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Available in 15 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-15" 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">15 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 mw-list-item"><a href="https://af.wikipedia.org/wiki/Isotope_van_mendelevium" title="Isotope van mendelevium – Afrikaans" lang="af" hreflang="af" data-title="Isotope van mendelevium" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Is%C3%B2tops_del_mendelevi" title="Isòtops del mendelevi – Catalan" lang="ca" hreflang="ca" data-title="Isòtops del mendelevi" 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%9C%D0%B5%D0%BD%D0%B4%D0%B5%D0%BB%D0%B5%D0%B2%D0%B8_%D0%B8%D0%B7%D0%BE%D1%82%D0%BE%D0%BF%C4%95%D1%81%D0%B5%D0%BC" title="Менделеви изотопĕсем – Chuvash" lang="cv" hreflang="cv" data-title="Менделеви изотопĕсем" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Izotopy_mendelevia" title="Izotopy mendelevia – Czech" lang="cs" hreflang="cs" data-title="Izotopy mendelevia" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Anexo:Is%C3%B3topos_de_mendelevio" title="Anexo:Isótopos de mendelevio – Spanish" lang="es" hreflang="es" data-title="Anexo:Isótopos de mendelevio" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A7%DB%8C%D8%B2%D9%88%D8%AA%D9%88%D9%BE%E2%80%8C%D9%87%D8%A7%DB%8C_%D9%85%D9%86%D8%AF%D9%84%DB%8C%D9%81%DB%8C%D9%85" title="ایزوتوپ‌های مندلیفیم – Persian" lang="fa" hreflang="fa" data-title="ایزوتوپ‌های مندلیفیم" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Isotopes_du_mend%C3%A9l%C3%A9vium" title="Isotopes du mendélévium – French" lang="fr" hreflang="fr" data-title="Isotopes du mendélévium" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%A9%98%EB%8D%B8%EB%A0%88%EB%B8%80_%EB%8F%99%EC%9C%84_%EC%9B%90%EC%86%8C" title="멘델레븀 동위 원소 – Korean" lang="ko" hreflang="ko" data-title="멘델레븀 동위 원소" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Isotop_mendelevium" title="Isotop mendelevium – Indonesian" lang="id" hreflang="id" data-title="Isotop mendelevium" 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-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/A_mendel%C3%A9vium_izot%C3%B3pjai" title="A mendelévium izotópjai – Hungarian" lang="hu" hreflang="hu" data-title="A mendelévium izotópjai" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Isotopen_van_mendelevium" title="Isotopen van mendelevium – Dutch" lang="nl" hreflang="nl" data-title="Isotopen van mendelevium" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%A1%E3%83%B3%E3%83%87%E3%83%AC%E3%83%93%E3%82%A6%E3%83%A0%E3%81%AE%E5%90%8C%E4%BD%8D%E4%BD%93" 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.infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><caption class="infobox-title"><span class="nowrap"><a href="/wiki/Isotope" title="Isotope">Isotopes</a> of <a href="/wiki/Mendelevium" title="Mendelevium">mendelevium</a> <style data-mw-deduplicate="TemplateStyles:r886047488">.mw-parser-output .nobold{font-weight:normal}</style><span class="nobold">(<sub>101</sub>Md)</span></span></caption><tbody><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<sup id="cite_ref-NUBASE2020_1-0" class="reference"><a href="#cite_note-NUBASE2020-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </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" title="Half-life">half-life</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488"><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="2" style="vertical-align: top;"><sup>256</sup>Md </th> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: center;"><a href="/wiki/Synthetic_radioisotope" title="Synthetic radioisotope">synth</a> </td> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: right;"><span class="nowrap"><span data-sort-value="7003466200000000000♠"></span>77.7 min</span> </td> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;"><a href="/wiki/Electron_capture" title="Electron capture">ε</a></span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Fermium-256" class="mw-redirect" title="Fermium-256"><sup>256</sup>Fm</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;"><a href="/wiki/Alpha_decay" title="Alpha decay">α</a></span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Einsteinium-252" class="mw-redirect" title="Einsteinium-252"><sup>252</sup>Es</a> </td></tr> <tr> <th rowspan="3" style="vertical-align: top;"><sup>257</sup>Md </th> <td rowspan="3" colspan="1" style="vertical-align: top; text-align: center;">synth </td> <td rowspan="3" colspan="1" style="vertical-align: top; text-align: right;"><span class="nowrap"><span data-sort-value="7004198720000000000♠"></span>5.52 h</span> </td> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;">ε</span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Fermium-257" class="mw-redirect" title="Fermium-257"><sup>257</sup>Fm</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;"><a href="/wiki/Alpha_decay" title="Alpha decay">α</a></span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Einsteinium-253" class="mw-redirect" title="Einsteinium-253"><sup>253</sup>Es</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;"><a href="/wiki/Spontaneous_fission" title="Spontaneous fission">SF</a></span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><sup></sup>– </td></tr> <tr> <th rowspan="3" style="vertical-align: top;"><sup>258</sup>Md </th> <td rowspan="3" colspan="1" style="vertical-align: top; text-align: center;">synth </td> <td rowspan="3" colspan="1" style="vertical-align: top; text-align: right;"><span class="nowrap"><span data-sort-value="7006444960000000000♠"></span>51.5 d</span> </td> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;">α</span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Einsteinium-254" class="mw-redirect" title="Einsteinium-254"><sup>254</sup>Es</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;">ε</span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Fermium-258" class="mw-redirect" title="Fermium-258"><sup>258</sup>Fm</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;"><a href="/wiki/Beta_minus_decay" class="mw-redirect" title="Beta minus decay">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/Nobelium-258" class="mw-redirect" title="Nobelium-258"><sup>258</sup>No</a> </td></tr> <tr> <th rowspan="2" style="vertical-align: top;"><sup>259</sup>Md </th> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: center;">synth </td> <td rowspan="2" colspan="1" style="vertical-align: top; text-align: right;"><span class="nowrap"><span data-sort-value="7003576000000000000♠"></span>1.60 h</span> </td> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;">SF</span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><sup></sup>– </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;">α</span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Einsteinium-255" class="mw-redirect" title="Einsteinium-255"><sup>255</sup>Es</a> </td></tr> <tr> <th rowspan="4" style="vertical-align: top;"><sup>260</sup>Md </th> <td rowspan="4" colspan="1" style="vertical-align: top; text-align: center;">synth </td> <td rowspan="4" colspan="1" style="vertical-align: top; text-align: right;"><span class="nowrap"><span data-sort-value="7006274752000000000♠"></span>31.8 d</span> </td> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;">SF</span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><sup></sup>– </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;">α</span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Einsteinium-256" class="mw-redirect" title="Einsteinium-256"><sup>256</sup>Es</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;">ε</span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Fermium-260" class="mw-redirect" title="Fermium-260"><sup>260</sup>Fm</a> </td></tr> <tr> <td style="text-align: left; vertical-align: top;"><span style="float: left; font-size: 115%; padding: 0;">β<sup>−</sup></span><span style="float: right; padding-left: 0.2em;"></span> </td> <td style="text-align: right; vertical-align: middle;"><a href="/wiki/Nobelium-260" class="mw-redirect" title="Nobelium-260"><sup>260</sup>No</a> </td></tr></tbody></table></td></tr><tr><td colspan="2" class="infobox-below noprint" style="background: #e8e8e8;"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist 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dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1239400231">.