang="war" hreflang="war" data-title="Tungsteno" data-language-autonym="Winaray" data-language-local-name="Waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E9%92%A8" title="钨 – Wuyu" lang="wuu" hreflang="wuu" data-title="钨" data-language-autonym="吴语" data-language-local-name="Wuyu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xal mw-list-item"><a href="https://xal.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%84%D1%80%D0%B0%D0%BC" title="Вольфрам – Kalmuks" lang="xal" hreflang="xal" data-title="Вольфрам" data-language-autonym="Хальмг" data-language-local-name="Kalmuks" class="interlanguage-link-target"><span>Хальмг</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%95%D7%95%D7%90%D7%9C%D7%A4%D7%A8%D7%90%D7%9D" title="וואלפראם – Jiddisch" lang="yi" hreflang="yi" data-title="וואלפראם" data-language-autonym="ייִדיש" data-language-local-name="Jiddisch" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/Wolframu" title="Wolframu – Yoruba" lang="yo" hreflang="yo" data-title="Wolframu" data-language-autonym="Yorùbá" data-language-local-name="Yoruba" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%92%A8" title="钨 – Chinees" lang="zh" hreflang="zh" data-title="钨" 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-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E9%8E%A2" title="鎢 – Klassiek Chinees" lang="lzh" hreflang="lzh" data-title="鎢" data-language-autonym="文言" data-language-local-name="Klassiek Chinees" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Wolfram" title="Wolfram – Minnanyu" lang="nan" hreflang="nan" data-title="Wolfram" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnanyu" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%8E%A2" title="鎢 – Kantonees" lang="yue" hreflang="yue" data-title="鎢" data-language-autonym="粵語" data-language-local-name="Kantonees" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/UmZithowe" title="UmZithowe – Zoeloe" lang="zu" hreflang="zu" data-title="UmZithowe" data-language-autonym="IsiZulu" data-language-local-name="Zoeloe" class="interlanguage-link-target"><span>IsiZulu</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q743#sitelinks-wikipedia" title="Taalkoppelingen bewerken" class="wbc-editpage">Koppelingen bewerken</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div 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data-file-height="350" /></a></span></span></div></div> </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"><table class="infobox" cellpadding="1" cellspacing="1"> <tbody><tr> <th class="infobox-kop notheme" style="background-color:#cedaf2; color:inherit; text-align:center; font-size:120%;" colspan="3">Wolfraam / Wolframium </th></tr> <tr> <td style="text-align:center;" colspan="3"><span> <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</a></th> <th colspan="16"></th> <th><a href="/wiki/Edelgas" title="Edelgas">18</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"><a href="/wiki/Waterstof_(element)" title="Waterstof (element)">H</a> </td> <th style="vertical-align: middle;"><a href="/wiki/Aardalkalimetaal" title="Aardalkalimetaal">2</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</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Koolstofgroep" title="Koolstofgroep">14</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Stikstofgroep" title="Stikstofgroep">15</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Zuurstofgroep" title="Zuurstofgroep">16</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Halogeen" title="Halogeen">17</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Helium" title="Helium">He</a> </td></tr> <tr> <th style="vertical-align: middle;"><a href="/wiki/Periode-2-element" title="Periode-2-element">2</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Lithium_(element)" title="Lithium (element)">Li</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Beryllium" title="Beryllium">Be</a> </td> <td colspan="10" align="center"> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Boor_(element)" title="Boor (element)">B</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Koolstof" title="Koolstof">C</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Stikstof_(element)" title="Stikstof (element)">N</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Zuurstof_(element)" title="Zuurstof (element)">O</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Fluor_(element)" title="Fluor (element)">F</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Neon_(element)" title="Neon (element)">Ne</a> </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"><a href="/wiki/Natrium" title="Natrium">Na</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Magnesium" title="Magnesium">Mg</a> </td> <th style="vertical-align: middle;"><a href="/wiki/Scandiumgroep" title="Scandiumgroep">3</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Titaangroep" title="Titaangroep">4</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Vanadiumgroep" title="Vanadiumgroep">5</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Chroomgroep" title="Chroomgroep">6</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Mangaangroep" title="Mangaangroep">7</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Platinagroep" title="Platinagroep">8</a> </th> <th style="vertical-align: middle;">9 </th> <th style="vertical-align: middle;">10 </th> <th style="vertical-align: middle;"><a href="/wiki/Kopergroep" title="Kopergroep">11</a> </th> <th style="vertical-align: middle;"><a href="/wiki/Zinkgroep" title="Zinkgroep">12</a> </th> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Aluminium" title="Aluminium">Al</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Silicium" title="Silicium">Si</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Fosfor" title="Fosfor">P</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Zwavel" title="Zwavel">S</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Chloor_(element)" title="Chloor (element)">Cl</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Argon" title="Argon">Ar</a> </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"><a