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cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Properties subsection</span> </button> <ul id="toc-Properties-sublist" class="vector-toc-list"> <li id="toc-Combustion" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Combustion"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Combustion</span> </div> </a> <ul id="toc-Combustion-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Compounds" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Compounds"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>Compounds</span> </div> </a> <ul id="toc-Compounds-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Acids" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Acids"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>Acids</span> </div> </a> <ul id="toc-Acids-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Isotopes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Isotopes"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.4</span> <span>Isotopes</span> </div> </a> <ul id="toc-Isotopes-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Hydrogen_in_nature" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Hydrogen_in_nature"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Hydrogen in nature</span> </div> </a> <ul id="toc-Hydrogen_in_nature-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-History_of_Hydrogen" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History_of_Hydrogen"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>History of Hydrogen</span> </div> </a> <button aria-controls="toc-History_of_Hydrogen-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>Toggle History of Hydrogen subsection</span> </button> <ul id="toc-History_of_Hydrogen-sublist" class="vector-toc-list"> <li id="toc-Big_Bang_(or_the_creation_of_our_universe)" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Big_Bang_(or_the_creation_of_our_universe)"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Big Bang (or the creation of our universe)</span> </div> </a> <ul id="toc-Big_Bang_(or_the_creation_of_our_universe)-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Uses_of_Hydrogen" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Uses_of_Hydrogen"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Uses of Hydrogen</span> </div> </a> <button aria-controls="toc-Uses_of_Hydrogen-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>Toggle Uses of Hydrogen subsection</span> </button> <ul id="toc-Uses_of_Hydrogen-sublist" class="vector-toc-list"> <li id="toc-Nuclear_fusion" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nuclear_fusion"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.1</span> <span>Nuclear fusion</span> </div> </a> <ul id="toc-Nuclear_fusion-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Using_hydrogen" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Using_hydrogen"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.2</span> <span>Using hydrogen</span> </div> </a> <ul id="toc-Using_hydrogen-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Other_websites" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Other_websites"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Other websites</span> </div> </a> <ul id="toc-Other_websites-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="Contents" 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="Toggle the table of contents" > <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">Toggle the table of contents</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">Hydrogen</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="Go to an article in another language. Available in 218 languages" > <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-218" 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">218 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://af.wikipedia.org/wiki/Waterstof" title="Waterstof – Afrikaans" lang="af" hreflang="af" data-title="Waterstof" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Wasserstoff" title="Wasserstoff – Alemannic" lang="gsw" hreflang="gsw" data-title="Wasserstoff" data-language-autonym="Alemannisch" data-language-local-name="Alemannic" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%88%80%E1%8B%AD%E1%8B%B5%E1%88%AE%E1%8C%85%E1%8A%95" title="ሀይድሮጅን – Amharic" lang="am" hreflang="am" data-title="ሀይድሮጅን" data-language-autonym="አማርኛ" data-language-local-name="Amharic" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-smn mw-list-item"><a href="https://smn.wikipedia.org/wiki/Vety" title="Vety – Inari Sami" lang="smn" hreflang="smn" data-title="Vety" data-language-autonym="Anarâškielâ" data-language-local-name="Inari Sami" class="interlanguage-link-target"><span>Anarâškielâ</span></a></li><li class="interlanguage-link interwiki-anp mw-list-item"><a href="https://anp.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BE%E0%A4%87%E0%A4%A1%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9C%E0%A4%A8" title="हाइड्रोजन – Angika" lang="anp" hreflang="anp" data-title="हाइड्रोजन" data-language-autonym="अंगिका" data-language-local-name="Angika" class="interlanguage-link-target"><span>अंगिका</span></a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/W%C3%A6tertimber" title="Wætertimber – Old English" lang="ang" hreflang="ang" data-title="Wætertimber" data-language-autonym="Ænglisc" data-language-local-name="Old English" class="interlanguage-link-target"><span>Ænglisc</span></a></li><li class="interlanguage-link interwiki-ar badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://ar.wikipedia.org/wiki/%D9%87%D9%8A%D8%AF%D8%B1%D9%88%D8%AC%D9%8A%D9%86" title="هيدروجين – Arabic" lang="ar" hreflang="ar" data-title="هيدروجين" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Hidrocheno" title="Hidrocheno – Aragonese" lang="an" hreflang="an" data-title="Hidrocheno" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-hyw mw-list-item"><a href="https://hyw.wikipedia.org/wiki/%D5%8B%D6%80%D5%A1%D5%AE%D5%AB%D5%B6" title="Ջրածին – Western Armenian" lang="hyw" hreflang="hyw" data-title="Ջրածին" data-language-autonym="Արեւմտահայերէն" data-language-local-name="Western Armenian" class="interlanguage-link-target"><span>Արեւմտահայերէն</span></a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Hidroghenu" title="Hidroghenu – Aromanian" lang="rup" hreflang="rup" data-title="Hidroghenu" data-language-autonym="Armãneashti" data-language-local-name="Aromanian" class="interlanguage-link-target"><span>Armãneashti</span></a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A6%89%E0%A6%A6%E0%A6%9C%E0%A6%BE%E0%A6%A8" title="উদজান – Assamese" lang="as" hreflang="as" data-title="উদজান" data-language-autonym="অসমীয়া" data-language-local-name="Assamese" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Hidr%C3%B3xenu" title="Hidróxenu – Asturian" lang="ast" hreflang="ast" data-title="Hidróxenu" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Tatavev%C3%BDi" title="Tatavevýi – Guarani" lang="gn" hreflang="gn" data-title="Tatavevýi" data-language-autonym="Avañe'ẽ" data-language-local-name="Guarani" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Hidrogen" title="Hidrogen – Azerbaijani" lang="az" hreflang="az" data-title="Hidrogen" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D9%87%DB%8C%D8%AF%D8%B1%D9%88%DA%98%D9%86" title="هیدروژن – South Azerbaijani" lang="azb" hreflang="azb" data-title="هیدروژن" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Hidrog%C3%A9n" title="Hidrogén – Balinese" lang="ban" hreflang="ban" data-title="Hidrogén" data-language-autonym="Basa Bali" data-language-local-name="Balinese" class="interlanguage-link-target"><span>Basa Bali</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B9%E0%A6%BE%E0%A6%87%E0%A6%A1%E0%A7%8D%E0%A6%B0%E0%A7%8B%E0%A6%9C%E0%A7%87%E0%A6%A8" title="হাইড্রোজেন – Bangla" lang="bn" hreflang="bn" data-title="হাইড্রোজেন" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Ch%C3%BAi-s%C3%B2%CD%98" title="Chúi-sò͘ – Minnan" lang="nan" hreflang="nan" data-title="Chúi-sò͘" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B4" title="Водород – Bashkir" lang="ba" hreflang="ba" data-title="Водород" data-language-autonym="Башҡортса" data-language-local-name="Bashkir" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%92%D0%B0%D0%B4%D0%B0%D1%80%D0%BE%D0%B4" title="Вадарод – Belarusian" lang="be" hreflang="be" data-title="Вадарод" data-language-autonym="Беларуская" data-language-local-name="Belarusian" 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%B4%D0%B0%D1%80%D0%BE%D0%B4" title="Вадарод – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Вадарод" 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-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BE%E0%A4%87%E0%A4%A1%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9C%E0%A4%A8" title="हाइड्रोजन – Bhojpuri" lang="bh" hreflang="bh" data-title="हाइड्रोजन" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Idrohino" title="Idrohino – Central Bikol" lang="bcl" hreflang="bcl" data-title="Idrohino" 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-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B4" title="Водород – Bulgarian" lang="bg" hreflang="bg" data-title="Водород" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/Wassastoff" title="Wassastoff – Bavarian" lang="bar" hreflang="bar" data-title="Wassastoff" data-language-autonym="Boarisch" data-language-local-name="Bavarian" class="interlanguage-link-target"><span>Boarisch</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%A1%E0%BD%84%E0%BC%8B%E0%BD%A2%E0%BE%B3%E0%BD%B4%E0%BD%84%E0%BC%8B%E0%BC%8D" title="ཡང་རླུང་། – Tibetan" lang="bo" hreflang="bo" data-title="ཡང་རླུང་།" data-language-autonym="བོད་ཡིག" data-language-local-name="Tibetan" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Vodik" title="Vodik – Bosnian" lang="bs" hreflang="bs" data-title="Vodik" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Hidrogen" title="Hidrogen – Breton" lang="br" hreflang="br" data-title="Hidrogen" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bxr mw-list-item"><a href="https://bxr.wikipedia.org/wiki/%D0%A3%D2%BB%D0%B0%D0%BD%D1%82%D2%AF%D1%80%D1%8D%D0%B3%D1%88%D1%8D" title="Уһантүрэгшэ – Russia Buriat" lang="bxr" hreflang="bxr" data-title="Уһантүрэгшэ" data-language-autonym="Буряад" data-language-local-name="Russia Buriat" class="interlanguage-link-target"><span>Буряад</span></a></li><li class="interlanguage-link interwiki-ca badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://ca.wikipedia.org/wiki/Hidrogen" title="Hidrogen – Catalan" lang="ca" hreflang="ca" data-title="Hidrogen" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%A8%D1%8B%D0%B2%D0%B0%D0%BC%C4%83%D1%88" title="Шывамăш – Chuvash" lang="cv" hreflang="cv" data-title="Шывамăш" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Hidroheno" title="Hidroheno – Cebuano" lang="ceb" hreflang="ceb" data-title="Hidroheno" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Vod%C3%ADk" title="Vodík – Czech" lang="cs" hreflang="cs" data-title="Vodík" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Hydrogen" title="Hydrogen – Shona" lang="sn" hreflang="sn" data-title="Hydrogen" data-language-autonym="ChiShona" data-language-local-name="Shona" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Idrogenu" title="Idrogenu – Corsican" lang="co" hreflang="co" data-title="Idrogenu" data-language-autonym="Corsu" data-language-local-name="Corsican" class="interlanguage-link-target"><span>Corsu</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Hydrogen" title="Hydrogen – Welsh" lang="cy" hreflang="cy" data-title="Hydrogen" 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/Brint" title="Brint – Danish" lang="da" hreflang="da" data-title="Brint" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D9%87%D9%8A%D8%AF%D8%B1%D9%88%D8%AC%D9%8A%D9%86" title="هيدروجين – Moroccan Arabic" lang="ary" hreflang="ary" data-title="هيدروجين" data-language-autonym="الدارجة" data-language-local-name="Moroccan Arabic" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-de badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://de.wikipedia.org/wiki/Wasserstoff" title="Wasserstoff – German" lang="de" hreflang="de" data-title="Wasserstoff" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-dv mw-list-item"><a href="https://dv.wikipedia.org/wiki/%DE%80%DE%A6%DE%87%DE%A8%DE%91%DE%B0%DE%83%DE%A6%DE%96%DE%A6%DE%82%DE%B0" title="ހައިޑްރަޖަން – Divehi" lang="dv" hreflang="dv" data-title="ހައިޑްރަޖަން" data-language-autonym="ދިވެހިބަސް" data-language-local-name="Divehi" class="interlanguage-link-target"><span>ދިވެހިބަސް</span></a></li><li class="interlanguage-link interwiki-nv mw-list-item"><a href="https://nv.wikipedia.org/wiki/H%C3%A1%C3%A1ji%CA%BCjin" title="Háájiʼjin – Navajo" lang="nv" hreflang="nv" data-title="Háájiʼjin" data-language-autonym="Diné bizaad" data-language-local-name="Navajo" class="interlanguage-link-target"><span>Diné bizaad</span></a></li><li class="interlanguage-link interwiki-dsb mw-list-item"><a href="https://dsb.wikipedia.org/wiki/W%C3%B3%C5%BAik" title="Wóźik – Lower Sorbian" lang="dsb" hreflang="dsb" data-title="Wóźik" data-language-autonym="Dolnoserbski" data-language-local-name="Lower Sorbian" class="interlanguage-link-target"><span>Dolnoserbski</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Vesinik" title="Vesinik – Estonian" lang="et" hreflang="et" data-title="Vesinik" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A5%CE%B4%CF%81%CE%BF%CE%B3%CF%8C%CE%BD%CE%BF" title="Υδρογόνο – Greek" lang="el" hreflang="el" data-title="Υδρογόνο" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-eml mw-list-item"><a href="https://eml.wikipedia.org/wiki/Idr%C3%B4gen" title="Idrôgen – Emiliano-Romagnolo" lang="egl" hreflang="egl" data-title="Idrôgen" data-language-autonym="Emiliàn e rumagnòl" data-language-local-name="Emiliano-Romagnolo" class="interlanguage-link-target"><span>Emiliàn e rumagnòl</span></a></li><li class="interlanguage-link interwiki-en badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://en.wikipedia.org/wiki/Hydrogen" title="Hydrogen – English" lang="en" hreflang="en" data-title="Hydrogen" data-language-autonym="English" data-language-local-name="English" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-myv mw-list-item"><a href="https://myv.wikipedia.org/wiki/%D0%92%D0%B5%D0%B4%D1%8C_%D1%87%D0%B0%D1%87%D1%82%D1%8B%D0%B9" title="Ведь чачтый – Erzya" lang="myv" hreflang="myv" data-title="Ведь чачтый" data-language-autonym="Эрзянь" data-language-local-name="Erzya" class="interlanguage-link-target"><span>Эрзянь</span></a></li><li class="interlanguage-link interwiki-es badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://es.wikipedia.org/wiki/Hidr%C3%B3geno" title="Hidrógeno – Spanish" lang="es" hreflang="es" data-title="Hidrógeno" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Hidrogeno" title="Hidrogeno – Esperanto" lang="eo" hreflang="eo" data-title="Hidrogeno" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-ext mw-list-item"><a href="https://ext.wikipedia.org/wiki/Idr%C3%B3genu" title="Idrógenu – Extremaduran" lang="ext" hreflang="ext" data-title="Idrógenu" data-language-autonym="Estremeñu" data-language-local-name="Extremaduran" class="interlanguage-link-target"><span>Estremeñu</span></a></li><li class="interlanguage-link interwiki-eu badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://eu.wikipedia.org/wiki/Hidrogeno" title="Hidrogeno – Basque" lang="eu" hreflang="eu" data-title="Hidrogeno" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://fa.wikipedia.org/wiki/%D9%87%DB%8C%D8%AF%D8%B1%D9%88%DA%98%D9%86" title="هیدروژن – Persian" lang="fa" hreflang="fa" data-title="هیدروژن" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Hydrogen" title="Hydrogen – Fiji Hindi" lang="hif" hreflang="hif" data-title="Hydrogen" data-language-autonym="Fiji Hindi" data-language-local-name="Fiji Hindi" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Hydrogen" title="Hydrogen – Faroese" lang="fo" hreflang="fo" data-title="Hydrogen" data-language-autonym="Føroyskt" data-language-local-name="Faroese" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Hydrog%C3%A8ne" title="Hydrogène – French" lang="fr" hreflang="fr" data-title="Hydrogène" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Wetterstof" title="Wetterstof – Western Frisian" lang="fy" hreflang="fy" data-title="Wetterstof" data-language-autonym="Frysk" data-language-local-name="Western Frisian" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Idrogjen" title="Idrogjen – Friulian" lang="fur" hreflang="fur" data-title="Idrogjen" data-language-autonym="Furlan" data-language-local-name="Friulian" 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/Hidrigin" title="Hidrigin – Irish" lang="ga" hreflang="ga" data-title="Hidrigin" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Hiddragien" title="Hiddragien – Manx" lang="gv" hreflang="gv" data-title="Hiddragien" data-language-autonym="Gaelg" data-language-local-name="Manx" class="interlanguage-link-target"><span>Gaelg</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Haidridean" title="Haidridean – Scottish Gaelic" lang="gd" hreflang="gd" data-title="Haidridean" data-language-autonym="Gàidhlig" data-language-local-name="Scottish Gaelic" 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/Hidr%C3%B3xeno" title="Hidróxeno – Galician" lang="gl" hreflang="gl" data-title="Hidróxeno" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E6%B0%AB" title="氫 – Gan" lang="gan" hreflang="gan" data-title="氫" data-language-autonym="贛語" data-language-local-name="Gan" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-ki mw-list-item"><a href="https://ki.wikipedia.org/wiki/Hydrogen" title="Hydrogen – Kikuyu" lang="ki" hreflang="ki" data-title="Hydrogen" data-language-autonym="Gĩkũyũ" data-language-local-name="Kikuyu" class="interlanguage-link-target"><span>Gĩkũyũ</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%B9%E0%AA%BE%E0%AA%88%E0%AA%A1%E0%AB%8D%E0%AA%B0%E0%AB%8B%E0%AA%9C%E0%AA%A8" title="હાઈડ્રોજન – Gujarati" lang="gu" hreflang="gu" data-title="હાઈડ્રોજન" data-language-autonym="ગુજરાતી" data-language-local-name="Gujarati" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/Khi%C3%A2ng" title="Khiâng – Hakka