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}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist"><ul><li class="nv-view"><a href="/wiki/Template:Infobox_mendelevium_isotopes" title="Template:Infobox mendelevium isotopes"><span title="View this template">view</span></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Infobox_mendelevium_isotopes" class="mw-redirect" title="Template talk:Infobox mendelevium isotopes"><span title="Discuss this template">talk</span></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Infobox_mendelevium_isotopes" title="Special:EditPage/Template:Infobox mendelevium isotopes"><span title="Edit this template">edit</span></a></li></ul></div></td></tr></tbody></table> <p><a href="/wiki/Mendelevium" title="Mendelevium">Mendelevium</a> (<sub>101</sub>Md) is a <a href="/wiki/Synthetic_element" title="Synthetic element">synthetic element</a>, and thus a <a href="/wiki/Standard_atomic_weight" title="Standard atomic weight">standard atomic weight</a> cannot be given. Like all artificial elements, it has no <a href="/wiki/Stable_isotope" class="mw-redirect" title="Stable isotope">stable isotopes</a>. The first <a href="/wiki/Isotope" title="Isotope">isotope</a> to be synthesized was <sup>256</sup>Md (which was also the first isotope of any element produced one <a href="/wiki/Atom" title="Atom">atom</a> at a time) in 1955. There are 17 known <a href="/wiki/Radioisotope" class="mw-redirect" title="Radioisotope">radioisotopes</a>, ranging in <a href="/wiki/Atomic_mass" title="Atomic mass">atomic mass</a> from <sup>244</sup>Md to <sup>260</sup>Md, and 5 <a href="/wiki/Nuclear_isomer" title="Nuclear isomer">isomers</a>. The longest-lived isotope is <sup>258</sup>Md with a <a href="/wiki/Half-life" title="Half-life">half-life</a> of 51.3 days, and the longest-lived isomer is <sup>258m</sup>Md with a half-life of 57 minutes. </p> <div class="mw-heading mw-heading2"><h2 id="List_of_isotopes">List of isotopes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isotopes_of_mendelevium&action=edit&section=1" title="Edit section: List of isotopes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><span class="anchor" id="Mendelevium-256m"></span><span class="anchor" id="Mendelevium-261"></span><span class="anchor" id="Mendelevium-262"></span> </p><p><br /> </p> <table class="wikitable sortable" style="font-size: 85%; white-space: nowrap"> <tbody><tr style="vertical-align: top"> <th rowspan="2">Nuclide<br /><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>n 1<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="1"><a href="/wiki/Atomic_number" title="Atomic number"><i>Z</i></a> </th> <th rowspan="1"><a href="/wiki/Neutron_number" title="Neutron number"><i>N</i></a> </th> <th rowspan="1"><a href="/wiki/Atomic_mass" title="Atomic mass">Isotopic mass</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488"><span class="nobold">(<a href="/wiki/Dalton_(unit)" title="Dalton (unit)">Da</a>)</span><sup id="cite_ref-AME2020_II_3-0" class="reference"><a href="#cite_note-AME2020_II-3"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><br /><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>n 2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-TMS_5-0" class="reference"><a href="#cite_note-TMS-5"><span class="cite-bracket">[</span>n 3<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2"><a href="/wiki/Half-life" title="Half-life">Half-life</a><sup id="cite_ref-NUBASE2020_1-1" class="reference"><a href="#cite_note-NUBASE2020-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><br /> </th> <th rowspan="2"><a href="/wiki/Decay_mode" class="mw-redirect" title="Decay mode">Decay<br />mode</a><sup id="cite_ref-NUBASE2020_1-2" class="reference"><a href="#cite_note-NUBASE2020-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><br /><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>n 4<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2"><a