href="/wiki/Kalium" title="Kalium">K</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Calcium" title="Calcium">Ca</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Scandium" title="Scandium">Sc</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Titanium" title="Titanium">Ti</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Vanadium" title="Vanadium">V</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Chroom_(element)" title="Chroom (element)">Cr</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Mangaan" title="Mangaan">Mn</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/IJzer_(element)" title="IJzer (element)">Fe</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Kobalt" title="Kobalt">Co</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Nikkel" title="Nikkel">Ni</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Koper_(element)" title="Koper (element)">Cu</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Zink_(element)" title="Zink (element)">Zn</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Gallium" title="Gallium">Ga</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Germanium" title="Germanium">Ge</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Arseen" title="Arseen">As</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Seleen" title="Seleen">Se</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Broom_(element)" title="Broom (element)">Br</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Krypton_(element)" title="Krypton (element)">Kr</a> </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"><a href="/wiki/Rubidium" title="Rubidium">Rb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Strontium" title="Strontium">Sr</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Yttrium" title="Yttrium">Y</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Zirkonium" title="Zirkonium">Zr</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Niobium" title="Niobium">Nb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Molybdeen" title="Molybdeen">Mo</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Technetium" title="Technetium">Tc</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Ruthenium" title="Ruthenium">Ru</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Rodium" title="Rodium">Rh</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Palladium_(element)" title="Palladium (element)">Pd</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Zilver" title="Zilver">Ag</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Cadmium" title="Cadmium">Cd</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Indium" title="Indium">In</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Tin_(element)" title="Tin (element)">Sn</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Antimoon" title="Antimoon">Sb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Telluur" title="Telluur">Te</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Jodium_(element)" title="Jodium (element)">I</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Xenon" title="Xenon">Xe</a> </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"><a href="/wiki/Cesium" title="Cesium">Cs</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><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"><a href="/wiki/Hafnium" title="Hafnium">Hf</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Tantaal" title="Tantaal">Ta</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#bff"><a class="mw-selflink selflink">W</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Renium" title="Renium">Re</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Osmium" title="Osmium">Os</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Iridium_(element)" title="Iridium (element)">Ir</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Platina" title="Platina">Pt</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Goud" title="Goud">Au</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Kwik" title="Kwik">Hg</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Thallium" title="Thallium">Tl</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Lood_(element)" title="Lood (element)">Pb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Bismut" title="Bismut">Bi</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Polonium" title="Polonium">Po</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Astaat" title="Astaat">At</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Radon_(element)" title="Radon (element)">Rn</a> </td></tr> <tr> <th style="vertical-align: middle;"><a href="/wiki/Periode-7-element" title="Periode-7-element">7</a> </th> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Francium" title="Francium">Fr</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Radium" title="Radium">Ra</a> </td> <td width="32" style="border:1px solid #aaaaaa; vertical-align: middle;" bgcolor="#777"><a href="/wiki/Actinide" title="Actinide">↓↓</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Rutherfordium" title="Rutherfordium">Rf</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Dubnium" title="Dubnium">Db</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Seaborgium" title="Seaborgium">Sg</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Bohrium" title="Bohrium">Bh</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Hassium" title="Hassium">Hs</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Meitnerium" title="Meitnerium">Mt</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Darmstadtium" title="Darmstadtium">Ds</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/R%C3%B6ntgenium" title="Röntgenium">Rg</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Copernicium" title="Copernicium">Cn</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Nihonium" title="Nihonium">Nh</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Flerovium" title="Flerovium">Fl</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Moscovium" title="Moscovium">Mc</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Livermorium" title="Livermorium">Lv</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Tennessine" title="Tennessine">Ts</a> </td> <td