Chinese" lang="hak" hreflang="hak" data-title="Khiâng" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="Hakka Chinese" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-xal mw-list-item"><a href="https://xal.wikipedia.org/wiki/%D0%93%D0%B8%D0%B4%D1%80%D0%BE%D2%97%D0%B5%D0%BD" title="Гидроҗен – Kalmyk" lang="xal" hreflang="xal" data-title="Гидроҗен" data-language-autonym="Хальмг" data-language-local-name="Kalmyk" class="interlanguage-link-target"><span>Хальмг</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%88%98%EC%86%8C" title="수소 – Korean" lang="ko" hreflang="ko" data-title="수소" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-haw mw-list-item"><a href="https://haw.wikipedia.org/wiki/Eawai" title="Eawai – Hawaiian" lang="haw" hreflang="haw" data-title="Eawai" data-language-autonym="Hawaiʻi" data-language-local-name="Hawaiian" class="interlanguage-link-target"><span>Hawaiʻi</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8B%D6%80%D5%A1%D5%AE%D5%AB%D5%B6" title="Ջրածին – Armenian" lang="hy" hreflang="hy" data-title="Ջրածին" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BE%E0%A4%87%E0%A4%A1%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9C%E0%A4%A8" title="हाइड्रोजन – Hindi" lang="hi" hreflang="hi" data-title="हाइड्रोजन" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hsb mw-list-item"><a href="https://hsb.wikipedia.org/wiki/Wod%C5%BAik" title="Wodźik – Upper Sorbian" lang="hsb" hreflang="hsb" data-title="Wodźik" data-language-autonym="Hornjoserbsce" data-language-local-name="Upper Sorbian" class="interlanguage-link-target"><span>Hornjoserbsce</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Vodik" title="Vodik – Croatian" lang="hr" hreflang="hr" data-title="Vodik" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Hidro" title="Hidro – Ido" lang="io" hreflang="io" data-title="Hidro" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-ilo mw-list-item"><a href="https://ilo.wikipedia.org/wiki/Hidroheno" title="Hidroheno – Iloko" lang="ilo" hreflang="ilo" data-title="Hidroheno" data-language-autonym="Ilokano" data-language-local-name="Iloko" class="interlanguage-link-target"><span>Ilokano</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Hidrogen" title="Hidrogen – Indonesian" lang="id" hreflang="id" data-title="Hidrogen" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Hydrogeno" title="Hydrogeno – Interlingua" lang="ia" hreflang="ia" data-title="Hydrogeno" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-ie mw-list-item"><a href="https://ie.wikipedia.org/wiki/Hidrogen" title="Hidrogen – Interlingue" lang="ie" hreflang="ie" data-title="Hidrogen" data-language-autonym="Interlingue" data-language-local-name="Interlingue" class="interlanguage-link-target"><span>Interlingue</span></a></li><li class="interlanguage-link interwiki-os mw-list-item"><a href="https://os.wikipedia.org/wiki/%D0%94%D0%BE%D0%BD%D0%B3%D1%83%D1%8B%D1%80" title="Донгуыр – Ossetic" lang="os" hreflang="os" data-title="Донгуыр" data-language-autonym="Ирон" data-language-local-name="Ossetic" class="interlanguage-link-target"><span>Ирон</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/IHwanzi" title="IHwanzi – Zulu" lang="zu" hreflang="zu" data-title="IHwanzi" data-language-autonym="IsiZulu" data-language-local-name="Zulu" class="interlanguage-link-target"><span>IsiZulu</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Vetni" title="Vetni – Icelandic" lang="is" hreflang="is" data-title="Vetni" data-language-autonym="Íslenska" data-language-local-name="Icelandic" 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/Idrogeno" title="Idrogeno – Italian" lang="it" hreflang="it" data-title="Idrogeno" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%99%D7%9E%D7%9F" title="מימן – Hebrew" lang="he" hreflang="he" data-title="מימן" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Hidrogen" title="Hidrogen – Javanese" lang="jv" hreflang="jv" data-title="Hidrogen" data-language-autonym="Jawa" data-language-local-name="Javanese" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/H%C9%A9dr%C9%94z%C9%9Bn%C9%A9" title="Hɩdrɔzɛnɩ – Kabiye" lang="kbp" hreflang="kbp" data-title="Hɩdrɔzɛnɩ" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%9C%E0%B2%B2%E0%B2%9C%E0%B2%A8%E0%B2%95" title="ಜಲಜನಕ – Kannada" lang="kn" hreflang="kn" data-title="ಜಲಜನಕ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%AC%E1%83%A7%E1%83%90%E1%83%9A%E1%83%91%E1%83%90%E1%83%93%E1%83%98" title="წყალბადი – Georgian" lang="ka" hreflang="ka" data-title="წყალბადი" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/%DB%81%D8%A7%DB%8C%DA%88%D8%B1%D9%88%D8%AC%D9%8E%D9%86" title="ہایڈروجَن – Kashmiri" lang="ks" hreflang="ks" data-title="ہایڈروجَن" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="Kashmiri" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A1%D1%83%D1%82%D0%B5%D0%B3%D1%96" title="Сутегі – Kazakh" lang="kk" hreflang="kk" data-title="Сутегі" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Hidrojen" title="Hidrojen – Cornish" lang="kw" hreflang="kw" data-title="Hidrojen" data-language-autonym="Kernowek" data-language-local-name="Cornish" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Hidrojeni" title="Hidrojeni – Swahili" lang="sw" hreflang="sw" data-title="Hidrojeni" data-language-autonym="Kiswahili" data-language-local-name="Swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-kv mw-list-item"><a href="https://kv.wikipedia.org/wiki/%D0%92%D0%B0%D1%87%D1%83%D0%B6%D1%8B%D1%81%D1%8C" title="Вачужысь – Komi" lang="kv" hreflang="kv" data-title="Вачужысь" data-language-autonym="Коми" data-language-local-name="Komi" class="interlanguage-link-target"><span>Коми</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Idwoj%C3%A8n" title="Idwojèn – Haitian Creole" lang="ht" hreflang="ht" data-title="Idwojèn" data-language-autonym="Kreyòl ayisyen" data-language-local-name="Haitian Creole" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-gcr mw-list-item"><a href="https://gcr.wikipedia.org/wiki/Idroj%C3%A8n" title="Idrojèn – Guianan Creole" lang="gcr" hreflang="gcr" data-title="Idrojèn" data-language-autonym="Kriyòl gwiyannen" data-language-local-name="Guianan Creole" class="interlanguage-link-target"><span>Kriyòl gwiyannen</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/H%C3%AEdrojen" title="Hîdrojen – Kurdish" lang="ku" hreflang="ku" data-title="Hîdrojen" data-language-autonym="Kurdî" data-language-local-name="Kurdish" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%A1%D1%83%D1%83%D1%82%D0%B5%D0%BA" title="Суутек – Kyrgyz" lang="ky" hreflang="ky" data-title="Суутек" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-mrj mw-list-item"><a href="https://mrj.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B4" title="Водород – Western Mari" lang="mrj" hreflang="mrj" data-title="Водород" data-language-autonym="Кырык мары" data-language-local-name="Western Mari" class="interlanguage-link-target"><span>Кырык мары</span></a></li><li class="interlanguage-link interwiki-lld mw-list-item"><a href="https://lld.wikipedia.org/wiki/Idrogen" title="Idrogen – Ladin" lang="lld" hreflang="lld" data-title="Idrogen" data-language-autonym="Ladin" data-language-local-name="Ladin" class="interlanguage-link-target"><span>Ladin</span></a></li><li class="interlanguage-link interwiki-lo mw-list-item"><a href="https://lo.wikipedia.org/wiki/%E0%BB%84%E0%BA%AE%E0%BB%82%E0%BA%94%E0%BA%A3%E0%BB%80%E0%BA%88%E0%BA%99" title="ໄຮໂດຣເຈນ – Lao" lang="lo" hreflang="lo" data-title="ໄຮໂດຣເຈນ" data-language-autonym="ລາວ" data-language-local-name="Lao" class="interlanguage-link-target"><span>ລາວ</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Hydrogenium" title="Hydrogenium – Latin" lang="la" hreflang="la" data-title="Hydrogenium" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/%C5%AAde%C5%86radis" title="Ūdeņradis – Latvian" lang="lv" hreflang="lv" data-title="Ūdeņradis" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Waasserstoff" title="Waasserstoff – Luxembourgish" lang="lb" hreflang="lb" data-title="Waasserstoff" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxembourgish" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lez mw-list-item"><a href="https://lez.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B4" title="Водород – Lezghian" lang="lez" hreflang="lez" data-title="Водород" data-language-autonym="Лезги" data-language-local-name="Lezghian" class="interlanguage-link-target"><span>Лезги</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Vandenilis" title="Vandenilis – Lithuanian" lang="lt" hreflang="lt" data-title="Vandenilis" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Idrogeno" title="Idrogeno – Ligurian" lang="lij" hreflang="lij" data-title="Idrogeno" data-language-autonym="Ligure" data-language-local-name="Ligurian" class="interlanguage-link-target"><span>Ligure</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Waterstof" title="Waterstof – Limburgish" lang="li" hreflang="li" data-title="Waterstof" data-language-autonym="Limburgs" data-language-local-name="Limburgish" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/Idroj%C9%9B%CC%81n%C3%AD" title="Idrojɛ́ní – Lingala" lang="ln" hreflang="ln" data-title="Idrojɛ́ní" data-language-autonym="Lingála" data-language-local-name="Lingala" class="interlanguage-link-target"><span>Lingála</span></a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Idrojen" title="Idrojen – Lingua Franca Nova" lang="lfn" hreflang="lfn" data-title="Idrojen" data-language-autonym="Lingua Franca Nova" data-language-local-name="Lingua Franca Nova" class="interlanguage-link-target"><span>Lingua Franca Nova</span></a></li><li class="interlanguage-link interwiki-olo mw-list-item"><a href="https://olo.wikipedia.org/wiki/Vezisuadu" title="Vezisuadu – Livvi-Karelian" lang="olo" hreflang="olo" data-title="Vezisuadu" data-language-autonym="Livvinkarjala" data-language-local-name="Livvi-Karelian" class="interlanguage-link-target"><span>Livvinkarjala</span></a></li><li class="interlanguage-link interwiki-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/cidro" title="cidro – Lojban" lang="jbo" hreflang="jbo" data-title="cidro" 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-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Idrogen" title="Idrogen – Lombard" lang="lmo" hreflang="lmo" data-title="Idrogen" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-hu badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://hu.wikipedia.org/wiki/Hidrog%C3%A9n" title="Hidrogén – Hungarian" lang="hu" hreflang="hu" data-title="Hidrogén" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B4" title="Водород – Macedonian" lang="mk" hreflang="mk" data-title="Водород" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Hidir%C3%B4zenina" title="Hidirôzenina – Malagasy" lang="mg" hreflang="mg" data-title="Hidirôzenina" data-language-autonym="Malagasy" data-language-local-name="Malagasy" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B9%E0%B5%88%E0%B4%A1%E0%B5%8D%E0%B4%B0%E0%B4%9C%E0%B5%BB" title="ഹൈഡ്രജൻ – Malayalam" lang="ml" hreflang="ml" data-title="ഹൈഡ്രജൻ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mt mw-list-item"><a href="https://mt.wikipedia.org/wiki/Idro%C4%A1enu" title="Idroġenu – Maltese" lang="mt" hreflang="mt" data-title="Idroġenu" data-language-autonym="Malti" data-language-local-name="Maltese" class="interlanguage-link-target"><span>Malti</span></a></li><li class="interlanguage-link interwiki-mi mw-list-item"><a href="https://mi.wikipedia.org/wiki/Hauwai_(p%C5%ABmotu)" title="Hauwai (pūmotu) – Māori" lang="mi" hreflang="mi" data-title="Hauwai (pūmotu)" data-language-autonym="Māori" data-language-local-name="Māori" class="interlanguage-link-target"><span>Māori</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BE%E0%A4%AF%E0%A4%A1%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9C%E0%A4%A8" title="हायड्रोजन – Marathi" lang="mr" hreflang="mr" data-title="हायड्रोजन" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%AC%E1%83%A7%E1%83%90%E1%83%A0%E1%83%91%E1%83%90%E1%83%93%E1%83%98" title="წყარბადი – Mingrelian" lang="xmf" hreflang="xmf" data-title="წყარბადი" data-language-autonym="მარგალური" data-language-local-name="Mingrelian" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D9%87%D8%A7%D9%8A%D8%AF%D8%B1%D9%88%D8%AC%D9%8A%D9%86" title="هايدروجين – Egyptian Arabic" lang="arz" hreflang="arz" data-title="هايدروجين" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Hidrogen" title="Hidrogen – Malay" lang="ms" hreflang="ms" data-title="Hidrogen" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-mni mw-list-item"><a href="https://mni.wikipedia.org/wiki/%EA%AF%8D%EA%AF%A5%EA%AF%8F%EA%AF%97%EA%AF%AD%EA%AF%94%EA%AF%A3%EA%AF%96%EA%AF%A6%EA%AF%9F" title="ꯍꯥꯏꯗ꯭ꯔꯣꯖꯦꯟ – Manipuri" lang="mni" hreflang="mni" data-title="ꯍꯥꯏꯗ꯭ꯔꯣꯖꯦꯟ" data-language-autonym="ꯃꯤꯇꯩ ꯂꯣꯟ" data-language-local-name="Manipuri" class="interlanguage-link-target"><span>ꯃꯤꯇꯩ ꯂꯣꯟ</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/K%C4%ADng" title="Kĭng – Mindong" lang="cdo" hreflang="cdo" data-title="Kĭng" 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-mwl mw-list-item"><a href="https://mwl.wikipedia.org/wiki/Heidrog%C3%A9nio" title="Heidrogénio – Mirandese" lang="mwl" hreflang="mwl" data-title="Heidrogénio" data-language-autonym="Mirandés" data-language-local-name="Mirandese" class="interlanguage-link-target"><span>Mirandés</span></a></li><li class="interlanguage-link interwiki-mdf mw-list-item"><a href="https://mdf.wikipedia.org/wiki/%D0%92%D0%B5%D0%B4%D1%8C%D1%88%D0%B0%D1%87%D1%84%D1%82%D1%8B" title="Ведьшачфты – Moksha" lang="mdf" hreflang="mdf" data-title="Ведьшачфты" data-language-autonym="Мокшень" data-language-local-name="Moksha" class="interlanguage-link-target"><span>Мокшень</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A3%D1%81%D1%82%D3%A9%D1%80%D3%A9%D0%B3%D1%87" title="Устөрөгч – Mongolian" lang="mn" hreflang="mn" data-title="Устөрөгч" data-language-autonym="Монгол" data-language-local-name="Mongolian" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%9F%E1%80%AD%E1%80%AF%E1%80%80%E1%80%BA%E1%80%92%E1%80%9B%E1%80%AD%E1%80%AF%E1%80%82%E1%80%BB%E1%80%84%E1%80%BA" title="ဟိုက်ဒရိုဂျင် – Burmese" lang="my" hreflang="my" data-title="ဟိုက်ဒရိုဂျင်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nah mw-list-item"><a href="https://nah.wikipedia.org/wiki/Ayocoxqui" title="Ayocoxqui – Nahuatl" lang="nah" hreflang="nah" data-title="Ayocoxqui" data-language-autonym="Nāhuatl" data-language-local-name="Nahuatl" class="interlanguage-link-target"><span>Nāhuatl</span></a></li><li class="interlanguage-link interwiki-fj mw-list-item"><a href="https://fj.wikipedia.org/wiki/Hydrogen" title="Hydrogen – Fijian" lang="fj" hreflang="fj" data-title="Hydrogen" data-language-autonym="Na Vosa Vakaviti" data-language-local-name="Fijian" class="interlanguage-link-target"><span>Na Vosa Vakaviti</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Waterstof_(element)" title="Waterstof (element) – Dutch" lang="nl" hreflang="nl" data-title="Waterstof (element)" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nds-nl mw-list-item"><a href="https://nds-nl.wikipedia.org/wiki/Waeterstof" title="Waeterstof – Low Saxon" lang="nds-NL" hreflang="nds-NL" data-title="Waeterstof" data-language-autonym="Nedersaksies" data-language-local-name="Low Saxon" class="interlanguage-link-target"><span>Nedersaksies</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BE%E0%A4%87%E0%A4%A1%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9C%E0%A4%A8" title="हाइड्रोजन – Nepali" lang="ne" hreflang="ne" data-title="हाइड्रोजन" data-language-autonym="नेपाली" data-language-local-name="Nepali" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BE%E0%A4%87%E0%A4%A6%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9C%E0%A4%A8" title="हाइद्रोजन – Newari" lang="new" hreflang="new" data-title="हाइद्रोजन" 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-ja badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://ja.wikipedia.org/wiki/%E6%B0%B4%E7%B4%A0" title="水素 – Japanese" lang="ja" hreflang="ja" data-title="水素" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%A5%D0%B8%D0%BB%D1%83%D1%80%D0%B3" title="Хилург – Chechen" lang="ce" hreflang="ce" data-title="Хилург" data-language-autonym="Нохчийн" data-language-local-name="Chechen" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Weederstoof" title="Weederstoof – Northern Frisian" lang="frr" hreflang="frr" data-title="Weederstoof" data-language-autonym="Nordfriisk" data-language-local-name="Northern Frisian" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-pih mw-list-item"><a href="https://pih.wikipedia.org/wiki/Hiidrojen" title="Hiidrojen – Norfuk / Pitkern" lang="pih" hreflang="pih" data-title="Hiidrojen" data-language-autonym="Norfuk / Pitkern" data-language-local-name="Norfuk / Pitkern" class="interlanguage-link-target"><span>Norfuk / Pitkern</span></a></li><li class="interlanguage-link interwiki-no badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://no.wikipedia.org/wiki/Hydrogen" title="Hydrogen – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Hydrogen" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Hydrogen" title="Hydrogen – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Hydrogen" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-nov mw-list-item"><a href="https://nov.wikipedia.org/wiki/Hidrogene" title="Hidrogene – Novial" lang="nov" hreflang="nov" data-title="Hidrogene" data-language-autonym="Novial" data-language-local-name="Novial" class="interlanguage-link-target"><span>Novial</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Idrog%C3%A8n" title="Idrogèn – Occitan" lang="oc" hreflang="oc" data-title="Idrogèn" data-language-autonym="Occitan" data-language-local-name="Occitan" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-mhr mw-list-item"><a href="https://mhr.wikipedia.org/wiki/%D0%92%D3%B1%D0%B4%D0%B5%D0%B6" title="Вӱдеж – Eastern Mari" lang="mhr" hreflang="mhr" data-title="Вӱдеж" data-language-autonym="Олык марий" data-language-local-name="Eastern Mari" class="interlanguage-link-target"><span>Олык марий</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%89%E0%AC%A6%E0%AD%8D%E2%80%8C%E0%AC%9C%E0%AC%BE%E0%AC%A8" title="ଉଦ୍‌ଜାନ – Odia" lang="or" hreflang="or" data-title="ଉଦ୍‌ଜାନ" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="Odia" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Haayidroojiinii" title="Haayidroojiinii – Oromo" lang="om" hreflang="om" data-title="Haayidroojiinii" data-language-autonym="Oromoo" data-language-local-name="Oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Vodorod" title="Vodorod – Uzbek" lang="uz" hreflang="uz" data-title="Vodorod" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%B9%E0%A8%BE%E0%A8%88%E0%A8%A1%E0%A8%B0%E0%A9%8B%E0%A8%9C%E0%A8%A8" title="ਹਾਈਡਰੋਜਨ – Punjabi" lang="pa" hreflang="pa" data-title="ਹਾਈਡਰੋਜਨ" 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%B9%E0%A4%BE%E0%A4%87%E0%A4%A1%E0%A5%8D%E0%A4%B0%E0%A5%8B%E0%A4%9C%E0%A4%A8" title="हाइड्रोजन – Pali" lang="pi" hreflang="pi" data-title="हाइड्रोजन" data-language-autonym="पालि" data-language-local-name="Pali" class="interlanguage-link-target"><span>पालि</span></a></li><li class="interlanguage-link interwiki-pfl mw-list-item"><a href="https://pfl.wikipedia.org/wiki/Wasserstoff" title="Wasserstoff – Palatine German" lang="pfl" hreflang="pfl" data-title="Wasserstoff" data-language-autonym="Pälzisch" data-language-local-name="Palatine German" class="interlanguage-link-target"><span>Pälzisch</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%DB%81%D8%A7%D8%A6%DB%8C%DA%88%D8%B1%D9%88%D8%AC%D9%86" title="ہائیڈروجن – Western Punjabi" lang="pnb" hreflang="pnb" data-title="ہائیڈروجن" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-blk mw-list-item"><a href="https://blk.wikipedia.org/wiki/%E1%80%9F%E1%80%AF%E1%80%B2%E1%80%80%E1%80%BA%E1%80%92%E1%80%9B%E1%80%AD%E1%80%AF%E1%80%85%E1%80%B2%E1%80%94%E1%80%BA" title="ဟုဲက်ဒရိုစဲန် – Pa'O" lang="blk" hreflang="blk" data-title="ဟုဲက်ဒရိုစဲန်" data-language-autonym="ပအိုဝ်ႏဘာႏသာႏ" data-language-local-name="Pa'O" class="interlanguage-link-target"><span>ပအိုဝ်ႏဘာႏသာႏ</span></a></li><li class="interlanguage-link interwiki-pap mw-list-item"><a href="https://pap.wikipedia.org/wiki/Hidr%C3%B3geno" title="Hidrógeno – Papiamento" lang="pap" hreflang="pap" data-title="Hidrógeno" data-language-autonym="Papiamentu" data-language-local-name="Papiamento" class="interlanguage-link-target"><span>Papiamentu</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D9%87%D8%A7%D9%8A%DA%89%D8%B1%D9%88%D8%AC%D9%86" title="هايډروجن – Pashto" lang="ps" hreflang="ps" data-title="هايډروجن" data-language-autonym="پښتو" data-language-local-name="Pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-jam mw-list-item"><a href="https://jam.wikipedia.org/wiki/Aijrojin" title="Aijrojin – Jamaican Creole English" lang="jam" hreflang="jam" data-title="Aijrojin" data-language-autonym="Patois" data-language-local-name="Jamaican Creole English" class="interlanguage-link-target"><span>Patois</span></a></li><li class="interlanguage-link interwiki-koi mw-list-item"><a href="https://koi.wikipedia.org/wiki/%D0%92%D0%B0%D1%83%D0%B2%D1%82%D1%8B%D1%80" title="Ваувтыр – Komi-Permyak" lang="koi" hreflang="koi" data-title="Ваувтыр" data-language-autonym="Перем коми" data-language-local-name="Komi-Permyak" class="interlanguage-link-target"><span>Перем коми</span></a></li><li class="interlanguage-link interwiki-km mw-list-item"><a href="https://km.wikipedia.org/wiki/%E1%9E%A2%E1%9F%8A%E1%9E%B8%E1%9E%8A%E1%9F%92%E1%9E%9A%E1%9E%BC%E1%9E%9F%E1%9F%82%E1%9E%93" title="អ៊ីដ្រូសែន – Khmer" lang="km" hreflang="km" data-title="អ៊ីដ្រូសែន" data-language-autonym="ភាសាខ្មែរ" data-language-local-name="Khmer" class="interlanguage-link-target"><span>ភាសាខ្មែរ</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Idr%C3%B2gen" title="Idrògen – Piedmontese" lang="pms" hreflang="pms" data-title="Idrògen" data-language-autonym="Piemontèis" data-language-local-name="Piedmontese" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Waterstoff" title="Waterstoff – Low German" lang="nds" hreflang="nds" data-title="Waterstoff" data-language-autonym="Plattdüütsch" data-language-local-name="Low German" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Wod%C3%B3r" title="Wodór – Polish" lang="pl" hreflang="pl" data-title="Wodór" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnt mw-list-item"><a href="https://pnt.wikipedia.org/wiki/%CE%A5%CE%B4%CF%81%CE%BF%CE%B3%CF%8C%CE%BD%CE%BF%CE%BD" title="Υδρογόνον – Pontic" lang="pnt" hreflang="pnt" data-title="Υδρογόνον" data-language-autonym="Ποντιακά" data-language-local-name="Pontic" class="interlanguage-link-target"><span>Ποντιακά</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Hidrog%C3%A9nio" title="Hidrogénio – Portuguese" lang="pt" hreflang="pt" data-title="Hidrogénio" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-kaa mw-list-item"><a href="https://kaa.wikipedia.org/wiki/Vodorod" title="Vodorod – Kara-Kalpak" lang="kaa" hreflang="kaa" data-title="Vodorod" data-language-autonym="Qaraqalpaqsha" data-language-local-name="Kara-Kalpak" class="interlanguage-link-target"><span>Qaraqalpaqsha</span></a></li><li class="interlanguage-link interwiki-crh mw-list-item"><a href="https://crh.wikipedia.org/wiki/Gidrogen" title="Gidrogen – Crimean Tatar" lang="crh" hreflang="crh" data-title="Gidrogen" data-language-autonym="Qırımtatarca" data-language-local-name="Crimean Tatar" class="interlanguage-link-target"><span>Qırımtatarca</span></a></li><li class="interlanguage-link interwiki-ksh mw-list-item"><a href="https://ksh.wikipedia.org/wiki/Wasserstoff" title="Wasserstoff – Colognian" lang="ksh" hreflang="ksh" data-title="Wasserstoff" data-language-autonym="Ripoarisch" data-language-local-name="Colognian" class="interlanguage-link-target"><span>Ripoarisch</span></a></li><li class="interlanguage-link interwiki-ro badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://ro.wikipedia.org/wiki/Hidrogen" title="Hidrogen – Romanian" lang="ro" hreflang="ro" data-title="Hidrogen" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Yakuchaq" title="Yakuchaq – Quechua" lang="qu" hreflang="qu" data-title="Yakuchaq" 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-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%93%D1%96%D0%B4%D1%80%D0%BE%D2%91%D0%B5%D0%BD" title="Гідроґен – Rusyn" lang="rue" hreflang="rue" data-title="Гідроґен" data-language-autonym="Русиньскый" data-language-local-name="Rusyn" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B4" title="Водород – Russian" lang="ru" hreflang="ru" data-title="Водород" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A3%D1%83%D0%BB%D1%83%D0%BA" title="Уулук – Yakut" lang="sah" hreflang="sah" data-title="Уулук" data-language-autonym="Саха тыла" data-language-local-name="Yakut" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-sa mw-list-item"><a href="https://sa.wikipedia.org/wiki/%E0%A4%89%E0%A4%A6%E0%A4%9C%E0%A4%A8" title="उदजन – Sanskrit" lang="sa" hreflang="sa" data-title="उदजन" data-language-autonym="संस्कृतम्" data-language-local-name="Sanskrit" 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%A6%E1%B1%9F%E1%B1%AD%E1%B1%B0%E1%B1%A8%E1%B1%B3%E1%B1%A1%E1%B1%9F%E1%B1%B1" title="ᱦᱟᱭᱰᱨᱳᱡᱟᱱ – Santali" lang="sat" hreflang="sat" data-title="ᱦᱟᱭᱰᱨᱳᱡᱟᱱ" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="Santali" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-skr mw-list-item"><a href="https://skr.wikipedia.org/wiki/%DB%81%D8%A7%D8%A6%DB%8C%DA%88%D8%B1%D9%88%D8%AC%D9%86" title="ہائیڈروجن – Saraiki" lang="skr" hreflang="skr" data-title="ہائیڈروجن" data-language-autonym="سرائیکی" data-language-local-name="Saraiki" class="interlanguage-link-target"><span>سرائیکی</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Idrogenu" title="Idrogenu – Sardinian" lang="sc" hreflang="sc" data-title="Idrogenu" data-language-autonym="Sardu" data-language-local-name="Sardinian" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Hydrogen" title="Hydrogen – Scots" lang="sco" hreflang="sco" data-title="Hydrogen" data-language-autonym="Scots" data-language-local-name="Scots" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Woaterstof" title="Woaterstof – Saterland Frisian" lang="stq" hreflang="stq" data-title="Woaterstof" data-language-autonym="Seeltersk" data-language-local-name="Saterland Frisian" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Hidrogjeni" title="Hidrogjeni – Albanian" lang="sq" hreflang="sq" data-title="Hidrogjeni" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Idr%C3%B2gginu" title="Idrògginu – Sicilian" lang="scn" hreflang="scn" data-title="Idrògginu" data-language-autonym="Sicilianu" data-language-local-name="Sicilian" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%84%E0%B6%BA%E0%B7%92%E0%B6%A9%E0%B7%8A%E2%80%8D%E0%B6%BB%E0%B6%A2%E0%B6%B1%E0%B7%8A" title="හයිඩ්‍රජන් – Sinhala" lang="si" hreflang="si" data-title="හයිඩ්‍රජන්" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%DA%BE%D8%A7%D8%A6%DA%8A%D8%B1%D9%88%D8%AC%D9%86" title="ھائڊروجن – Sindhi" lang="sd" hreflang="sd" data-title="ھائڊروجن" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Vod%C3%ADk" title="Vodík – Slovak" lang="sk" hreflang="sk" data-title="Vodík" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://sl.wikipedia.org/wiki/Vodik" title="Vodik – Slovenian" lang="sl" hreflang="sl" data-title="Vodik" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-cu mw-list-item"><a href="https://cu.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B4%D1%8A" title="Водородъ – Church Slavic" lang="cu" hreflang="cu" data-title="Водородъ" data-language-autonym="Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ" data-language-local-name="Church Slavic" class="interlanguage-link-target"><span>Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ</span></a></li><li class="interlanguage-link interwiki-szl mw-list-item"><a href="https://szl.wikipedia.org/wiki/Wod%C5%8Dr" title="Wodōr – Silesian" lang="szl" hreflang="szl" data-title="Wodōr" data-language-autonym="Ślůnski" data-language-local-name="Silesian" class="interlanguage-link-target"><span>Ślůnski</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Haaydarojiin" title="Haaydarojiin – Somali" lang="so" hreflang="so" data-title="Haaydarojiin" data-language-autonym="Soomaaliga" data-language-local-name="Somali" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%BE%D8%A7%DB%8C%D8%AF%D8%B1%DB%86%D8%AC%DB%8C%D9%86" title="ھایدرۆجین – Central Kurdish" lang="ckb" hreflang="ckb" data-title="ھایدرۆجین" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D0%BD%D0%B8%D0%BA" title="Водоник – Serbian" lang="sr" hreflang="sr" data-title="Водоник" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Vodik" title="Vodik – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Vodik" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Hidrog%C3%A9n" title="Hidrogén – Sundanese" lang="su" hreflang="su" data-title="Hidrogén" data-language-autonym="Sunda" data-language-local-name="Sundanese" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Vety" title="Vety – Finnish" lang="fi" hreflang="fi" data-title="Vety" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv badge-Q17559452 badge-recommendedarticle mw-list-item" title="recommended article"><a href="https://sv.wikipedia.org/wiki/V%C3%A4te" title="Väte – Swedish" lang="sv" hreflang="sv" data-title="Väte" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Idrohino" title="Idrohino – Tagalog" lang="tl" hreflang="tl" data-title="Idrohino" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%90%E0%AE%A4%E0%AE%B0%E0%AE%9A%E0%AE%A9%E0%AF%8D" title="ஐதரசன் – Tamil" lang="ta" hreflang="ta" data-title="ஐதரசன்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-shi mw-list-item"><a href="https://shi.wikipedia.org/wiki/Ahidrujin" title="Ahidrujin – Tachelhit" lang="shi" hreflang="shi" data-title="Ahidrujin" data-language-autonym="Taclḥit" data-language-local-name="Tachelhit" class="interlanguage-link-target"><span>Taclḥit</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Hid%E1%B9%9Bujin" title="Hidṛujin – Kabyle" lang="kab" hreflang="kab" data-title="Hidṛujin" data-language-autonym="Taqbaylit" data-language-local-name="Kabyle" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B4" title="Водород – Tatar" lang="tt" hreflang="tt" data-title="Водород" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%B9%E0%B1%88%E0%B0%A1%E0%B1%8D%E0%B0%B0%E0%B1%8B%E0%B0%9C%E0%B0%A8%E0%B1%8D" title="హైడ్రోజన్ – Telugu" lang="te" hreflang="te" data-title="హైడ్రోజన్" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%84%E0%B8%AE%E0%B9%82%E0%B8%94%E0%B8%A3%E0%B9%80%E0%B8%88%E0%B8%99" title="ไฮโดรเจน – Thai" lang="th" hreflang="th" data-title="ไฮโดรเจน" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D2%B2%D0%B8%D0%B4%D1%80%D0%BE%D0%B3%D0%B5%D0%BD" title="Ҳидроген – Tajik" lang="tg" hreflang="tg" data-title="Ҳидроген" data-language-autonym="Тоҷикӣ" data-language-local-name="Tajik" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Hidrojen" title="Hidrojen – Turkish" lang="tr" hreflang="tr" data-title="Hidrojen" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tyv mw-list-item"><a href="https://tyv.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B4" title="Водород – Tuvinian" lang="tyv" hreflang="tyv" data-title="Водород" data-language-autonym="Тыва дыл" data-language-local-name="Tuvinian" class="interlanguage-link-target"><span>Тыва дыл</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%92%D0%BE%D0%B4%D0%B5%D0%BD%D1%8C" title="Водень – Ukrainian" lang="uk" hreflang="uk" data-title="Водень" data-language-autonym="Українська" data-language-local-name="Ukrainian" 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/%DB%81%D8%A7%D8%A6%DB%8C%DA%88%D8%B1%D9%88%D8%AC%D9%86" title="ہائیڈروجن – Urdu" lang="ur" hreflang="ur" data-title="ہائیڈروجن" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-ug mw-list-item"><a href="https://ug.wikipedia.org/wiki/%DA%BE%D9%89%D8%AF%D8%B1%D9%88%DA%AF%DB%90%D9%86" title="ھىدروگېن – Uyghur" lang="ug" hreflang="ug" data-title="ھىدروگېن" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="Uyghur" class="interlanguage-link-target"><span>ئۇيغۇرچە / Uyghurche</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Idr%C3%B2geno" title="Idrògeno – Venetian" lang="vec" hreflang="vec" data-title="Idrògeno" data-language-autonym="Vèneto" data-language-local-name="Venetian" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Vezinik" title="Vezinik – Veps" lang="vep" hreflang="vep" data-title="Vezinik" data-language-autonym="Vepsän kel’" data-language-local-name="Veps" 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/Hydro" title="Hydro – Vietnamese" lang="vi" hreflang="vi" data-title="Hydro" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vo mw-list-item"><a href="https://vo.wikipedia.org/wiki/Hidrin" title="Hidrin – Volapük" lang="vo" hreflang="vo" data-title="Hidrin" data-language-autonym="Volapük" data-language-local-name="Volapük" class="interlanguage-link-target"><span>Volapük</span></a></li><li class="interlanguage-link interwiki-wa mw-list-item"><a href="https://wa.wikipedia.org/wiki/Idrodjinne" title="Idrodjinne – Walloon" lang="wa" hreflang="wa" data-title="Idrodjinne" data-language-autonym="Walon" data-language-local-name="Walloon" class="interlanguage-link-target"><span>Walon</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E6%B0%AB" title="氫 – Literary Chinese" lang="lzh" hreflang="lzh" data-title="氫" data-language-autonym="文言" data-language-local-name="Literary Chinese" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Woaterstof" title="Woaterstof – West Flemish" lang="vls" hreflang="vls" data-title="Woaterstof" data-language-autonym="West-Vlams" data-language-local-name="West Flemish" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Hidroheno" title="Hidroheno – Waray" lang="war" hreflang="war" data-title="Hidroheno" 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/%E6%B0%A2" title="氢 – Wu" lang="wuu" hreflang="wuu" data-title="氢" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%94%D7%99%D7%93%D7%A8%D7%90%D7%92%D7%A2%D7%9F" title="הידראגען – Yiddish" lang="yi" hreflang="yi" data-title="הידראגען" data-language-autonym="ייִדיש" data-language-local-name="Yiddish" 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/Hydrogen" title="Hydrogen – Yoruba" lang="yo" hreflang="yo" data-title="Hydrogen" data-language-autonym="Yorùbá" data-language-local-name="Yoruba" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E6%B0%AB" title="氫 – Cantonese" lang="yue" hreflang="yue" data-title="氫" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/Hidrocen" title="Hidrocen – Zazaki" lang="diq" hreflang="diq" data-title="Hidrocen" data-language-autonym="Zazaki" data-language-local-name="Zazaki" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Ond%C4%97nilis" title="Ondėnilis – Samogitian" lang="sgs" hreflang="sgs" data-title="Ondėnilis" data-language-autonym="Žemaitėška" data-language-local-name="Samogitian" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%B0%A2" title="氢 – Chinese" lang="zh" hreflang="zh" data-title="氢" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-kge mw-list-item"><a href="https://kge.wikipedia.org/wiki/Hidrogen" title="Hidrogen – Komering" lang="kge" hreflang="kge" data-title="Hidrogen" data-language-autonym="Kumoring" data-language-local-name="Komering" class="interlanguage-link-target"><span>Kumoring</span></a></li><li class="interlanguage-link interwiki-zgh mw-list-item"><a href="https://zgh.wikipedia.org/wiki/%E2%B4%B0%E2%B5%80%E2%B5%89%E2%B4%B7%E2%B5%94%E2%B5%93%E2%B5%8A%E2%B5%89%E2%B5%8F" title="ⴰⵀⵉⴷⵔⵓⵊⵉⵏ – Standard Moroccan Tamazight" lang="zgh" hreflang="zgh" data-title="ⴰⵀⵉⴷⵔⵓⵊⵉⵏ" data-language-autonym="ⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ" data-language-local-name="Standard Moroccan Tamazight" class="interlanguage-link-target"><span>ⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a 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.mw-parser-output .infobox caption{display:table-caption}</style><table class="infobox"><caption class="infobox-title"><span class="nowrap">Hydrogen, <sub>1</sub>H</span></caption><tbody><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Hydrogen_discharge_tube.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Hydrogen_discharge_tube.jpg/220px-Hydrogen_discharge_tube.jpg" decoding="async" width="220" height="73" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Hydrogen_discharge_tube.jpg/330px-Hydrogen_discharge_tube.