width="32" style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Oganesson" title="Oganesson">Og</a> </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"><a href="/wiki/Lanthaan" title="Lanthaan">La</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Cerium" title="Cerium">Ce</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Praseodymium" title="Praseodymium">Pr</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Neodymium" title="Neodymium">Nd</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Promethium" title="Promethium">Pm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Samarium" title="Samarium">Sm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Europium" title="Europium">Eu</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Terbium" title="Terbium">Tb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Dysprosium" title="Dysprosium">Dy</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Holmium" title="Holmium">Ho</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Erbium" title="Erbium">Er</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Thulium" title="Thulium">Tm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Ytterbium" title="Ytterbium">Yb</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><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"><a href="/wiki/Actinium" title="Actinium">Ac</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Thorium" title="Thorium">Th</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Protactinium" title="Protactinium">Pa</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Uranium" title="Uranium">U</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Neptunium" title="Neptunium">Np</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Plutonium" title="Plutonium">Pu</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Americium" title="Americium">Am</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Curium" title="Curium">Cm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Berkelium" title="Berkelium">Bk</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Californium" title="Californium">Cf</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Einsteinium" title="Einsteinium">Es</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Fermium" title="Fermium">Fm</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Mendelevium" title="Mendelevium">Md</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Nobelium" title="Nobelium">No</a> </td> <td style="border:1px solid #aaaaaa;" bgcolor="#999"><a href="/wiki/Lawrencium" title="Lawrencium">Lr</a> </td> <td> </td></tr></tbody></table></span> </td></tr> <tr> <td style="text-align:center; padding:0;" colspan="3"><span typeof="mw:File"><a href="/wiki/Bestand:Wolfram_evaporated_crystals_and_1cm3_cube.jpg" class="mw-file-description"><img alt="Staven wolfraam (zuiverheid: 99,98 % = 3N8) met opgedampte kristallen, gedeeltelijk voorzien van door oxidatie veroorzaakte aanloopkleuren. Ernaast een blokje zeer zuiver wolfraam (99,999 % = 5N) ter grootte van 1 cm3." src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Wolfram_evaporated_crystals_and_1cm3_cube.jpg/304px-Wolfram_evaporated_crystals_and_1cm3_cube.jpg" decoding="async" width="304" height="166" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Wolfram_evaporated_crystals_and_1cm3_cube.jpg/456px-Wolfram_evaporated_crystals_and_1cm3_cube.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Wolfram_evaporated_crystals_and_1cm3_cube.jpg/608px-Wolfram_evaporated_crystals_and_1cm3_cube.jpg 2x" data-file-width="5472" data-file-height="2988" /></a></span> </td></tr> <tr> <td style="text-align:center;" colspan="3"><div style="font-size:90%">Staven wolfraam (zuiverheid: 99,98 % = 3N8) met opgedampte kristallen, gedeeltelijk voorzien van door oxidatie veroorzaakte aanloopkleuren. Ernaast een blokje zeer zuiver wolfraam (99,999 % = 5N) ter grootte van 1 cm<sup>3</sup>.</div> </td></tr> <tr> <th class="infobox-kop notheme" style="background-color:#cedaf2; color:inherit; text-align:center;" colspan="3">Algemeen </th></tr> <tr> <th><a href="/wiki/Lijst_van_chemische_elementen" title="Lijst van chemische elementen">Naam</a> </th> <td colspan="2">Wolfraam / Wolframium </td></tr> <tr> <th><a href="/wiki/Lijst_van_chemische_elementen" title="Lijst van chemische elementen">Symbool</a> </th> <td colspan="2">W </td></tr> <tr> <th><a href="/wiki/Atoomnummer" title="Atoomnummer">Atoomnummer</a> </th> <td colspan="2">74 </td></tr> <tr> <th><a href="/wiki/Groep_(periodiek_systeem)" title="Groep (periodiek systeem)">Groep</a> </th> <td colspan="2"><a href="/wiki/Chroomgroep" title="Chroomgroep">Chroomgroep</a> </td></tr> <tr> <th><a href="/wiki/Periode_(scheikunde)" title="Periode (scheikunde)">Periode</a> </th> <td colspan="2"><a href="/wiki/Periode-6-element" title="Periode-6-element">Periode 6</a> </td></tr> <tr> <th><a href="/wiki/Blok_van_het_periodiek_systeem" title="Blok van het periodiek systeem">Blok</a> </th> <td colspan="2"><a href="/wiki/D-blok" class="mw-redirect" title="D-blok">D-blok</a> </td></tr> <tr> <th><a href="/wiki/Reeks_van_het_periodiek_systeem" title="Reeks van het periodiek systeem">Reeks</a> </th> <td colspan="2"><a href="/wiki/Overgangsmetaal" title="Overgangsmetaal">Overgangsmetalen</a> </td></tr> <tr> <th><a href="/wiki/Kleur" title="Kleur">Kleur</a> </th> <td colspan="2">Grijswit </td></tr> <tr> <th class="infobox-kop notheme" style="background-color:#cedaf2; color:inherit;" colspan="3">Chemische eigenschappen </th></tr> <tr> <th><a href="/wiki/Atoommassa" title="Atoommassa">Atoommassa</a> (<a href="/wiki/Atomaire_massa-eenheid" title="Atomaire massa-eenheid">u</a>) </th> <td colspan="2">183,84 </td></tr> <tr> <th><a href="/wiki/Elektronenconfiguratie" title="Elektronenconfiguratie">Elektronenconfiguratie</a> </th> <td colspan="2">[<a href="/wiki/Xenon" title="Xenon">Xe</a>]4f<sup>14</sup> 5d<sup>4</sup> 6s<sup>2</sup> </td></tr> <tr> <th><a href="/wiki/Oxidatietoestand" title="Oxidatietoestand">Oxidatietoestanden</a> </th> <td colspan="2">+6 </td></tr> <tr> <th><a href="/wiki/Elektronegativiteit" title="Elektronegativiteit">Elektronegativiteit</a> (<a href="/wiki/Schaal_van_Pauling" title="Schaal van Pauling">Pauling</a>) </th> <td colspan="2">2,36 </td></tr> <tr> <th><a href="/wiki/Atoomstraal" title="Atoomstraal">Atoomstraal</a> (<a href="/wiki/Picometer" title="Picometer">pm</a>) </th> <td colspan="2">139 </td></tr> <tr> <th>1e <a href="/wiki/Ionisatiepotentiaal" title="Ionisatiepotentiaal">ionisatiepotentiaal</a> (<a href="/wiki/Joule" title="Joule">kJ</a>·<a href="/wiki/Mol_(eenheid)" title="Mol (eenheid)">mol</a><sup>−1</sup>) </th> <td colspan="2">770 </td></tr> <tr> <th class="infobox-kop notheme" style="background-color:#cedaf2; color:inherit;" colspan="3">Fysische eigenschappen </th></tr> <tr> <th><a href="/wiki/Massadichtheid" title="Massadichtheid">Dichtheid</a> (<a href="/wiki/Kilogram" title="Kilogram">kg</a>·<a href="/wiki/Meter" title="Meter">m</a><sup>−3</sup>) </th> <td colspan="2">19300 </td></tr> <tr> <th><a href="/wiki/Hardheidsschaal_van_Mohs" title="Hardheidsschaal van Mohs">Hardheid</a> (Mohs) </th> <td colspan="2">7,5 </td></tr> <tr> <th><a href="/wiki/Smeltpunt" title="Smeltpunt">Smeltpunt</a> (<a href="/wiki/Kelvin_(eenheid)" title="Kelvin (eenheid)">K</a>) </th> <td colspan="2">3695 </td></tr> <tr> <th><a href="/wiki/Kookpunt" title="Kookpunt">Kookpunt</a> (K) </th> <td colspan="2">5828 </td></tr> <tr> <th><a href="/wiki/Aggregatietoestand" title="Aggregatietoestand">Aggregatietoestand</a> </th> <td colspan="2">Vast </td></tr> <tr> <th><a href="/wiki/Smeltwarmte" title="Smeltwarmte">Smeltwarmte</a> (kJ·mol<sup>−1</sup>) </th> <td colspan="2">35,4 </td></tr> <tr> <th><a href="/wiki/Verdampingswarmte" title="Verdampingswarmte">Verdampingswarmte</a> (kJ·mol<sup>−1</sup>) </th> <td colspan="2">824,0 </td></tr> <tr> <th><a href="/wiki/Kristalstructuur" title="Kristalstructuur">Kristalstructuur</a> </th> <td colspan="2"><a href="/wiki/Kubisch_ruimtelijk_gecentreerd" title="Kubisch ruimtelijk gecentreerd">k.r.g.</a> (bij kamertemperatuur) </td></tr> <tr> <th><a href="/wiki/Molair_volume" title="Molair volume">Molair volume</a> (m<sup>3</sup>·mol<sup>−1</sup>) </th> <td colspan="2">9,53 · 10<sup>−6</sup> </td></tr> <tr> <th><a href="/wiki/Geluidssnelheid" title="Geluidssnelheid">Geluidssnelheid</a> (m·<a href="/wiki/Seconde" title="Seconde">s</a><sup>−1</sup>) </th> <td colspan="2">5174 </td></tr> <tr> <th><a href="/wiki/Soortelijke_warmte" title="Soortelijke warmte">Specifieke warmte</a> (J·kg<sup>−1</sup>·K<sup>−1</sup>) </th> <td colspan="2">130 </td></tr> <tr> <th><a href="/wiki/Elektrische_weerstand_(eigenschap)" title="Elektrische weerstand (eigenschap)">Elektrische weerstand</a> (μ<a href="/wiki/Ohm_(eenheid)" title="Ohm (eenheid)">Ω</a>·<a href="/wiki/Centimeter" title="Centimeter">cm</a>) </th> <td colspan="2">5,4 </td></tr> <tr> <th><a href="/wiki/Warmteoverdracht" title="Warmteoverdracht">Warmtegeleiding</a> (<a href="/wiki/Watt_(eenheid)" title="Watt (eenheid)">W</a>·m<sup>−1</sup>·K<sup>−1</sup>) </th> <td colspan="2">170 </td></tr> <tr> <td class="ta-center" colspan="3"><small><a href="/wiki/SI-stelsel" title="SI-stelsel">SI</a>-eenheden en <a href="/wiki/Standaardomstandigheden" title="Standaardomstandigheden">standaardtemperatuur en -druk</a> worden gebruikt,<br />tenzij anders aangegeven</small> </td></tr> <tr> <td class="infobox-kop notheme center" style="background-color:#cedaf2; color:inherit;" colspan="3"> <table cellspacing="0" cellpadding="0"> <tbody><tr> <td style="vertical-align:middle;"><b>Portaal</b>  <span class="noviewer" typeof="mw:File"><a href="/wiki/Bestand:Portal.svg" class="mw-file-description" title="Portaalicoon"><img alt="Portaalicoon" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Portal.svg/22px-Portal.svg.png" decoding="async" width="22" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Portal.svg/33px-Portal.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Portal.svg/44px-Portal.svg.png 2x" data-file-width="36" data-file-height="32" /></a></span>   </td> <td class="ta-left"><b><a href="/wiki/Portaal:Scheikunde" title="Portaal:Scheikunde">Scheikunde</a> </b> </td></tr></tbody></table> </td></tr> </tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Bestand:Tungsten_filament_in_halogen_lamp.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/25/Tungsten_filament_in_halogen_lamp.JPG/260px-Tungsten_filament_in_halogen_lamp.JPG" decoding="async" width="260" height="264" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/25/Tungsten_filament_in_halogen_lamp.JPG/390px-Tungsten_filament_in_halogen_lamp.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/25/Tungsten_filament_in_halogen_lamp.JPG/520px-Tungsten_filament_in_halogen_lamp.JPG 2x" data-file-width="1110" data-file-height="1125" /></a><figcaption>Gebruik van wolfraam als <a href="/wiki/Gloeidraad" title="Gloeidraad">gloeidraad</a> in een halogeenlamp</figcaption></figure> <p><b>Wolfraam</b> is een <a href="/wiki/Scheikundig_element" class="mw-redirect" title="Scheikundig element">scheikundig element</a> met symbool <b>W</b> en <a href="/wiki/Atoomnummer" title="Atoomnummer">atoomnummer</a> 74. Het is een grijswit <a href="/wiki/Overgangsmetaal" title="Overgangsmetaal">overgangsmetaal</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Naamgeving">Naamgeving</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=1" title="Bewerk dit kopje: Naamgeving" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=1" title="De broncode bewerken van de sectie: Naamgeving"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In het <a href="/wiki/Engels" title="Engels">Engels</a> en in veel romaanse talen heet het metaal <i>tungsten</i>. Men komt dit woord weleens in vertalingen tegen. <i>Tung sten</i> is <a href="/wiki/Zweeds" title="Zweeds">Zweeds</a> voor <i>zware steen</i>, de oorspronkelijke benaming die rond 1758 werd gegeven aan het <a href="/wiki/Mineraal_(geologie)" title="Mineraal (geologie)">mineraal</a> dat nu bekendstaat als <a href="/wiki/Scheeliet" title="Scheeliet">scheeliet</a>, een verbinding van calcium en wolfraam.