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Hydrogen_discharge_tube.jpg/440px-Hydrogen_discharge_tube.jpg 2x" data-file-width="3000" data-file-height="1000" /></a></span><div class="infobox-caption">Purple glow in its plasma state</div></td></tr><tr><th colspan="2" class="infobox-header" style="background:#ff9999">Hydrogen</th></tr><tr><th scope="row" class="infobox-label">Appearance</th><td class="infobox-data">Colorless gas</td></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9689576"></td></tr><tr><th colspan="2" class="infobox-header" style="text-align: left; background: transparant;"><a href="/wiki/Standard_atomic_weight" class="mw-redirect" title="Standard atomic weight">Standard atomic weight</a> <style data-mw-deduplicate="TemplateStyles:r6670383">.mw-parser-output .nobold{font-weight:normal}</style><span class="nobold"><i>A</i><sub>r</sub>°(H)</span></th></tr><tr><th scope="row" class="infobox-label"></th><td class="infobox-data">[<span class="nowrap"><span data-sort-value="7000100784000000000♠"></span>1.007<span style="margin-left:.25em;">84</span></span>, <span class="nowrap"><span data-sort-value="7000100811000000000♠"></span>1.008<span style="margin-left:.25em;">11</span></span>]<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><th colspan="2" class="infobox-header" style="background:#ff9999">Hydrogen in the <a href="/wiki/Periodic_table" title="Periodic table">periodic table</a></th></tr><tr><td colspan="2" class="infobox-full-data"> <table class="wikitable" style="text-align:center; width:100%; margin:0; background:#f8f8f8;"> <tbody><tr> <td> <table class="periodictable" style="margin:0 auto"> <tbody><tr> <td style="border:none; width:5px"><div style="background-color:transparent; margin:0; padding:0; text-align:center; border:none;"> <table style="empty-cells:hidden; border:none; padding:0; border-spacing:1px; border-collapse:separate; margin:0;"> <tbody><tr> <td style="border:none;padding:0;"><a class="mw-selflink selflink"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999; border:1px solid black; box-sizing: border-box;;">Hydrogen</span></a> </td> <td colspan="30" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Helium" title="Helium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Helium</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Lithium" title="Lithium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Lithium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Beryllium" title="Beryllium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Beryllium</span></a> </td> <td colspan="24" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Boron" title="Boron"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Boron</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Carbon" title="Carbon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Carbon</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nitrogen" title="Nitrogen"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Nitrogen</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Oxygen" title="Oxygen"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Oxygen</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fluorine" title="Fluorine"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Fluorine</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neon" title="Neon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Neon</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Sodium" title="Sodium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Sodium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Magnesium" title="Magnesium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Magnesium</span></a> </td> <td colspan="24" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Aluminium" title="Aluminium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Aluminium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Silicon" title="Silicon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Silicon</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Phosphorus" title="Phosphorus"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Phosphorus</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Sulfur" title="Sulfur"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Sulfur</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Chlorine" title="Chlorine"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Chlorine</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Argon" title="Argon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Argon</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Potassium" title="Potassium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Potassium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Calcium" title="Calcium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Calcium</span></a> </td> <td colspan="14" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Scandium" title="Scandium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Scandium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Titanium" title="Titanium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Titanium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Vanadium" title="Vanadium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Vanadium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Chromium" title="Chromium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Chromium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Manganese" title="Manganese"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Manganese</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iron" title="Iron"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Iron</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cobalt" title="Cobalt"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Cobalt</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nickel" title="Nickel"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Nickel</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Copper" title="Copper"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Copper</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Zinc" title="Zinc"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Zinc</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gallium" title="Gallium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Gallium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Germanium" title="Germanium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Germanium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Arsenic" title="Arsenic"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Arsenic</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Selenium" title="Selenium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Selenium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bromine" title="Bromine"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Bromine</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Krypton" title="Krypton"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Krypton</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Rubidium" title="Rubidium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Rubidium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Strontium" title="Strontium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Strontium</span></a> </td> <td style="border:none;padding:0;; width:0;"> </td> <td colspan="13" style="border:none;padding:0;"> </td> <td style="border:none;padding:0;"><a href="/wiki/Yttrium" title="Yttrium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Yttrium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Zirconium" title="Zirconium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Zirconium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Niobium" title="Niobium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Niobium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Molybdenum" title="Molybdenum"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Molybdenum</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Technetium" title="Technetium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Technetium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Ruthenium" title="Ruthenium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Ruthenium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rhodium" title="Rhodium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Rhodium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Palladium" title="Palladium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Palladium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Silver" title="Silver"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Silver</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cadmium" title="Cadmium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Cadmium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Indium" title="Indium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Indium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tin" title="Tin"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Tin</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Antimony" title="Antimony"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Antimony</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tellurium" title="Tellurium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Tellurium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iodine" title="Iodine"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Iodine</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Xenon" title="Xenon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Xenon</span></a> </td></tr> <tr style="border:none;padding:0;"> <td style="border:none;padding:0;"><a href="/wiki/Caesium" title="Caesium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Caesium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Barium" title="Barium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Barium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lanthanum" title="Lanthanum"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Lanthanum</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Cerium" title="Cerium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Cerium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Praseodymium" title="Praseodymium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Praseodymium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neodymium" title="Neodymium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Neodymium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Promethium" title="Promethium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Promethium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Samarium" title="Samarium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Samarium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Europium" title="Europium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Europium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gadolinium" title="Gadolinium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Gadolinium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Terbium" title="Terbium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Terbium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Dysprosium" title="Dysprosium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Dysprosium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Holmium" title="Holmium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Holmium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Erbium" title="Erbium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Erbium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thulium" title="Thulium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Thulium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Ytterbium" title="Ytterbium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Ytterbium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lutetium" title="Lutetium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Lutetium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Hafnium" title="Hafnium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Hafnium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tantalum" title="Tantalum"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Tantalum</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tungsten" title="Tungsten"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Tungsten</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rhenium" title="Rhenium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Rhenium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Osmium" title="Osmium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Osmium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Iridium" title="Iridium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Iridium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Platinum" title="Platinum"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Platinum</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Gold" title="Gold"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Gold</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mercury_(element)" title="Mercury (element)"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Mercury (element)</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thallium" title="Thallium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Thallium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lead" title="Lead"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Lead</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bismuth" title="Bismuth"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Bismuth</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Polonium" title="Polonium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Polonium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Astatine" title="Astatine"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Astatine</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Radon" title="Radon"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Radon</span></a> </td></tr> <tr> <td style="border:none;padding:0;"><a href="/wiki/Francium" title="Francium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Francium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Radium" title="Radium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#ff9999;">Radium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Actinium" title="Actinium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Actinium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Thorium" title="Thorium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Thorium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Protactinium" title="Protactinium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Protactinium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Uranium" title="Uranium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Uranium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Neptunium" title="Neptunium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Neptunium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Plutonium" title="Plutonium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Plutonium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Americium" title="Americium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Americium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Curium" title="Curium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Curium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Berkelium" title="Berkelium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Berkelium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Californium" title="Californium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Californium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Einsteinium" title="Einsteinium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Einsteinium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Fermium" title="Fermium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Fermium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Mendelevium" title="Mendelevium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Mendelevium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nobelium" title="Nobelium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#9bff99;">Nobelium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Lawrencium" title="Lawrencium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Lawrencium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Rutherfordium" title="Rutherfordium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Rutherfordium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Dubnium" title="Dubnium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Dubnium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Seaborgium" title="Seaborgium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Seaborgium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Bohrium" title="Bohrium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Bohrium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Hassium" title="Hassium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Hassium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Meitnerium" title="Meitnerium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Meitnerium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Darmstadtium" title="Darmstadtium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Darmstadtium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Roentgenium" title="Roentgenium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Roentgenium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Copernicium" title="Copernicium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#99ccff;">Copernicium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Nihonium" title="Nihonium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Nihonium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Flerovium" title="Flerovium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Flerovium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Moscovium" title="Moscovium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Moscovium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Livermorium" title="Livermorium"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Livermorium</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Tennessine" title="Tennessine"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Tennessine</span></a> </td> <td