<sup id="cite_ref-CRC_1-0" class="reference"><a href="#cite_note-CRC-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> De naam wolfraam komt van Wolf en Rahm (room, oude benaming voor schuim), een <a href="/wiki/Duits" title="Duits">Duitse</a> vertaling van het <a href="/wiki/Latijn" title="Latijn">Latijnse</a> <i>lupi spuma</i>, omdat het een vretend schuim vormt bij de tinbereiding (het zogenaamde <a href="/wiki/Wolframiet_(oxide)" title="Wolframiet (oxide)">wolframiet</a>). </p> <div class="mw-heading mw-heading2"><h2 id="Ontdekking">Ontdekking</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=2" title="Bewerk dit kopje: Ontdekking" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=2" title="De broncode bewerken van de sectie: Ontdekking"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In <a href="/wiki/1779" title="1779">1779</a> onderzocht de Engels-Ierse <a href="/wiki/Alchemie" title="Alchemie">alchemist</a> <a href="/wiki/Peter_Woulfe" title="Peter Woulfe">Peter Woulfe</a> het mineraal dat nu bekendstaat als <a href="/wiki/Wolframiet_(sulfide)" title="Wolframiet (sulfide)">wolframiet</a> en concludeerde dat het een nieuwe substantie moest bevatten. Twee jaar later, in <a href="/wiki/1781" title="1781">1781</a>, ontdekte de Zweedse chemicus <a href="/wiki/Carl_Wilhelm_Scheele" title="Carl Wilhelm Scheele">Scheele</a> dat een nieuw zuur gemaakt kon worden van <i>tung sten</i>, het later naar hem genoemde mineraal <a href="/wiki/Scheeliet" title="Scheeliet">scheeliet</a>. Scheele en <a href="/wiki/Torbern_Olof_Bergman" title="Torbern Olof Bergman">Bergman</a> suggereerden de mogelijkheid een nieuw metaal te verkrijgen door dit zuur te reduceren. In <a href="/wiki/1783" title="1783">1783</a> toonden twee <a href="/wiki/Spanje" title="Spanje">Spaanse</a> chemici, de broers <a href="/w/index.php?title=Juan_Jos%C3%A9_Elhuyar&action=edit&redlink=1" class="new" title="Juan José Elhuyar (de pagina bestaat niet)">Juan José</a> en <a href="/w/index.php?title=Fausto_Elhuyar&action=edit&redlink=1" class="new" title="Fausto Elhuyar (de pagina bestaat niet)">Fausto Elhuyar</a>, aan dat dat zuur overeenkwam met het zuur dat zij verkregen uit wolframiet, en in datzelfde jaar waren zij in staat om daaruit wolfraam te isoleren door het te reduceren met <a href="/wiki/Houtskool" title="Houtskool">houtskool</a>.<sup id="cite_ref-CRC_1-1" class="reference"><a href="#cite_note-CRC-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Toepassingen">Toepassingen</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=3" title="Bewerk dit kopje: Toepassingen" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=3" title="De broncode bewerken van de sectie: Toepassingen"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>De bekendste industriële toepassing van wolfraam is het gloeidraadje in <a href="/wiki/Gloeilamp" title="Gloeilamp">gloeilampen</a>. Het extreem hoge smeltpunt (hoogste van alle elementen na koolstof, namelijk 3422 °C) maakt het hiervoor zeer geschikt. Andere toepassingen van wolfraam zijn: </p> <ul><li>In <a href="/wiki/Staal_(legering)" title="Staal (legering)">staal</a><a href="/wiki/Legering" title="Legering">legeringen</a> wordt wolfraam gebruikt om het materiaal harder en hittebestendiger te maken. Bij temperaturen boven de 2000 °C blijft het de hardheid behouden, waardoor het zeer geschikt is als pantserstaal.</li> <li>Als <a href="/wiki/Katalysator" title="Katalysator">katalysator</a> in de olie-industrie. Nikkelwolfraamsulfide verwijdert zwavel en stikstof uit aardoliefracties, en hydrogeneert onverzadigde verbindingen bij het hydro<a href="/wiki/Kraken_(scheikunde)" title="Kraken (scheikunde)">kraken</a> van olie.</li> <li>In de sport wordt het gebruikt voor de vervaardiging van <a href="/wiki/Dart_(pijl)" title="Dart (pijl)">darts</a> in combinatie met nikkel en koper in een verhouding van maximaal 97% wolfraam, nikkel en een rest van koper.</li> <li>Doordat wolfraam dezelfde <a href="/wiki/Uitzettingsco%C3%ABffici%C3%ABnt" title="Uitzettingscoëfficiënt">uitzettingscoëfficiënt</a> heeft als glas, kan het gebruikt worden in gewapend glas.</li> <li>Legeringen van wolfraam met <a href="/wiki/Zirkonium" title="Zirkonium">zirkonium</a>, <a href="/wiki/Niobium" title="Niobium">niobium</a>, <a href="/wiki/Tantaal" title="Tantaal">tantaal</a> of <a href="/wiki/Hafnium" title="Hafnium">hafnium</a> zijn zeer hittebestendig en worden daarom gebruikt in uitlaatpijpen van raketten en straalmotoren.</li> <li>Wolfraam wordt in verschillende legeringen als elektrode bij TIG-<a href="/wiki/Lassen" title="Lassen">lassen</a> gebruikt. Vanwege het hoge smeltpunt is wolfraam uitermate geschikt. Afhankelijk van de stroomsoort, <a href="/wiki/Gelijkstroom" title="Gelijkstroom">gelijkstroom</a> of <a href="/wiki/Wisselstroom" title="Wisselstroom">wisselstroom</a>, worden verschillende legeringen gebruikt. <ul><li>gelijkstroom: wolfraam + 1%-3% <a href="/wiki/Thorium" title="Thorium">thorium</a>. Elektrodes met lanthaanoxide (ca. 1,5%) zijn een goed alternatief.</li> <li>wisselstroom: 100% wolfraam of wolfraam + 0,8% <a href="/wiki/Zirkonium" title="Zirkonium">zirkonium</a>.</li> <li>In nieuwere types elektrodes worden ook <a href="/wiki/Lanthaan(III)oxide" title="Lanthaan(III)oxide">lanthaan(III)oxide</a>, <a href="/wiki/Yttriumoxide" title="Yttriumoxide">yttriumoxide</a> en <a href="/wiki/Cerium(III)oxide" title="Cerium(III)oxide">cerium(III)oxide</a> toegevoegd.</li></ul></li> <li><a href="/wiki/Wolfraamcarbide" title="Wolfraamcarbide">Wolfraamcarbide</a> (WC en W<sub>2</sub>C) dat, met kobalt als bindmiddel, bekend is onder de naam <i>hardmetaal</i>, is een zeer hard materiaal dat gebruikt wordt in boor- en snijgereedschap, zoals frezen voor hout en metaalbewerking en tandartsboren. Het wordt ook gebruikt voor de bal in een <a href="/wiki/Balpen" title="Balpen">balpen</a>.</li> <li>Wolfraam en legeringen daarvan (zoals WNiFe, WNiMoFe of WNiCu), worden toegepast bij de afscherming van ioniserende straling, zoals in <a href="/wiki/Collimator" title="Collimator">collimatoren</a>. Vanwege de hoge dichtheid worden dergelijke legeringen ook toegepast als balansgewicht in vliegwielen van motoren, en om propellers en scheepsroeren uit te balanceren. Door de toevoeging van nikkel en ijzer of koper wordt het materiaal beter <a href="/wiki/Verspanen" title="Verspanen">verspaanbaar</a>.