style="border:none;padding:0;"><a href="/wiki/Oganesson" title="Oganesson"><span style="display:block;width:6px;height:8px;overflow:hidden;padding:0;color:transparent;background-color:#fdff8c;">Oganesson</span></a> </td></tr></tbody></table> </div> </td> <td style="vertical-align:middle; text-align:center; font-size:90%; line-height:100%; width:10px; border:none;">–<br />↑<br /><strong>H</strong><br />↓<br /><a href="/wiki/Lithium" title="Lithium">Li</a> </td></tr> <tr> <td colspan="2" class="nowrap" style="text-align:center; font-size:90%; line-height:100%; padding-top:0; padding-bottom:1px; border:none;"><a href="/wiki/Neutronium" title="Neutronium">Neutronium</a> ← <strong>hydrogen</strong> → <a href="/wiki/Helium" title="Helium">helium</a> </td></tr></tbody></table> </td></tr></tbody></table></td></tr><tr><th scope="row" class="infobox-label"><span class="nowrap"><a href="/wiki/Atomic_number" title="Atomic number">Atomic number</a> <span style="font-weight:normal;">(<i>Z</i>)</span></span></th><td class="infobox-data">1</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Group_(periodic_table)" title="Group (periodic table)">Group</a></th><td class="infobox-data">group 1: hydrogen and <a href="/wiki/Alkali_metal" title="Alkali metal">alkali metals</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Period_(periodic_table)" title="Period (periodic table)">Period</a></th><td class="infobox-data"><a href="/wiki/Period_1_element" title="Period 1 element">period 1</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Block_(periodic_table)" title="Block (periodic table)">Block</a></th><td class="infobox-data"><span title="color legend: s-block" style="display:inline-block; vertical-align:middle; width:6px; height:8px; border:1px solid black; background:#ff9999"> </span> <a href="/wiki/Block_(periodic_table)#s-block" title="Block (periodic table)">s-block</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Electron_configuration" title="Electron configuration">Electron configuration</a></th><td class="infobox-data">1s<sup>1</sup></td></tr><tr><th scope="row" class="infobox-label">Electrons per shell</th><td class="infobox-data">1</td></tr><tr><th colspan="2" class="infobox-header" style="background:#ff9999">Physical properties</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Phase_(matter)" class="mw-redirect" title="Phase (matter)">Phase</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r6670383"><span class="nobold">at <span title="STP: standard temperature and pressure: 0 °C and 101.325 kPa"><a href="/wiki/Standard_temperature_and_pressure" title="Standard temperature and pressure">STP</a></span></span></th><td class="infobox-data"><a href="/wiki/Gas" title="Gas">gas</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Melting_point" title="Melting point">Melting point</a></th><td class="infobox-data">(H<span style="display:inline-block; margin-bottom:-0.3em; vertical-align:-0.4em; line-height:1.2em; font-size:70%; text-align:left;"><br />2</span>) 13.99 <a href="/wiki/Kelvin" title="Kelvin">K</a> (−259.16 °C, −434.49 °F) </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Boiling_point" title="Boiling point">Boiling point</a></th><td class="infobox-data">(H<span style="display:inline-block; margin-bottom:-0.3em; vertical-align:-0.4em; line-height:1.2em; font-size:70%; text-align:left;"><br />2</span>) 20.271 K (−252.879 °C, −423.182 °F) </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Density" title="Density">Density</a> <span style="font-weight:normal;">(at STP)</span></th><td class="infobox-data">0.08988 g/L</td></tr><tr><th scope="row" class="infobox-label"><span style="font-weight:normal;">when liquid (at <abbr title="melting point">m.p.</abbr>)</span></th><td class="infobox-data">0.07 g/cm<sup>3</sup> (solid: 0.0763 g/cm<sup>3</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></td></tr><tr><th scope="row" class="infobox-label"><span style="font-weight:normal;">when liquid (at <abbr title="boiling point">b.p.</abbr>)</span></th><td class="infobox-data">0.07099 g/cm<sup>3</sup> </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Triple_point" title="Triple point">Triple point</a></th><td class="infobox-data">13.8033 K, 7.041 kPa </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Critical_point_(thermodynamics)" title="Critical point (thermodynamics)">Critical point</a></th><td class="infobox-data">32.938 K, 1.2858 MPa </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Enthalpy_of_fusion" title="Enthalpy of fusion">Heat of fusion</a></th><td class="infobox-data">(H<span style="display:inline-block; margin-bottom:-0.3em; vertical-align:-0.4em; line-height:1.2em; font-size:70%; text-align:left;"><br />2</span>) 0.117 <a href="/wiki/Kilojoule_per_mole" title="Kilojoule per mole">kJ/mol</a> </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Enthalpy_of_vaporization" title="Enthalpy of vaporization">Heat of vaporization</a></th><td class="infobox-data">(H<span style="display:inline-block; margin-bottom:-0.3em; vertical-align:-0.4em; line-height:1.2em; font-size:70%; text-align:left;"><br />2</span>) 0.904 kJ/mol </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Molar_heat_capacity" title="Molar heat capacity">Molar heat capacity</a></th><td class="infobox-data">(H<span style="display:inline-block; margin-bottom:-0.3em; vertical-align:-0.4em; line-height:1.2em; font-size:70%; text-align:left;"><br />2</span>) 28.836 J/(mol·K) </td></tr><tr><td colspan="2" class="infobox-full-data"><a href="/wiki/Vapor_pressure" title="Vapor pressure"><b>Vapor pressure</b></a><div style="position:relative; margin:0 auto; padding:0; text-align:initial; width:-moz-fit-content;width:-webkit-fit-content;width:fit-content;"> <table class="wikitable" cellspacing="0" cellpadding="0" style="text-align:center; font-size:90%; border-collapse:collapse; margin:0; padding:0;"> <tbody><tr> <th><abbr title="Pressure (in Pascal)"><i>P</i></abbr> <span style="font-weight:normal;">(Pa)</span> </th> <th>1 </th> <th>10 </th> <th>100 </th> <th>1 k </th> <th>10 k </th> <th>100 k </th></tr> <tr> <th>at <abbr title="Temperature (in kelvins)"><i>T</i></abbr> <span style="font-weight:normal;">(K)</span> </th> <td> </td> <td> </td> <td> </td> <td> </td> <td>15 </td> <td>20 </td></tr></tbody></table> </div></td></tr><tr><th colspan="2" class="infobox-header" style="background:#ff9999">Atomic properties</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Oxidation_state" title="Oxidation state">Oxidation states</a></th><td class="infobox-data"><span style="font-size:112%;"><b>−1</b></span>, 0, <span style="font-size:112%;"><b>+1</b></span> (an <a href="/wiki/Amphoterism" class="mw-redirect" title="Amphoterism">amphoteric</a> oxide)</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Electronegativity" title="Electronegativity">Electronegativity</a></th><td class="infobox-data">Pauling scale: 2.20 </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Ionization_energy" title="Ionization energy">Ionization energies</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r8662964">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li>1st: 1312.0 kJ/mol </li><li> </li></ul></div></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Covalent_radius" title="Covalent radius">Covalent radius</a></th><td class="infobox-data">31±5 <a href="/wiki/Picometre" title="Picometre">pm</a> </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Van_der_Waals_radius" title="Van der Waals radius">Van der Waals radius</a></th><td class="infobox-data">120 pm </td></tr><tr><td colspan="2" class="infobox-full-data"><figure class="mw-default-size mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/File:Hydrogen_spectrum_visible.png" class="mw-file-description"><img alt="Color lines in a spectral range" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Hydrogen_spectrum_visible.png/240px-Hydrogen_spectrum_visible.png" decoding="async" width="240" height="41" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Hydrogen_spectrum_visible.png/360px-Hydrogen_spectrum_visible.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/87/Hydrogen_spectrum_visible.png/480px-Hydrogen_spectrum_visible.png 2x" data-file-width="7430" data-file-height="1280" /></a><figcaption></figcaption></figure><strong><a href="/wiki/Spectral_line" title="Spectral line">Spectral lines</a> of hydrogen</strong></td></tr><tr><th colspan="2" class="infobox-header" style="background:#ff9999">Other properties</th></tr><tr><th scope="row" class="infobox-label">Natural occurrence</th><td class="infobox-data"><a href="/wiki/Primordial_nuclide" title="Primordial nuclide">primordial</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Crystal_structure" title="Crystal structure">Crystal structure</a></th><td class="infobox-data"> <a href="/w/index.php?title=Hexagonal_crystal_system&action=edit&redlink=1" class="new" title="Hexagonal crystal system (not yet started)">hexagonal</a><div style="float:right;"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Hexagonal.svg" class="mw-file-description"><img alt="Hexagonal crystal structure for hydrogen" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Hexagonal.svg/50px-Hexagonal.svg.png" decoding="async" width="50" height="52" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Hexagonal.svg/75px-Hexagonal.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Hexagonal.svg/100px-Hexagonal.svg.png 2x" data-file-width="295" data-file-height="304" /></a></span></div></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Speed_of_sound" title="Speed of sound">Speed of sound</a></th><td class="infobox-data">1310 <a href="/wiki/Metre_per_second" title="Metre per second">m/s</a> (gas, 27 °C)</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Thermal_conductivity" title="Thermal conductivity">Thermal conductivity</a></th><td class="infobox-data">0.1805 W/(m⋅K) </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Magnetism" title="Magnetism">Magnetic ordering</a></th><td class="infobox-data"><a href="/wiki/Diamagnetic" class="mw-redirect" title="Diamagnetic">diamagnetic</a><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> </td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Magnetic_susceptibility" title="Magnetic susceptibility">Molar magnetic susceptibility</a></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="3005602000000000000♠"></span>−3.98<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−6</sup></span> cm<sup>3</sup>/mol (298 K)<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></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/CAS_Registry_Number" class="mw-redirect" title="CAS Registry Number">CAS Number</a></th><td class="infobox-data">12385-13-6 <br />1333-74-0 (H<span style="display:inline-block; margin-bottom:-0.3em; vertical-align:-0.4em; line-height:1.2em; font-size:70%; text-align:left;"><br />2</span>)</td></tr><tr><th colspan="2" class="infobox-header" style="background:#ff9999">History</th></tr><tr><th scope="row" class="infobox-label"><a href="/w/index.php?title=Timeline_of_chemical_element_discoveries&action=edit&redlink=1" class="new" title="Timeline of chemical element discoveries (not yet started)">Discovery</a></th><td class="infobox-data"><a href="/wiki/Henry_Cavendish" title="Henry Cavendish">Henry Cavendish</a><sup id="cite_ref-Nostrand_5-0" class="reference"><a href="#cite_note-Nostrand-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-nbb_6-0" class="reference"><a href="#cite_note-nbb-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><span class="nowrap"> (1766)</span></td></tr><tr><th scope="row" class="infobox-label">Named by</th><td class="infobox-data"><a href="/wiki/Antoine_Lavoisier" title="Antoine Lavoisier">Antoine Lavoisier</a><sup id="cite_ref-Stwertka_7-0" class="reference"><a href="#cite_note-Stwertka-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><span class="nowrap"> (1783)</span></td></tr><tr><th colspan="2" class="infobox-header" style="background:#ff9999"><a href="/wiki/Isotopes_of_hydrogen" title="Isotopes of hydrogen">Isotopes of hydrogen</a><span style="float:right; padding-right: 0.2em;"><style data-mw-deduplicate="TemplateStyles:r9122447">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Infobox_hydrogen_isotopes" title="Template:Infobox hydrogen isotopes"><abbr title="View this template">v</abbr></a></li><li class="nv-edit"><a class="external text" href="https://simple.wikipedia.org/w/index.php?title=Template:Infobox_hydrogen_isotopes&action=edit"><abbr title="Edit this template">e</abbr></a></li></ul></div></span></th></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9689576"></td></tr><tr><td colspan="2" class="infobox-full-data"> <table class="wikitable" style="text-align: center; vertical-align: middle; width: 100%; border-collapse: collapse; margin: 0; padding: 0;"> <tbody><tr> <th colspan="3">Main isotopes </th> <th colspan="2"><a href="/wiki/Radioactive_decay" title="Radioactive decay">Decay</a> </th></tr> <tr> <th> </th> <th style="padding: 0.1em;"><a href="/wiki/Natural_abundance" title="Natural abundance">abundance</a> </th> <th style="padding: 0.1em;"><a href="/wiki/Half-life" class="mw-disambig" title="Half-life">half-life</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r6670383"><span class="nobold">(<i>t</i><sub>1/2</sub>)</span> </th> <th style="padding: 0.1em;"><a href="/wiki/Radioactive_decay#Types_of_decay" title="Radioactive decay">mode</a> </th> <th style="padding: 0.1em;"><a href="/wiki/Decay_product" title="Decay product">product</a> </th></tr> <tr> <th rowspan="1" style="vertical-align: top;"><sup>1</sup>H </th> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: right;"><span class="nowrap"><span data-sort-value="6999999855000000000♠"></span>99.9855%</span> </td> <td rowspan="1" colspan="3" style="vertical-align: top; text-align: left;"><a href="/wiki/Stable_isotope" class="mw-redirect" title="Stable isotope">stable</a> </td></tr> <tr> <th rowspan="1" style="vertical-align: top;"><a href="/wiki/Deuterium" title="Deuterium"><sup>2</sup>H</a> </th> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: right;"><span class="nowrap"><span data-sort-value="6996145000000000000♠"></span>0.0145%</span> </td> <td rowspan="1" colspan="3" style="vertical-align: top; text-align: left;">stable </td></tr> <tr> <th rowspan="1" style="vertical-align: top;"><a href="/wiki/Tritium" title="Tritium"><sup>3</sup>H</a> </th> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: center;"><a href="/wiki/Trace_radioisotope" title="Trace radioisotope">trace</a> </td> <td rowspan="1" colspan="1" style="vertical-align: top; text-align: right;"><span class="nowrap"><span data-sort-value="7008388789632000000♠"></span>12.32 y</span> </td> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;"><a href="/w/index.php?title=Beta_minus_decay&action=edit&redlink=1" class="new" title="Beta minus decay (not yet started)">β<sup>−</sup></a></span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Helium-3" title="Helium-3"><sup>3</sup>He</a> </td></tr></tbody></table></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><td colspan="2" class="infobox-below noprint" style="background:#ff9999"><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Hydrogen" title="Category:Hydrogen">Category: Hydrogen</a><br /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9122447"><div class="navbar plainlinks hlist"><ul><li class="nv-view"><a href="/wiki/Template:Infobox_hydrogen" title="Template:Infobox hydrogen"><span title="View this template">view</span></a></li><li class="nv-talk"><a href="/w/index.php?title=Template_talk:Infobox_hydrogen&action=edit&redlink=1" class="new" title="Template talk:Infobox hydrogen (not yet started)"><span title="Discuss this template">talk</span></a></li><li class="nv-edit"><a class="external text" href="https://simple.wikipedia.org/w/index.php?title=Template:Infobox_hydrogen&action=edit"><span title="Edit this template">edit</span></a></li></ul></div> | <a href="/wiki/List_of_data_references_for_chemical_elements" title="List of data references for chemical elements">references</a></td></tr></tbody></table> <p><b>Hydrogen</b> is a <a href="/wiki/Chemical_element" title="Chemical element">chemical element</a>. It is the simplest element and the first in the <a href="/wiki/Periodic_table" title="Periodic table">periodic table</a>. It has the <a href="/wiki/Symbol" title="Symbol">symbol</a> <b>H</b> and <a href="/wiki/Atomic_number" title="Atomic number">atomic number</a> 1. Hydrogen also has a <a href="/wiki/Relative_atomic_mass" title="Relative atomic mass">standard atomic weight</a> of 1.008. This makes it the lightest element. Hydrogen is a gas at 15 degrees Celsius (59 degrees Fahrenheit) at <a href="/wiki/Standard_atmosphere" class="mw-redirect" title="Standard atmosphere">standard atmosphere</a> (and in many other situations). When hydrogen is in the form of <i>hydrogen gas</i>, then each <i>hydrogen molecule</i> has two <i>hydrogen atoms</i>. </p><p>In <a href="/wiki/Standard_temperature_and_pressure" title="Standard temperature and pressure">standard conditions</a>, hydrogen is a <a href="/wiki/Diatomic_molecules" title="Diatomic molecules">diatomic</a> <a href="/wiki/Gas" title="Gas">gas</a> with the <a href="/wiki/Chemical_formula" title="Chemical formula">formula</a> H<span style="display:inline-block; margin-bottom:-0.3em; vertical-align:-0.4em; line-height:1.2em; font-size:70%; text-align:left;"><br />2</span>, or <b>dihydrogen</b>.<sup id="cite_ref-:0_8-0" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> In this state, hydrogen is also called <b>hydrogen gas</b> or <b>molecular hydrogen</b>. Hydrogen has no <a href="/wiki/Colour" title="Colour">color</a>, <a href="/wiki/Olfaction" title="Olfaction">smell</a>, or <a href="/wiki/Taste" title="Taste">taste</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Hydrogen is not toxic and is very <a href="/w/index.php?title=Combustibility_and_flammability&action=edit&redlink=1" class="new" title="Combustibility and flammability (not yet started)">combustible</a>.