</li> <li>Wolfraam wordt ook ingebakken in keramische gloei-elementjes om de e-liquids in elektronische sigaretten te laten verdampen.</li> <li>Munitie voor militaire doeleinden bevat wel vaker een kern van wolfraam. De weinige vervorming door hitte en inslag vanwege de hoge smelttemperatuur en hardheid maakt deze geschikt voor hogere penetratie in gehomologeerd staal.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Winning">Winning</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=4" title="Bewerk dit kopje: Winning" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=4" title="De broncode bewerken van de sectie: Winning"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Wolfraammijnen zijn vaak kleine ondergrondse mijnen. Er bestaan echter ook open mijnen. Het gesteente waarin wolfraam voorkomt wordt eerst in kleinere stukken geblazen met behulp van springstof. Deze grote blokken worden daarna vermalen tot kleinere stukken. Wolfraam wordt uitsluitend gewonnen uit twee <a href="/wiki/Ertsen" class="mw-redirect" title="Ertsen">ertsen</a>, namelijk <a href="/wiki/Wolframiet_(oxide)" title="Wolframiet (oxide)">wolframiet</a> en <a href="/wiki/Scheeliet" title="Scheeliet">scheeliet</a>. Om wolfraam uit wolframiet te winnen, worden <a href="/w/index.php?title=Gravitationele_extractie&action=edit&redlink=1" class="new" title="Gravitationele extractie (de pagina bestaat niet)">gravitationele extractiemethodes</a> zoals spiralen, kegels en tafels gebruikt, vaak in combinatie met <a href="/w/index.php?title=Magnetische_extractie&action=edit&redlink=1" class="new" title="Magnetische extractie (de pagina bestaat niet)">magnetische extractiemethoden</a>. Om wolfraam uit scheeliet te verkrijgen wordt vaak gebruikgemaakt van <a href="/w/index.php?title=Schuimflotatie&action=edit&redlink=1" class="new" title="Schuimflotatie (de pagina bestaat niet)">schuimflotatie</a>. Bij deze methode wordt vaak gebruikgemaakt van de <a href="/wiki/Alkali" class="mw-redirect" title="Alkali">alkali</a>. </p><p>Bij deze methodes wordt echter nog geen pure wolfraam, maar <a href="/w/index.php?title=Wolfraamoxide&action=edit&redlink=1" class="new" title="Wolfraamoxide (de pagina bestaat niet)">wolfraamoxide</a> geëxtraheerd. De wolfraamoxide wordt vervolgens tot 550-850 °C verhit in stromend waterstof. Wolfraamoxide en waterstof reageren bij die temperatuur tot pure wolfraam en water. De <a href="/wiki/Chemische_reactievergelijking" class="mw-redirect" title="Chemische reactievergelijking">chemische reactievergelijking</a> voor het proces is als volgt: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {WO3 + 3 H2 -> W + 3 H2O}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msubsup> <mtext>WO</mtext> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mspace width="0pt" height="0pt" depth=".2em" /> </mrow> </msubsup> <mo>+</mo> <mn>3</mn> <mspace width="thinmathspace" /> <msubsup> <mtext>H</mtext> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mspace width="0pt" height="0pt" depth=".2em" /> </mrow> </msubsup> <mo stretchy="false">⟶</mo> <mtext>W</mtext> <mo>+</mo> <mn>3</mn> <mspace width="thinmathspace" /> <msubsup> <mtext>H</mtext> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mspace width="0pt" height="0pt" depth=".2em" /> </mrow> </msubsup> <mtext>O</mtext> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\ce {WO3 + 3 H2 -> W + 3 H2O}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/05d830c023d791926fcfcce1b05a59e7a286e301" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:28.919ex; height:2.843ex;" alt="{\displaystyle {\ce {WO3 + 3 H2 -> W + 3 H2O}}}"></span></dd></dl> <p>De laatste stap in het proces is de scheiding van wolfraam en water. </p> <div class="mw-heading mw-heading2"><h2 id="Opmerkelijke_eigenschappen">Opmerkelijke eigenschappen</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=5" title="Bewerk dit kopje: Opmerkelijke eigenschappen" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=5" title="De broncode bewerken van de sectie: Opmerkelijke eigenschappen"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Wolfraam heeft van alle metalen het hoogste smeltpunt (3695 K) en is goed bestand tegen corrosie. Alleen sommige minerale zuren zijn in staat het metaal aan te tasten. Bij blootstelling aan de lucht vormt het een beschermende oxidelaag. In legeringen kan toevoeging van een kleine hoeveelheid wolfraam de hardheid sterk doen toenemen. Wolfraam heeft ook een zeer hoog atoomnummer waardoor het geschikt is als <a href="/wiki/Anode" title="Anode">anodemateriaal</a> in een <a href="/wiki/R%C3%B6ntgenbuis" title="Röntgenbuis">röntgenbuis</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Goudvervalsing">Goudvervalsing</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=6" title="Bewerk dit kopje: Goudvervalsing" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=6" title="De broncode bewerken van de sectie: Goudvervalsing"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Wolfraam heeft vrijwel dezelfde <a href="/wiki/Dichtheid_(natuurkunde)" class="mw-redirect" title="Dichtheid (natuurkunde)">dichtheid</a> als <a href="/wiki/Goud" title="Goud">goud</a> (goud 19320 kg/m³, wolfraam 19300 kg/m³) maar goud is ongeveer duizend keer zo duur. Daarom is wolfraam, zij het sporadisch, gebruikt om goudstaven te vervalsen door de binnenkant met wolfraam te vullen.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Ultrasoon_onderzoek" title="Ultrasoon onderzoek">Ultrasoon onderzoek</a> is een betrouwbare, niet-destructieve methode om dergelijke vervalsingen aan te tonen.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Verschijning">Verschijning</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=7" title="Bewerk dit kopje: Verschijning" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=7" title="De broncode bewerken van de sectie: Verschijning"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>De meest voorkomende wolfraam bevattende <a href="/wiki/Mineraal_(geologie)" title="Mineraal (geologie)">mineralen</a> zijn <a href="/wiki/Wolframiet_(sulfide)" title="Wolframiet (sulfide)">wolframiet</a>, <a href="/wiki/Scheeliet" title="Scheeliet">scheeliet</a>, <a href="/wiki/Ferberiet" title="Ferberiet">ferberiet</a> en <a href="/wiki/Huebneriet" class="mw-redirect" title="Huebneriet">huebneriet</a>.<sup id="cite_ref-CRC_1-2" class="reference"><a href="#cite_note-CRC-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Grote hoeveelheden hiervan worden aangetroffen in <a href="/wiki/Volksrepubliek_China" title="Volksrepubliek China">China</a> (75% van de wereldproductie), <a href="/wiki/Canada" title="Canada">Canada</a>, <a href="/wiki/Bolivia" title="Bolivia">Bolivia</a>, het westen van de <a href="/wiki/Verenigde_Staten" title="Verenigde Staten">Verenigde Staten</a>, <a href="/wiki/Oostenrijk" title="Oostenrijk">Oostenrijk</a>, <a href="/wiki/Portugal" title="Portugal">Portugal</a>, <a href="/wiki/Rusland" title="Rusland">Rusland</a> en <a href="/wiki/Zuid-Korea" title="Zuid-Korea">Zuid-Korea</a>. Op commerciële basis wordt wolfraam gewonnen door het oxide te reduceren met <a href="/wiki/Waterstof_(element)" title="Waterstof (element)">waterstof</a> of <a href="/wiki/Koolstof" title="Koolstof">koolstof</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Isotopen">Isotopen</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=8" title="Bewerk dit kopje: Isotopen" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=8" title="De broncode bewerken van de sectie: Isotopen"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="hatnote" style="margin-bottom:0.5em; padding:0.5em 0 0.5em 1.6em; font-size:95%;" role="note"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/1rightarrow_blue.svg/15px-1rightarrow_blue.svg.png" decoding="async" width="15" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/1rightarrow_blue.svg/23px-1rightarrow_blue.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ee/1rightarrow_blue.svg/30px-1rightarrow_blue.svg.png 2x" data-file-width="480" data-file-height="480" /></span></span> <i>Zie <a href="/wiki/Isotopen_van_wolfraam" title="Isotopen van wolfraam">Isotopen van wolfraam</a> voor het hoofdartikel over dit onderwerp.</i></div> <table class="wikitable" style="font-size:90%;"> <tbody><tr> <th colspan="6">Stabielste isotopen </th></tr> <tr> <th><a href="/wiki/Isotoop" title="Isotoop">Iso</a> </th> <th><a href="/wiki/Relatieve_aanwezigheid" title="Relatieve aanwezigheid">RA</a> (%) </th> <th><a href="/wiki/Halveringstijd" title="Halveringstijd">Halveringstijd</a> </th> <th><a href="/wiki/Vervalvorm" class="mw-redirect" title="Vervalvorm">VV</a> </th> <th><a href="/wiki/Vervalenergie" title="Vervalenergie">VE</a> (M<a href="/wiki/Elektronvolt" title="Elektronvolt">eV</a>) </th> <th><a href="/wiki/Vervalproduct" title="Vervalproduct">VP</a> </th></tr> <tr> <td><sup>180</sup>W </td> <td>0,120 </td> <td>1,8·10<sup>18</sup> <a href="/wiki/Jaar" title="Jaar">j</a> </td> <td><a href="/wiki/Alfastraling" title="Alfastraling">α</a> </td> <td>2,516 </td> <td><a href="/wiki/Hafnium-176" title="Hafnium-176"><sup>176</sup>Hf</a> </td></tr> <tr> <td><sup>181</sup>W </td> <td><a href="/wiki/Synthetische_radio-isotoop" title="Synthetische radio-isotoop">syn</a> </td> <td>121,2 <a href="/wiki/Dag" title="Dag">d</a> </td> <td><a href="/wiki/Elektronenvangst" title="Elektronenvangst">EV</a> </td> <td>0,188 </td> <td><a href="/wiki/Tantaal-181" title="Tantaal-181"><sup>181</sup>Ta</a> </td></tr> <tr> <td><sup>182</sup>W </td> <td>26,498 </td> <td colspan="4">stabiel met 108 neutronen </td></tr> <tr> <td><sup>183</sup>W </td> <td>14,314 </td> <td colspan="4">stabiel met 109 neutronen </td></tr> <tr> <td><sup>184</sup>W </td> <td>30,642 </td> <td colspan="4">stabiel met 110 neutronen </td></tr> <tr> <td><sup>185</sup>W </td> <td><a href="/wiki/Synthetische_radio-isotoop" title="Synthetische radio-isotoop">syn</a> </td> <td>75,1 <a href="/wiki/Dag" title="Dag">d</a> </td> <td><a href="/wiki/B%C3%A8taverval" title="Bètaverval">β<sup>−</sup></a> </td> <td>0,433 </td> <td><a href="/wiki/Renium-185" title="Renium-185"><sup>185</sup>Re</a> </td></tr> <tr> <td><sup>186</sup>W </td> <td>28,426 </td> <td colspan="4">stabiel met 112 neutronen </td></tr></tbody></table> <p>In de natuur komen vier stabiele isotopen en één radioactieve isotoop voor met een extreem lange <a href="/wiki/Halveringstijd" title="Halveringstijd">halveringstijd</a> zodat ze als stabiel kunnen worden beschouwd. Daarnaast zijn er nog een 25-tal minder stabiele isotopen bekend. </p> <div class="mw-heading mw-heading2"><h2 id="Toxicologie_en_veiligheid">Toxicologie en veiligheid</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=9" title="Bewerk dit kopje: Toxicologie en veiligheid" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=9" title="De broncode bewerken van de sectie: Toxicologie en veiligheid"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Wolfraam is een volkomen veilig metaal. Er zijn geen speciale voorzorg- en veiligheidsmaatregelen bij het gebruik en verwerken van wolfraam noodzakelijk. </p> <div class="mw-heading mw-heading2"><h2 id="Externe_links">Externe links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wolfraam&veaction=edit&section=10" title="Bewerk dit kopje: Externe links" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Wolfraam&action=edit&section=10" title="De broncode bewerken van de sectie: Externe links"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li class="mw-empty-elt"></li> <li><a rel="nofollow" class="external text" href="http://www.lenntech.nl/periodiek/elementen/W.htm"><i>Lenntech.nl</i> - wolfraam</a></li> <li><style data-mw-deduplicate="TemplateStyles:r67679320">.mw-parser-output .taalaanduiding{font-family:sans-serif;font-size:85%;cursor:help;color:var(--color-subtle,#555)}.mw-parser-output .taalaanduiding span{border-bottom:1px dotted var(--color-subtle,#555)}</style><span class="taalaanduiding" title="Taal: Engels">(<span>en</span>) </span><a rel="nofollow" class="external text" href="http://environmentalchemistry.com/yogi/periodic/W.html"><i>EnvironmentalChemistry.com</i> - wolfraam</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r67679320"><span