<sup id="cite_ref-:0_8-1" class="reference"><a href="#cite_note-:0-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>Hydrogen is the most common chemical element in the <a href="/wiki/Universe" title="Universe">universe</a>. Hydrogen is almost 75% of all normal (<a href="/wiki/Baryon" title="Baryon">baryonic</a>) <a href="/wiki/Matter" title="Matter">matter</a> by <a href="/wiki/Mass" title="Mass">mass</a>.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Most <a href="/wiki/Star" title="Star">stars</a> are made of mostly hydrogen. The hydrogen in the stars are in a <a href="/wiki/Plasma_(physics)" title="Plasma (physics)">plasma state</a>. On Earth, hydrogen is seen in <a href="/wiki/Water" title="Water">water</a> and <a href="/wiki/Organic_compound" title="Organic compound">organic compounds</a>. Hydrogen's most common <a href="/wiki/Isotope" title="Isotope">isotope</a> has one <a href="/wiki/Proton" title="Proton">proton</a> and no <a href="/wiki/Neutron" title="Neutron">neutrons</a>. This isotope also has one <a href="/wiki/Electron" title="Electron">electron</a> <a href="/wiki/Atomic_orbital" title="Atomic orbital">orbiting</a> around it. </p><p>Hydrogen is usually <a href="/wiki/Nonmetal" title="Nonmetal">nonmetallic</a> and can form <a href="/wiki/Covalent_bond" title="Covalent bond">covalent bonds</a> with most <a href="/wiki/Nonmetal" title="Nonmetal">nonmetals</a>. These covalent bonds can create molecules such as <a href="/wiki/Water" title="Water">water</a> and other organic substances. Hydrogen is the main part of <a href="/wiki/Acid%E2%80%93base_reaction" title="Acid–base reaction">acid–base reactions</a>. These reactions <a href="/wiki/Exchange" class="mw-redirect" title="Exchange">exchange</a> protons in <a href="/wiki/Solubility" title="Solubility">soluble</a> molecules. In <a href="/wiki/Ionic_compound" title="Ionic compound">ionic compounds</a>, ions can either be <a href="/wiki/Anion" title="Anion">anions</a> or <a href="/wiki/Cation" title="Cation">cations</a>. Hydrogen <a href="/wiki/Anion" title="Anion">anions</a> are negatively charged and are called <a href="/wiki/Hydride" title="Hydride">hydrides</a>. Hydrogen <a href="/wiki/Cation" title="Cation">cations</a> are positively charged and are written as H<span style="display:inline-block; margin-bottom:-0.3em; vertical-align:0.8em; line-height:1.2em; font-size:70%; text-align:left;">+<br /></span>. Cations are also called protons (symbol p), because they are only made of a proton and nothing else. </p><p>Hydrogen gas was first made <a href="/wiki/Artificial" title="Artificial">artificially</a> in the 1700s. <a href="/wiki/Henry_Cavendish" title="Henry Cavendish">Henry Cavendish</a> identified hydrogen gas as a distinct substance between 1766 and 1781. </p><p>Most <a href="/w/index.php?title=Hydrogen_production&action=edit&redlink=1" class="new" title="Hydrogen production (not yet started)">hydrogen production</a> is from <a href="/w/index.php?title=Steam_reforming&action=edit&redlink=1" class="new" title="Steam reforming (not yet started)">steam reforming</a> natural gas. Hydrogen has many <a href="/wiki/Industry" title="Industry">industrial</a> uses. Hydrogen can be used to process <a href="/wiki/Fossil_fuel" title="Fossil fuel">fossil fuels</a>, <a href="/wiki/Cracking_(chemistry)" title="Cracking (chemistry)">hydrocrack</a>, and <a href="/w/index.php?title=Ammonia_production&action=edit&redlink=1" class="new" title="Ammonia production (not yet started)">produce ammonia</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Properties">Properties</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=1" title="Change section: Properties" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=1" title="Edit section's source code: Properties"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Hydrogen is grouped as a <a href="/wiki/Nonmetal" title="Nonmetal">reactive nonmetal</a>. This is different from the other elements found in the first <a href="/wiki/Group_(periodic_table)" title="Group (periodic table)">group</a> of the periodic table, which are called <a href="/wiki/Alkali_metal" title="Alkali metal">alkali metals</a>. Only the solid form of hydrogen should behave like a metal, though. </p><p>When hydrogen is by itself, it will normally <a href="/wiki/Chemical_bond" title="Chemical bond">bind</a> with itself to make <b>dihydrogen</b> (H<sub>2</sub>). Dihydrogen is very <a href="https://simple.wiktionary.org/wiki/stable" class="extiw" title="wikt:stable">stable</a> because of its high <a href="/w/index.php?title=Bond-dissociation_energy&action=edit&redlink=1" class="new" title="Bond-dissociation energy (not yet started)">bond-dissociation energy</a> of 435.7 kJ/mol.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>At <a href="/wiki/Standard_temperature_and_pressure" title="Standard temperature and pressure">normal temperature and pressure</a>, hydrogen gas (H<sub>2</sub>) has no <a href="/wiki/Colour" title="Colour">color</a>, smell, or <a href="/wiki/Taste" title="Taste">taste</a>.<sup id="cite_ref-:1_12-0" class="reference"><a href="#cite_note-:1-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> It is also not <a href="/wiki/Poison" title="Poison">poisonous</a>. This is because it is a <a href="/wiki/Nonmetal" title="Nonmetal">nonmetal</a> and burns very easily.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citing_sources" title="Wikipedia:Citing sources"><span title="This claim needs references to reliable sources. (May 2024)">source?</span></a></i>]</sup> Hydrogen gas at this state also has low <a href="/wiki/Density" title="Density">density</a> and is not <a href="/wiki/Corrosive_substance" title="Corrosive substance">corrosive</a>.<sup id="cite_ref-:1_12-1" class="reference"><a href="#cite_note-:1-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Combustion">Combustion</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=2" title="Change section: Combustion" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=2" title="Edit section's source code: Combustion"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Molecule" title="Molecule">Molecular</a> hydrogen is <a href="https://simple.wiktionary.org/wiki/flammable" class="extiw" title="wikt:flammable">flammable</a> and <a href="/wiki/Chemical_reaction" title="Chemical reaction">reacts</a> with <a href="/wiki/Oxygen" title="Oxygen">oxygen</a>: </p><p>2 H<sub>2</sub>(g) + O<sub>2</sub>(g) → 2 H<sub>2</sub>O(l) + 572 kJ (286 kJ/mol) </p><p>At <a href="/wiki/Temperature" title="Temperature">temperatures</a> higher than 500 °<a href="/wiki/Celsius" title="Celsius">C</a>, hydrogen suddenly burns in air. This is called hydrogen <a href="/w/index.php?title=Autoignition_temperature&action=edit&redlink=1" class="new" title="Autoignition temperature (not yet started)">autoignition temperature</a>.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Compounds">Compounds</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=3" title="Change section: Compounds" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=3" title="Edit section's source code: Compounds"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>While hydrogen <a href="/wiki/Gas" title="Gas">gas</a> in its natural form is not <a href="/wiki/Reactivity_(chemistry)" title="Reactivity (chemistry)">reactive</a>, it does form <a href="/wiki/Chemical_compound" title="Chemical compound">compounds</a> with many elements, especially <a href="/wiki/Halogen" title="Halogen">halogens</a>, which are very <a href="/wiki/Electronegativity" title="Electronegativity">electronegative</a>, meaning they want an <a href="/wiki/Electron" title="Electron">electron</a> very badly. Hydrogen also forms massive <a href="https://simple.wiktionary.org/wiki/array" class="extiw" title="wikt:array">arrays</a> with <a href="/wiki/Carbon" title="Carbon">carbon</a> <a href="/wiki/Atom" title="Atom">atoms</a>, forming <a href="/wiki/Hydrocarbon" title="Hydrocarbon">hydrocarbons</a>. The <a href="https://simple.wiktionary.org/wiki/study" class="extiw" title="wikt:study">study</a> of the properties of hydrocarbons is known as <a href="/wiki/Organic_chemistry" title="Organic chemistry">organic chemistry</a>. </p><p>The H<sup>-</sup> <a href="/wiki/Anion" title="Anion">anion</a> (negatively <a href="/wiki/Electric_charge" title="Electric charge">charged</a> atom) is named a <a href="/wiki/Hydride" title="Hydride">hydride</a>, though the word is not commonly used. An example of a hydride is <a href="/w/index.php?title=Lithium_hydride&action=edit&redlink=1" class="new" title="Lithium hydride (not yet started)">lithium hydride</a> (LiH), which is used as a "<a href="/wiki/Spark_plug" title="Spark plug">spark plug</a>" in <a href="/wiki/Nuclear_weapons" class="mw-redirect" title="Nuclear weapons">nuclear weapons</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Acids">Acids</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=4" title="Change section: Acids" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=4" title="Edit section's source code: Acids"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Acid" title="Acid">Acids</a> <a href="/wiki/Dissolution" class="mw-redirect" title="Dissolution">dissolved</a> in water normally <a href="https://simple.wiktionary.org/wiki/contain" class="extiw" title="wikt:contain">contain</a> high levels of hydrogen <a href="/wiki/Ion" title="Ion">ions</a>, in other words, free <a href="/wiki/Proton" title="Proton">protons</a>. Their level is generally used to <a href="https://simple.wiktionary.org/wiki/determine" class="extiw" title="wikt:determine">determine</a> its <a href="/wiki/PH" title="PH">pH</a>, that is, the <a href="https://simple.wiktionary.org/wiki/content" class="extiw" title="wikt:content">content</a> of hydrogen ions in a volume. For example, <a href="/wiki/Hydrochloric_acid" title="Hydrochloric acid">hydrochloric acid</a>, found in people's stomachs, can <a href="/w/index.php?title=Dissociation_(chemistry)&action=edit&redlink=1" class="new" title="Dissociation (chemistry) (not yet started)">dissociate</a> into a <a href="/wiki/Chloride" title="Chloride">chloride</a> anion and a free proton, and the property of the free proton is how it can digest food by <a href="/wiki/Corrosion" title="Corrosion">corroding</a> it. </p><p>Though uncommon on Earth, the H<sub>3</sub><sup>+</sup> <a href="/wiki/Cation" title="Cation">cation</a> is one of the most common ions in the universe. </p> <div class="mw-heading mw-heading3"><h3 id="Isotopes">Isotopes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=5" title="Change section: Isotopes" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=5" title="Edit section's source code: Isotopes"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r9671799">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">See the main article: <a href="/wiki/Isotopes_of_hydrogen" title="Isotopes of hydrogen">Isotopes of hydrogen</a></div> <p>Hydrogen has 7 known isotopes, two of which are stable (<sup>1</sup>H and <sup>2</sup>H), which are commonly named <a href="/wiki/Protium" class="mw-redirect" title="Protium">protium</a> and <a href="/wiki/Deuterium" title="Deuterium">deuterium</a>. The isotope <sup>3</sup>H is known as <a href="/wiki/Tritium" title="Tritium">tritium</a>, has a <a href="/wiki/Half-life_(element)" title="Half-life (element)">half-life</a> of 12.33 years, and is produced in small amounts by <a href="/wiki/Cosmic_ray" title="Cosmic ray">cosmic rays</a>. The 4 isotopes left have half-lives on the scale of <a href="/wiki/Orders_of_magnitude_(time)#Seconds" title="Orders of magnitude (time)">yoctoseconds</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Hydrogen_in_nature">Hydrogen in nature</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=6" title="Change section: Hydrogen in nature" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=6" title="Edit section's source code: Hydrogen in nature"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In its natural form on Earth, hydrogen is generally a <a href="/wiki/Gas" title="Gas">gas</a>. Hydrogen is also one of the parts that make up a <a href="/wiki/Water" title="Water">water</a> molecule. Hydrogen is important because it is the <a href="/wiki/Fuel" title="Fuel">fuel</a> that powers the <a href="/wiki/Sun" title="Sun">Sun</a> and other stars. Hydrogen makes up about 74% of the complete <a href="/wiki/Universe" title="Universe">universe</a>.<sup id="cite_ref-ut_14-0" class="reference"><a href="#cite_note-ut-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </p><p>Natural hydrogen is normally made of two hydrogen <a href="/wiki/Atom" title="Atom">atoms</a> connected together. Scientists name these <a href="/wiki/Diatomic_molecules" title="Diatomic molecules">diatomic molecules</a>. Hydrogen will have a <a href="/wiki/Chemical_reaction" title="Chemical reaction">chemical reaction</a> when mixed with most other elements, though it has no <a href="/wiki/Color" class="mw-redirect" title="Color">color</a> or <a href="/wiki/Odor" title="Odor">smell</a>. </p><p>Natural hydrogen is very uncommon in the <a href="/wiki/Earth" title="Earth">Earth</a>'s <a href="/wiki/Atmosphere_of_Earth" title="Atmosphere of Earth">atmosphere</a>, because nearly all <a href="https://simple.wiktionary.org/wiki/en:primordial" class="extiw" title="wikt:en:primordial">primordial</a> hydrogen would have <a href="https://simple.wiktionary.org/wiki/escape" class="extiw" title="wikt:escape">escaped</a> into space because of its weight. In nature, it is generally in <a href="/wiki/Water" title="Water">water</a>. Hydrogen is also in all living things, as a part of the <a href="/wiki/Organic_compound" title="Organic compound">organic compounds</a> that living things are made of. In addition, hydrogen atoms can join with <a href="/wiki/Carbon" title="Carbon">carbon</a> atoms to form <a href="/wiki/Hydrocarbon" title="Hydrocarbon">hydrocarbons</a>. <a href="/wiki/Petroleum" title="Petroleum">Petroleum</a> and other <a href="/wiki/Fossil_fuel" title="Fossil fuel">fossil fuels</a> are made of these hydrocarbons and commonly used to make <a href="/wiki/Energy" title="Energy">energy</a>. </p><p>Some other facts about hydrogen: </p> <ul><li>It is a gas at <a href="/wiki/Room_temperature" title="Room temperature">room temperature</a></li> <li>It acts like a <a href="/wiki/Metal" title="Metal">metal</a> when it is solid.</li> <li>It is the lightest element in the <a href="/wiki/Universe" title="Universe">Universe</a>.</li> <li>It is the most common element in the Universe.<sup id="cite_ref-EIA_15-0" class="reference"><a href="#cite_note-EIA-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup></li> <li>It burns or <a href="/wiki/Explosion" title="Explosion">explodes</a> at temperatures higher than 1000°F / 528°C, such as in <a href="/wiki/Fire" title="Fire">fire</a>.</li> <li>It <a href="https://simple.wiktionary.org/wiki/glow" class="extiw" title="wikt:glow">glows</a> <a href="/wiki/Purple" title="Purple">purple</a> when it is in <a href="/wiki/Plasma_(physics)" title="Plasma (physics)">plasma</a> <a href="/wiki/States_of_matter" title="States of matter">state</a>.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="History_of_Hydrogen">History of Hydrogen</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=7" title="Change section: History of Hydrogen" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=7" title="Edit section's source code: History of Hydrogen"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Hydrogen was first separated in 1671 by <a href="/wiki/Robert_Boyle" title="Robert Boyle">Robert Boyle</a>.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> In 1776, <a href="/wiki/Henry_Cavendish" title="Henry Cavendish">Henry Cavendish</a> <a href="https://simple.wiktionary.org/wiki/identify" class="extiw" title="wikt:identify">identified</a> it as its own <a href="/wiki/Elementary_particle" title="Elementary particle">element</a> and named it "inflammable air". He saw in 1781 that burning it made water.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Nostrand_5-1" class="reference"><a href="#cite_note-Nostrand-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-nbb_6-1" class="reference"><a href="#cite_note-nbb-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><span><video id="mwe_player_0" poster="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Emissions_Spectra.webm/220px--Emissions_Spectra.webm.jpg" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" height="124" data-durationhint="290" data-mwtitle="Emissions_Spectra.webm" data-mwprovider="wikimediacommons" resource="/wiki/File:Emissions_Spectra.webm"><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/0/0a/Emissions_Spectra.webm/Emissions_Spectra.webm.480p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="480p.vp9.webm" data-width="854" data-height="480" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/0/0a/Emissions_Spectra.webm/Emissions_Spectra.webm.720p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="720p.vp9.webm" data-width="1280" data-height="720" /><source src="//upload.wikimedia.org/wikipedia/commons/0/0a/Emissions_Spectra.webm" type="video/webm; codecs="vp8, vorbis"" data-width="1280" data-height="720" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/0/0a/Emissions_Spectra.webm/Emissions_Spectra.webm.144p.mjpeg.mov" type="video/quicktime" data-transcodekey="144p.mjpeg.mov" data-width="256" data-height="144" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/0/0a/Emissions_Spectra.webm/Emissions_Spectra.webm.240p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="240p.vp9.webm" data-width="426" data-height="240" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/0/0a/Emissions_Spectra.webm/Emissions_Spectra.webm.360p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="360p.vp9.webm" data-width="640" data-height="360" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/0/0a/Emissions_Spectra.webm/Emissions_Spectra.webm.360p.webm" type="video/webm; codecs="vp8, vorbis"" data-transcodekey="360p.webm" data-width="640" data-height="360" /><track src="https://commons.wikimedia.org/w/api.php?action=timedtext&title=File%3AEmissions_Spectra.webm&lang=en&trackformat=vtt&origin=%2A" kind="subtitles" type="text/vtt" srclang="en" label="English ‪(en)‬" data-dir="ltr" /></video></span><figcaption>Hydrogen Spectrum Test</figcaption></figure> <p><a href="/wiki/Antoine_Lavoisier" title="Antoine Lavoisier">Antoine Lavoisier</a> gave Hydrogen its name, from the <a href="/wiki/Greek_language" title="Greek language">Greek</a> word for <a href="/wiki/Water" title="Water">water</a>, 'υδορ (read /HEEW-dor/) and gennen meaning to "produce"<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> as it forms water in a <a href="/wiki/Chemical_reaction" title="Chemical reaction">chemical reaction</a> with <a href="/wiki/Oxygen" title="Oxygen">oxygen</a>.