class="taalaanduiding" title="Taal: Engels">(<span>en</span>) </span><a rel="nofollow" class="external text" href="http://www.webelements.com/webelements/elements/text/W/index.html"><i>WebElements.com</i> - wolfraam</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r67679320"><span class="taalaanduiding" title="Taal: Engels">(<span>en</span>) </span> <a rel="nofollow" class="external text" href="http://www.itia.info/mining-beneficiation.html">Tungsten Mining & Benefication op Itia.info</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r67679320"><span class="taalaanduiding" title="Taal: Engels">(<span>en</span>) </span> <a rel="nofollow" class="external text" href="http://www.chemguide.co.uk/inorganic/extraction/tungsten.html">Extraction of Tungsten op Chemguide.com</a></li></ul> <div class="toccolours appendix" role="presentation" style="font-size:90%; margin:1em 0 -0.5em; clear:both;"> <div><span style="font-weight:bold">Bronnen, noten en/of referenties</span></div> <div class="reflist" style="list-style-type: decimal;"><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-CRC-1"><span class="mw-cite-backlink">↑ <a href="#cite_ref-CRC_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-CRC_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-CRC_1-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><span class="citation" id="CITEREFHammond1975_B-38,_B-39"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r67679320"><span class="taalaanduiding" title="Taal: Engels">(<span>en</span>) </span><span style="font-variant:small-caps;">Hammond, C. R.</span> (1975-1976). <cite><i><a href="/wiki/CRC_Handbook_of_Chemistry_and_Physics" title="CRC Handbook of Chemistry and Physics">CRC Handbook of Chemistry and Physics</a></i></cite>. CRC Press, B-38, B-39.</span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><span class="citation" id="CITEREFVan_Toor2008_p._154"><span style="font-variant:small-caps;">Van Toor, Jacques</span> (2008). <cite><i>Geschiedenis van de scheikunde</i></cite>. Veen Magazines B.V., Diemen, p. 154. <span class="ISBN"><a href="/wiki/Speciaal:Boekbronnen/9789085711773" title="Speciaal:Boekbronnen/9789085711773">ISBN 9789085711773</a></span>. NUR 913.</span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><span class="citation" id="CITEREFWile2012"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r67679320"><span class="taalaanduiding" title="Taal: Engels">(<span>en</span>) </span><span style="font-variant:small-caps;">Wile, Rob</span>, <a rel="nofollow" class="external text" href="http://www.businessinsider.com/tungsten-filled-gold-bars-found-in-new-york-2012-9?IR=T">How A Manhattan Jeweler Wound Up With Gold Bars Filled With Tungsten</a>. Business Insider UK (<span class="mw-formatted-date" title="2012-09-19">19 september 2012</span>). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20150924144311/http://www.businessinsider.com/tungsten-filled-gold-bars-found-in-new-york-2012-9?IR=T">Gearchiveerd</a> op <span class="mw-formatted-date" title="2015-09-24">24 september 2015</span>. Geraadpleegd op <span class="mw-formatted-date" title="2015-09-04">4 september 2015</span>. </span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><span class="citation" id="CITEREFSucheckiFout:_ongeldige_tijd."><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r67679320"><span class="taalaanduiding" title="Taal: Engels">(<span>en</span>) </span><span style="font-variant:small-caps;">Suchecki, Bron</span>, <a rel="nofollow" class="external text" href="http://www.perthmintbullion.com/blog/blog/12-03-26/Fake_Bars_-_The_Facts.aspx">Fake Bars - The Facts</a>. <i>Perth Mint Bullion Blog</i>. The Perth Mint (<span class="mw-formatted-date" title="2012-03-26">26 maart 2012</span>). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120505214441/http://www.perthmintbullion.com:80/blog/blog/12-03-26/Fake_Bars_-_The_Facts.aspx?">Gearchiveerd</a> op <span class="mw-formatted-date" title="2012-05-05">5 mei 2012</span>. Geraadpleegd op <span class="mw-formatted-date" title="2015-09-04">4 september 2015</span>. </span></span> </li> </ol></div></div> </div> <style data-mw-deduplicate="TemplateStyles:r67837862">.mw-parser-output .navigatie{position:relative;clear:both;overflow:auto;margin:1em auto -0.5em;padding:2px;background-color:var(--background-color-neutral-subtle,#f8f9fa);border:1px solid var(--border-color-base,#a2a9b1);text-align:center;font-size:87%}.mw-parser-output .navigatie-bewerken{margin-left:0.5em}.mw-parser-output .navigatie-bewerken .mw-ui-icon::before{background-size:0.9em}.mw-parser-output .navigatie-afb-links,.mw-parser-output .navigatie-afb-rechts{position:absolute}.mw-parser-output .navigatie-afb-rechts{right:2px}.mw-parser-output .navigatie-afb-groot{float:right;padding-left:0.5em}.mw-parser-output .navigatie-titel{background-color:#ddeef8;padding:2px 5.5em;font-weight:bold}.mw-parser-output .navigatie-inhoud{padding:0.5em}.mw-parser-output .navigatie-inhoud 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systeem">geschiedenis</a></td></tr><tr><td class="links"><b>Isotopentabel:</b></td><td class="rechts"><a href="/wiki/Isotopentabel" title="Isotopentabel">op element (compleet</a> <a href="/wiki/Isotopentabel_(in_delen)" title="Isotopentabel (in delen)">/ in delen)</a> · <a href="/wiki/Isotopenkaart" title="Isotopenkaart">op atoommassa</a></td></tr><tr><td class="links"><b>Zie ook:</b></td><td class="rechts"><a href="/wiki/Lijst_van_chemische_elementen" title="Lijst van chemische elementen">lijst van chemische elementen</a> · <a href="/wiki/Abundantie_(scheikunde)" title="Abundantie (scheikunde)">abundantie</a></td></tr></tbody></table> </div></div> <div class="interProject commons mw-list-item" style="display:none;"><a href="https://commons.wikimedia.org/wiki/Category:Tungsten#mw-subcategories" class="extiw" title="commons:Category:Tungsten">Mediabestanden</a></div> <div class="interProjectTemplate interProject-groot toccolours" style="display:flex; gap:1em; align-items:center; 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