<sup id="cite_ref-nbb2_20-0" class="reference"><a href="#cite_note-nbb2-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Big_Bang_(or_the_creation_of_our_universe)"><span id="Big_Bang_.28or_the_creation_of_our_universe.29"></span>Big Bang (or the creation of our universe)</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=8" title="Change section: Big Bang (or the creation of our universe)" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=8" title="Edit section's source code: Big Bang (or the creation of our universe)"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Hydrogen did not<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> begin to form a second after the <a href="/wiki/Big_Bang" title="Big Bang">Big Bang</a>. These hydrogens did not have any <a href="/wiki/Neutron" title="Neutron">neutrons</a> or <a href="/wiki/Electron" title="Electron">electrons</a>. The first neutral hydrogen with an electron would not form until 380,000 years later during the <a href="/w/index.php?title=Recombination_(cosmology)&action=edit&redlink=1" class="new" title="Recombination (cosmology) (not yet started)">recombination epoch</a>, when the universe was cold enough for hydrogens to attract electrons.<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Uses_of_Hydrogen">Uses of Hydrogen</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=9" title="Change section: Uses of Hydrogen" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=9" title="Edit section's source code: Uses of Hydrogen"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The most common uses are in the <a href="/wiki/Petroleum" title="Petroleum">petroleum</a> industry and in making <a href="/wiki/Ammonia" title="Ammonia">ammonia</a> by the <a href="/wiki/Haber_process" title="Haber process">Haber process</a>. Some is used in other places in the <a href="/wiki/Chemical_substance" title="Chemical substance">chemical</a> industry. A little of it is used as <a href="/wiki/Fuel" title="Fuel">fuel</a>, for example in <a href="/wiki/Rocket" title="Rocket">rockets</a> for <a href="/wiki/Spacecraft" title="Spacecraft">spacecraft</a>. Most of the hydrogen that people use comes from a <a href="/wiki/Chemical_reaction" title="Chemical reaction">chemical reaction</a> between <a href="/wiki/Natural_gas" title="Natural gas">natural gas</a> and <a href="/wiki/Steam" title="Steam">steam</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Nuclear_fusion">Nuclear fusion</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=10" title="Change section: Nuclear fusion" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=10" title="Edit section's source code: Nuclear fusion"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Nuclear_fusion" title="Nuclear fusion">Nuclear fusion</a> is a very powerful <a href="https://simple.wiktionary.org/wiki/source" class="extiw" title="wikt:source">source</a> of <a href="/wiki/Energy" title="Energy">energy</a>. It depends on forcing <a href="/wiki/Atom" title="Atom">atoms</a> together to make <a href="/wiki/Helium" title="Helium">helium</a> and energy, as in a <a href="/wiki/Star" title="Star">star</a> like the <a href="/wiki/Sun" title="Sun">Sun</a>, or in a <a href="/wiki/Nuclear_weapon" title="Nuclear weapon">hydrogen bomb</a>. This needs a large amount of energy to get started, and is not easy to do currently. A big <a href="https://simple.wiktionary.org/wiki/advantage" class="extiw" title="wikt:advantage">advantage</a> over <a href="/wiki/Nuclear_fission" title="Nuclear fission">nuclear fission</a>, which is used in today's <a href="/wiki/Nuclear_power" title="Nuclear power">nuclear power</a> stations, is that it makes less nuclear waste and does not use a poisonous and uncommon <a href="/wiki/Fuel" title="Fuel">fuel</a> like <a href="/wiki/Uranium" title="Uranium">uranium</a>. More than 600 million <a href="/wiki/Ton" class="mw-disambig" title="Ton">tons</a> of hydrogen undergo fusion every second on the Sun.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Using_hydrogen">Using hydrogen</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=11" title="Change section: Using hydrogen" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=11" title="Edit section's source code: Using hydrogen"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Hydrogen is mostly used in the petroleum industry, to change heavy petroleum parts into lighter, more useful ones. It is also used to make <a href="/wiki/Ammonia" title="Ammonia">ammonia</a>. Smaller amounts are burned as fuel. Most hydrogen is made by a reaction between <a href="/wiki/Natural_gas" title="Natural gas">natural gas</a> and <a href="/wiki/Steam" title="Steam">steam</a>. </p><p>The <a href="/wiki/Electrolysis_of_water" title="Electrolysis of water">electrolysis of water</a> breaks water into hydrogen and oxygen, using electricity. Burning hydrogen joins with oxygen molecules to make <a href="/wiki/Steam" title="Steam">steam</a> (natural water vapor). A <a href="/wiki/Fuel_cell" title="Fuel cell">fuel cell</a> joins hydrogen with an oxygen <a href="/wiki/Molecule" title="Molecule">molecule</a>, <a href="https://simple.wiktionary.org/wiki/release" class="extiw" title="wikt:release">releasing</a> an electron as electricity. For these reasons, many people believe hydrogen power will replace other <a href="/wiki/Synthetic_fuel" title="Synthetic fuel">synthetic fuels</a> in the future. </p><p>Hydrogen can also be burned to make heat for <a href="/wiki/Steam_turbine" title="Steam turbine">steam turbines</a> or <a href="/wiki/Internal_combustion_engine" title="Internal combustion engine">internal combustion engines</a>. Like other synthetic fuels, hydrogen can be made from natural fuels such as <a href="/wiki/Coal" title="Coal">coal</a> or natural gas, or from electricity, and therefore represents a valuable addition to the <a href="/wiki/Electric_power_transmission" title="Electric power transmission">power grid</a>; in the same <a href="https://simple.wiktionary.org/wiki/role" class="extiw" title="wikt:role">role</a> as <a href="/wiki/Natural_gas" title="Natural gas">natural gas</a>. Such a grid and <a href="https://simple.wiktionary.org/wiki/infrastructure" class="extiw" title="wikt:infrastructure">infrastructure</a> with <a href="/wiki/Fuel_cell_vehicle" title="Fuel cell vehicle">fuel cell vehicles</a> is now <a href="https://simple.wiktionary.org/wiki/plan" class="extiw" title="wikt:plan">planned</a> by a number of countries, such as Japan, Korea and many European countries. This lets these countries <a href="https://simple.wiktionary.org/wiki/buy" class="extiw" title="wikt:buy">buy</a> less <a href="/wiki/Petroleum" title="Petroleum">petroleum</a>, which is an <a href="https://simple.wiktionary.org/wiki/economic" class="extiw" title="wikt:economic">economic</a> advantage. The other advantage is that, used in a fuel cell or burned in a combustion engine as in a <a href="/wiki/Hydrogen_car" title="Hydrogen car">hydrogen car</a>, the engine does not make <a href="/wiki/Pollution" title="Pollution">pollution</a>. Only water, and a small amount of <a href="/wiki/Nitrogen_oxide" class="mw-disambig" title="Nitrogen oxide">nitrogen oxides</a>, forms. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=12" title="Change section: References" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=12" title="Edit section's source code: References"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r9724317">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r9724332">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.ciaaw.org/hydrogen.htm">"Standard Atomic Weights: Hydrogen"</a>. <a href="/w/index.php?title=Commission_on_Isotopic_Abundances_and_Atomic_Weights&action=edit&redlink=1" class="new" title="Commission on Isotopic Abundances and Atomic Weights (not yet started)">CIAAW</a>. 2009.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Standard+Atomic+Weights%3A+Hydrogen&rft.pub=CIAAW&rft.date=2009&rft_id=https%3A%2F%2Fwww.ciaaw.org%2Fhydrogen.htm&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFWiberg,_EgonWiberg,_NilsHolleman,_Arnold_Frederick2001" class="citation book cs1">Wiberg, Egon; Wiberg, Nils; Holleman, Arnold Frederick (2001). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=vEwj1WZKThEC&pg=PA240"><i>Inorganic chemistry</i></a>. Academic Press. p. 240. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0123526519" title="Special:BookSources/978-0123526519"><bdi>978-0123526519</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Inorganic+chemistry&rft.pages=240&rft.pub=Academic+Press&rft.date=2001&rft.isbn=978-0123526519&rft.au=Wiberg%2C+Egon&rft.au=Wiberg%2C+Nils&rft.au=Holleman%2C+Arnold+Frederick&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DvEwj1WZKThEC%26pg%3DPA240&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFLide,_D._R.2005" class="citation book cs1">Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110303222309/http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf"><i>CRC Handbook of Chemistry and Physics</i></a> <span class="cs1-format">(PDF)</span> (86th ed.). Boca Raton (FL): CRC Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8493-0486-6" title="Special:BookSources/978-0-8493-0486-6"><bdi>978-0-8493-0486-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Magnetic+susceptibility+of+the+elements+and+inorganic+compounds&rft.btitle=CRC+Handbook+of+Chemistry+and+Physics&rft.place=Boca+Raton+%28FL%29&rft.edition=86th&rft.pub=CRC+Press&rft.date=2005&rft.isbn=978-0-8493-0486-6&rft_id=https%3A%2F%2Fweb.archive.org%2Fweb%2F20110303222309%2Fhttp%3A%2F%2Fwww-d0.fnal.gov%2Fhardware%2Fcal%2Flvps_info%2Fengineering%2Felementmagn.pdf&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFWeast1984" class="citation book cs1">Weast, Robert (1984). <i>CRC, Handbook of Chemistry and Physics</i>. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8493-0464-4" title="Special:BookSources/978-0-8493-0464-4"><bdi>978-0-8493-0464-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=CRC%2C+Handbook+of+Chemistry+and+Physics&rft.place=Boca+Raton%2C+Florida&rft.pages=E110&rft.pub=Chemical+Rubber+Company+Publishing&rft.date=1984&rft.isbn=978-0-8493-0464-4&rft.aulast=Weast&rft.aufirst=Robert&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-Nostrand-5"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-Nostrand_5-0">5.0</a></sup> <sup><a href="#cite_ref-Nostrand_5-1">5.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation encyclopaedia cs1">"Hydrogen". <i>Van Nostrand's Encyclopedia of Chemistry</i>. Wylie-Interscience. 2005. pp. 797–799. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-471-61525-5" title="Special:BookSources/978-0-471-61525-5"><bdi>978-0-471-61525-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Hydrogen&rft.btitle=Van+Nostrand%27s+Encyclopedia+of+Chemistry&rft.pages=797-799&rft.pub=Wylie-Interscience&rft.date=2005&rft.isbn=978-0-471-61525-5&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-nbb-6"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-nbb_6-0">6.0</a></sup> <sup><a href="#cite_ref-nbb_6-1">6.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFEmsley2001" class="citation book cs1">Emsley, John (2001). <i>Nature's Building Blocks</i>. Oxford: Oxford University Press. pp. 183–191. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-850341-5" title="Special:BookSources/978-0-19-850341-5"><bdi>978-0-19-850341-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Nature%27s+Building+Blocks&rft.place=Oxford&rft.pages=183-191&rft.pub=Oxford+University+Press&rft.date=2001&rft.isbn=978-0-19-850341-5&rft.aulast=Emsley&rft.aufirst=John&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-Stwertka-7"><span class="mw-cite-backlink"><a href="#cite_ref-Stwertka_7-0">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFStwertka1996" class="citation book cs1">Stwertka, Albert (1996). <i>A Guide to the Elements</i>. Oxford University Press. pp. 16–21. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-508083-4" title="Special:BookSources/978-0-19-508083-4"><bdi>978-0-19-508083-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Guide+to+the+Elements&rft.pages=16-21&rft.pub=Oxford+University+Press&rft.date=1996&rft.isbn=978-0-19-508083-4&rft.aulast=Stwertka&rft.aufirst=Albert&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-:0-8"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-:0_8-0">8.0</a></sup> <sup><a href="#cite_ref-:0_8-1">8.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFPubChem" class="citation web cs1">PubChem. <a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/783">"Hydrogen"</a>. <i>pubchem.ncbi.nlm.nih.gov</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-05-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=pubchem.ncbi.nlm.nih.gov&rft.atitle=Hydrogen&rft.au=PubChem&rft_id=https%3A%2F%2Fpubchem.ncbi.nlm.nih.gov%2Fcompound%2F783&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><a href="#cite_ref-9">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.britannica.com/science/hydrogen">"Hydrogen | Properties, Uses, & Facts | Britannica"</a>. <i>www.britannica.com</i>. 2024-05-05<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-05-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.britannica.com&rft.atitle=Hydrogen+%7C+Properties%2C+Uses%2C+%26+Facts+%7C+Britannica&rft.date=2024-05-05&rft_id=https%3A%2F%2Fwww.britannica.com%2Fscience%2Fhydrogen&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><a href="#cite_ref-10">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www2.lbl.gov/abc/wallchart/chapters/10/0.html">"Origin of the Elements"</a>. <i>www2.lbl.gov</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-05-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www2.lbl.gov&rft.atitle=Origin+of+the+Elements&rft_id=https%3A%2F%2Fwww2.lbl.gov%2Fabc%2Fwallchart%2Fchapters%2F10%2F0.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><a href="#cite_ref-11">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFLide2006" class="citation book cs1">Lide, David R., ed. (2006). <i>CRC Handbook of Chemistry and Physics</i> (87th ed.). Boca Raton, FL: <a href="/w/index.php?title=CRC_Press&action=edit&redlink=1" class="new" title="CRC Press (not yet started)">CRC Press</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-8493-0487-3" title="Special:BookSources/0-8493-0487-3"><bdi>0-8493-0487-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=CRC+Handbook+of+Chemistry+and+Physics&rft.place=Boca+Raton%2C+FL&rft.edition=87th&rft.pub=CRC+Press&rft.date=2006&rft.isbn=0-8493-0487-3&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-:1-12"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-:1_12-0">12.0</a></sup> <sup><a href="#cite_ref-:1_12-1">12.1</a></sup></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20240128030340/http://www.hysafe.org/download/997">"Hydrogen Fundamentals"</a>. <i>hysafe/org</i>. Archived from <a rel="nofollow" class="external text" href="http://www.hysafe.org/download/997">the original</a> on 2024-01-28<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-05-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=hysafe%2Forg&rft.atitle=Hydrogen+Fundamentals&rft_id=http%3A%2F%2Fwww.hysafe.org%2Fdownload%2F997&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><a href="#cite_ref-13">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFPatnaik2007" class="citation book cs1">Patnaik, P. (2007). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=-CRRJBVv5d0C&pg=PA402"><i>A Comprehensive Guide to the Hazardous Properties of Chemical Substances</i></a>. Wiley-Interscience. p. 402. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-471-71458-3" title="Special:BookSources/978-0-471-71458-3"><bdi>978-0-471-71458-3</bdi></a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210126131413/https://books.google.com/books?id=-CRRJBVv5d0C&pg=PA402">Archived</a> from the original on 26 January 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">3 September</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Comprehensive+Guide+to+the+Hazardous+Properties+of+Chemical+Substances&rft.pages=402&rft.pub=Wiley-Interscience&rft.date=2007&rft.isbn=978-0-471-71458-3&rft.aulast=Patnaik&rft.aufirst=P.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D-CRRJBVv5d0C%26pg%3DPA402&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-ut-14"><span class="mw-cite-backlink"><a href="#cite_ref-ut_14-0">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFCain2016" class="citation web cs1">Cain, Fraser, <i>Universe Today</i> (November 7, 2016). <a rel="nofollow" class="external text" href="http://phys.org/news/2016-11-universe.html">"When was the first light in the universe?"</a>. Phys.org. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20161218150639/http://phys.org/news/2016-11-universe.html">Archived</a> from the original on 18 December 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">29 November</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=When+was+the+first+light+in+the+universe%3F&rft.pub=Phys.org&rft.date=2016-11-07&rft.aulast=Cain&rft.aufirst=Fraser%2C+%27%27Universe+Today%27%27&rft_id=http%3A%2F%2Fphys.org%2Fnews%2F2016-11-universe.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_web" title="Template:Cite web">cite web</a>}}</code>: CS1 maint: multiple names: authors list (<a href="/wiki/Category:CS1_maint:_multiple_names:_authors_list" title="Category:CS1 maint: multiple names: authors list">link</a>)</span></span> </li> <li id="cite_note-EIA-15"><span class="mw-cite-backlink"><a href="#cite_ref-EIA_15-0">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.eia.doe.gov/kids/energyfacts/sources/IntermediateHydrogen.html">"EIA.doe.gov - What is Hydrogen?"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090205025706/http://eia.doe.gov/kids/energyfacts/sources/IntermediateHydrogen.html">Archived</a> from the original on 2009-02-05<span class="reference-accessdate">. Retrieved <span class="nowrap">2008-12-22</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=EIA.doe.gov+-+What+is+Hydrogen%3F&rft_id=http%3A%2F%2Fwww.eia.doe.gov%2Fkids%2Fenergyfacts%2Fsources%2FIntermediateHydrogen.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><a href="#cite_ref-16">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20120420074957/http://www.chemrec.se/Syngas_the_link_from_feedstock_to_synthetic_product.aspx">"The magic of syngas"</a>. <i>chemrec.se</i>. 2012. Archived from <a rel="nofollow" class="external text" href="http://www.chemrec.se/Syngas_the_link_from_feedstock_to_synthetic_product.aspx">the original</a> on 20 April 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">7 March</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=chemrec.se&rft.atitle=The+magic+of+syngas&rft.date=2012&rft_id=http%3A%2F%2Fwww.chemrec.se%2FSyngas_the_link_from_feedstock_to_synthetic_product.aspx&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><a href="#cite_ref-17">↑</a></span> <span class="reference-text">Boyle, R. (1672). "Tracts written by the Honourable Robert Boyle containing new experiments, touching the relation betwixt flame and air..." London.</span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><a href="#cite_ref-18">↑</a></span> <span class="reference-text">Boyle, R. (1672). "Tracts written by the Honourable Robert Boyle containing new experiments, touching the relation betwixt flame and air..." London.</span> </li> <li id="cite_note-19"><span class="mw-cite-backlink"><a href="#cite_ref-19">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFStwertka1996" class="citation book cs1">Stwertka, Albert (1996). <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/guidetoelements00stwe"><i>A Guide to the Elements</i></a></span>. Oxford University Press. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/guidetoelements00stwe/page/16">16–21</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-508083-4" title="Special:BookSources/978-0-19-508083-4"><bdi>978-0-19-508083-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Guide+to+the+Elements&rft.pages=16-21&rft.pub=Oxford+University+Press&rft.date=1996&rft.isbn=978-0-19-508083-4&rft.aulast=Stwertka&rft.aufirst=Albert&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fguidetoelements00stwe&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-nbb2-20"><span class="mw-cite-backlink"><a href="#cite_ref-nbb2_20-0">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFEmsley2001" class="citation book cs1">Emsley, John (2001). <i>Nature's Building Blocks</i>. Oxford: Oxford University Press. pp. 183–191. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-850341-5" title="Special:BookSources/978-0-19-850341-5"><bdi>978-0-19-850341-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Nature%27s+Building+Blocks&rft.place=Oxford&rft.pages=183-191&rft.pub=Oxford+University+Press&rft.date=2001&rft.isbn=978-0-19-850341-5&rft.aulast=Emsley&rft.aufirst=John&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-21"><span class="mw-cite-backlink"><a href="#cite_ref-21">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external free" href="https://www.astronomy.com/science/how-did-the-first-element-form-after-the-big-bang/">https://www.astronomy.com/science/how-did-the-first-element-form-after-the-big-bang/</a>. Retrieved 2024-10-21</span> </li> <li id="cite_note-22"><span class="mw-cite-backlink"><a href="#cite_ref-22">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://science.nasa.gov/mission/webb/early-universe/">"Early Universe - NASA Science"</a>. <i>science.nasa.gov</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-05-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=science.nasa.gov&rft.atitle=Early+Universe+-+NASA+Science&rft_id=https%3A%2F%2Fscience.nasa.gov%2Fmission%2Fwebb%2Fearly-universe%2F&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><a href="#cite_ref-23">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.iter.org/sci/whatisfusion">"What is Fusion?"</a>. <i>iter.org</i>. ITER Organization. 2012. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120306200347/http://www.iter.org/sci/whatisfusion">Archived</a> from the original on 6 March 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">7 March</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=iter.org&rft.atitle=What+is+Fusion%3F&rft.date=2012&rft_id=http%3A%2F%2Fwww.iter.org%2Fsci%2Fwhatisfusion&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> <li id="cite_note-24"><span class="mw-cite-backlink"><a href="#cite_ref-24">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20111106095009/http://helios.gsfc.nasa.gov/qa_sun.html">"NASA's Cosmicopia"</a>. NASA. Archived from <a rel="nofollow" class="external text" href="https://helios.gsfc.nasa.gov/qa_sun.html">the original</a> on 6 November 2011<span class="reference-accessdate">. Retrieved <span class="nowrap">28 February</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=NASA%27s+Cosmicopia&rft.pub=NASA&rft_id=http%3A%2F%2Fhelios.gsfc.nasa.gov%2Fqa_sun.html&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AHydrogen" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Other_websites">Other websites</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Hydrogen&veaction=edit&section=13" title="Change section: Other websites" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Hydrogen&action=edit&section=13" title="Edit section's source code: Other websites"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://en.citizendium.org/wiki/Hydrogen">Hydrogen</a> - Citizendium</li></ul> <table class="navbox collapsible uncollapsed"> <tbody><tr> <th colspan="32"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9122447"><div class="navbar plainlinks hlist navbar-collapse navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Periodic_Table" title="Template:Periodic Table"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Periodic_Table" title="Template talk:Periodic Table"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a class="external text" href="https://simple.wikipedia.org/w/index.php?title=Template:Periodic_Table&action=edit"><abbr title="Edit this template">e</abbr></a></li></ul></div><div class="navbar-ct-mini"><a href="/wiki/Periodic_table" title="Periodic table">Periodic table</a></div> </th></tr> <tr> <td width="3.125%" style="background-color:#a0ffa0"><a class="mw-selflink selflink">H</a> </td> <td width="3.125%" colspan="30">  </td> <td width="3.125%" style="background-color:#c0ffff"><a href="/wiki/Helium" title="Helium">He</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Lithium" title="Lithium">Li</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Beryllium" title="Beryllium">Be</a> </td> <td colspan="24">  </td> <td style="background-color:#cccc99"><a href="/wiki/Boron" title="Boron">B</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Carbon" title="Carbon">C</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Nitrogen" title="Nitrogen">N</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Oxygen" title="Oxygen">O</a> </td> <td style="background-color:#ffff99"><a href="/wiki/Fluorine" title="Fluorine">F</a> </td> <td style="background-color:#c0ffff"><a href="/wiki/Neon" title="Neon">Ne</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Sodium" title="Sodium">Na</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Magnesium" title="Magnesium">Mg</a> </td> <td colspan="24">  </td> <td style="background-color:#cccccc"><a href="/wiki/Aluminium" title="Aluminium">Al</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Silicon" title="Silicon">Si</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Phosphorus" title="Phosphorus">P</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Sulfur" title="Sulfur">S</a> </td> <td style="background-color:#ffff99"><a href="/wiki/Chlorine" title="Chlorine">Cl</a> </td> <td style="background-color:#c0ffff"><a href="/wiki/Argon" title="Argon">Ar</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Potassium" title="Potassium">K</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Calcium" title="Calcium">Ca</a> </td> <td colspan="14">  </td> <td style="background-color:#ffc0c0"><a href="/wiki/Scandium" title="Scandium">Sc</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Titanium" title="Titanium">Ti</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Vanadium" title="Vanadium">V</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Chromium" title="Chromium">Cr</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Manganese" title="Manganese">Mn</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Iron" title="Iron">Fe</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Cobalt" title="Cobalt">Co</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Nickel" title="Nickel">Ni</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Copper" title="Copper">Cu</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Zinc" title="Zinc">Zn</a> </td> <td style="background-color:#cccccc"><a href="/wiki/Gallium" title="Gallium">Ga</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Germanium" title="Germanium">Ge</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Arsenic" title="Arsenic">As</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Selenium" title="Selenium">Se</a> </td> <td style="background-color:#ffff99"><a href="/wiki/Bromine" title="Bromine">Br</a> </td> <td style="background-color:#c0ffff"><a href="/wiki/Krypton" title="Krypton">Kr</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Rubidium" title="Rubidium">Rb</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Strontium" title="Strontium">Sr</a> </td> <td colspan="14">  </td> <td style="background-color:#ffc0c0"><a href="/wiki/Yttrium" title="Yttrium">Y</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Zirconium" title="Zirconium">Zr</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Niobium" title="Niobium">Nb</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Molybdenum" title="Molybdenum">Mo</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Technetium" title="Technetium">Tc</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Ruthenium" title="Ruthenium">Ru</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Rhodium" title="Rhodium">Rh</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Palladium" title="Palladium">Pd</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Silver" title="Silver">Ag</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Cadmium" title="Cadmium">Cd</a> </td> <td style="background-color:#cccccc"><a href="/wiki/Indium" title="Indium">In</a> </td> <td style="background-color:#cccccc"><a href="/wiki/Tin" title="Tin">Sn</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Antimony" title="Antimony">Sb</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Tellurium" title="Tellurium">Te</a> </td> <td style="background-color:#ffff99"><a href="/wiki/Iodine" title="Iodine">I</a> </td> <td style="background-color:#c0ffff"><a href="/wiki/Xenon" title="Xenon">Xe</a> </td></tr> <tr> <td width="3.125%" style="background-color:#ff6666"><a href="/wiki/Caesium" title="Caesium">Cs</a> </td> <td width="3.125%" style="background-color:#ffdead"><a href="/wiki/Barium" title="Barium">Ba</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Lanthanum" title="Lanthanum">La</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Cerium" title="Cerium">Ce</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Praseodymium" title="Praseodymium">Pr</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Neodymium" title="Neodymium">Nd</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Promethium" title="Promethium">Pm</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Samarium" title="Samarium">Sm</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Europium" title="Europium">Eu</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Terbium" title="Terbium">Tb</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Dysprosium" title="Dysprosium">Dy</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Holmium" title="Holmium">Ho</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Erbium" title="Erbium">Er</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Thulium" title="Thulium">Tm</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Ytterbium" title="Ytterbium">Yb</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Lutetium" title="Lutetium">Lu</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Hafnium" title="Hafnium">Hf</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Tantalum" title="Tantalum">Ta</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Tungsten" title="Tungsten">W</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Rhenium" title="Rhenium">Re</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Osmium" title="Osmium">Os</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Iridium" title="Iridium">Ir</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Platinum" title="Platinum">Pt</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Gold" title="Gold">Au</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a> </td> <td width="3.125%" style="background-color:#cccccc"><a href="/wiki/Thallium" title="Thallium">Tl</a> </td> <td width="3.125%" style="background-color:#cccccc"><a href="/wiki/Lead" title="Lead">Pb</a> </td> <td width="3.125%" style="background-color:#cccccc"><a href="/wiki/Bismuth" title="Bismuth">Bi</a> </td> <td width="3.125%" style="background-color:#cccccc"><a href="/wiki/Polonium" title="Polonium">Po</a> </td> <td width="3.125%" style="background-color:#ffff99"><a href="/wiki/Astatine" title="Astatine">At</a> </td> <td width="3.125%" style="background-color:#c0ffff"><a href="/wiki/Radon" title="Radon">Rn</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Francium" title="Francium">Fr</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Radium" title="Radium">Ra</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Actinium" title="Actinium">Ac</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Thorium" title="Thorium">Th</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Protactinium" title="Protactinium">Pa</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Uranium" title="Uranium">U</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Neptunium" title="Neptunium">Np</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Plutonium" title="Plutonium">Pu</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Americium" title="Americium">Am</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Curium" title="Curium">Cm</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Berkelium" title="Berkelium">Bk</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Californium" title="Californium">Cf</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Einsteinium" title="Einsteinium">Es</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Fermium" title="Fermium">Fm</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Mendelevium" title="Mendelevium">Md</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Nobelium" title="Nobelium">No</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Lawrencium" title="Lawrencium">Lr</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Rutherfordium" title="Rutherfordium">Rf</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Dubnium" title="Dubnium">Db</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Seaborgium" title="Seaborgium">Sg</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Bohrium" title="Bohrium">Bh</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Hassium" title="Hassium">Hs</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Meitnerium" title="Meitnerium">Mt</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Darmstadtium" title="Darmstadtium">Ds</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Roentgenium" title="Roentgenium">Rg</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Copernicium" title="Copernicium">Cn</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Nihonium" title="Nihonium">Nh</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Flerovium" title="Flerovium">Fl</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Moscovium" title="Moscovium">Mc</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Livermorium" title="Livermorium">Lv</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Tennessine" title="Tennessine">Ts</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Oganesson" title="Oganesson">Og</a> </td></tr> <tr> <td colspan="32"> <table border="1" align="center" style="border:1px solid #ffffff; border-collapse:collapse; font-size: smaller; width:100%" rules="all" cellpadding="1"> <tbody><tr> <td style="background-color:#ff6666" width="10%"><a href="/wiki/Alkali_metal" title="Alkali metal">Alkali metals</a> </td> <td style="background-color:#ffdead" width="10%"><a href="/wiki/Alkaline_earth_metal" title="Alkaline earth metal">Alkaline earth metals</a> </td> <td style="background-color:#ffbfff" width="10%"><a href="/wiki/Lanthanide" title="Lanthanide">Lanthanides</a> </td> <td style="background-color:#ff99cc" width="10%"><a href="/wiki/Actinide" title="Actinide">Actinides</a> </td> <td style="background-color:#ffc0c0" width="10%"><a href="/wiki/Transition_metal" title="Transition metal">Transition metals</a> </td> <td style="background-color:#cccccc" width="10%"><a href="/wiki/Post-transition_metal" title="Post-transition metal">Poor metals</a> </td> <td style="background-color:#cccc99" width="10%"><a href="/wiki/Metalloid" title="Metalloid">Metalloids</a> </td> <td style="background-color:#a0ffa0" width="10%">Other <a href="/wiki/Nonmetal" title="Nonmetal">nonmetals</a> </td> <td style="background-color:#ffff99" width="10%"><a href="/wiki/Halogen" title="Halogen">Halogens</a> </td> <td style="background-color:#c0ffff" width="10%"><a href="/wiki/Noble_gas" title="Noble gas">Noble gases</a> 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