href="/wiki/Decay_product" title="Decay product">Daughter<br />isotope</a><br /> </th> <th rowspan="2"><a href="/wiki/Spin_(particle_physics)" class="mw-redirect" title="Spin (particle physics)">Spin</a> and<br /><a href="/wiki/Parity_(physics)#Nuclei" title="Parity (physics)">parity</a><sup id="cite_ref-NUBASE2020_1-3" class="reference"><a href="#cite_note-NUBASE2020-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><br /><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>n 5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-TNN_8-0" class="reference"><a href="#cite_note-TNN-8"><span class="cite-bracket">[</span>n 6<span class="cite-bracket">]</span></a></sup> </th></tr> <tr> <th colspan="3">Excitation energy<sup id="cite_ref-TNN_8-1" class="reference"><a href="#cite_note-TNN-8"><span class="cite-bracket">[</span>n 6<span class="cite-bracket">]</span></a></sup> </th></tr> <tr> <td rowspan="2"><sup>244</sup>Md<sup id="cite_ref-244md_10-0" class="reference"><a href="#cite_note-244md-10"><span class="cite-bracket">[</span>n 7<span class="cite-bracket">]</span></a></sup> </td> <td rowspan="2" style="text-align:right">101 </td> <td rowspan="2" style="text-align:right">143 </td> <td rowspan="2">244.08116(40)# </td> <td rowspan="2">0.36(14) s </td> <td><a href="/wiki/Alpha_decay" title="Alpha decay">α</a> </td> <td><sup>240</sup>Es </td> <td rowspan="2">3+# </td></tr> <tr> <td><a href="/wiki/Beta_decay" title="Beta decay">β<sup>+</sup></a>, <a href="/wiki/Spontaneous_fission" title="Spontaneous fission">SF</a> (<14%) </td> <td>(various) </td></tr> <tr id="Mendelevium-244m"> <td style="text-indent:1em"><sup>244m</sup>Md<sup id="cite_ref-244md_10-1" class="reference"><a href="#cite_note-244md-10"><span class="cite-bracket">[</span>n 7<span class="cite-bracket">]</span></a></sup> </td> <td colspan="3" style="text-indent:2em">200(150)# keV </td> <td>~9 μs </td> <td>IT </td> <td><sup>244</sup>Md </td> <td>7+# </td></tr> <tr id="Mendelevium-245"> <td><sup>245</sup>Md </td> <td style="text-align:right">101 </td> <td style="text-align:right">144 </td> <td>245.08086(28)# </td> <td>0.38(10) s </td> <td>α </td> <td><sup>241</sup>Es </td> <td>(7/2−) </td></tr> <tr id="Mendelevium-245m"> <td style="text-indent:1em"><sup>245m</sup>Md<sup id="cite_ref-order_11-0" class="reference"><a href="#cite_note-order-11"><span class="cite-bracket">[</span>n 8<span class="cite-bracket">]</span></a></sup> </td> <td colspan="3" style="text-indent:2em">100(100)# keV </td> <td>0.90(25) ms </td> <td>SF </td> <td>(various) </td> <td>1/2−# </td></tr> <tr id="Mendelevium-246"> <td><sup>246</sup>Md </td> <td style="text-align:right">101 </td> <td style="text-align:right">145 </td> <td>246.08171(28)# </td> <td>0.92(18) s </td> <td>α </td> <td><sup>242</sup>Es </td> <td>1−# </td></tr> <tr id="Mendelevium-246m"> <td rowspan="3" style="text-indent:1em"><sup>246m</sup>Md<sup id="cite_ref-order_11-1" class="reference"><a href="#cite_note-order-11"><span class="cite-bracket">[</span>n 8<span class="cite-bracket">]</span></a></sup> </td> <td rowspan="3" colspan="3" style="text-indent:2em">60(60) keV </td> <td rowspan="3">4.4(8) s </td> <td>β<sup>+</sup> (~67%) </td> <td><sup>246</sup>Fm </td> <td rowspan="3">4−# </td></tr> <tr> <td>α (<23%) </td> <td><sup>242</sup>Es </td></tr> <tr> <td>β<sup>+</sup>, SF (>10%) </td> <td>(various) </td></tr> <tr> <td rowspan="2"><sup>247</sup>Md<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </td> <td rowspan="2" style="text-align:right">101 </td> <td rowspan="2" style="text-align:right">146 </td> <td rowspan="2">247.08152(22)# </td> <td rowspan="2">1.20(12) s </td> <td>α (99.14%) </td> <td><sup>243</sup>Es </td> <td rowspan="2">(7/2−) </td></tr> <tr> <td>SF (0.86%) </td> <td>(various) </td></tr> <tr id="Mendelevium-247m"> <td rowspan="2" style="text-indent:1em"><sup>247m</sup>Md </td> <td rowspan="2" colspan="3" style="text-indent:2em">153 keV </td> <td rowspan="2">0.23(3) s </td> <td>α (80%) </td> <td><sup>243</sup>Es </td> <td rowspan="2">(1/2−) </td></tr> <tr> <td>SF (20%) </td> <td>(various) </td></tr> <tr> <td rowspan="3"><sup>248</sup>Md </td> <td rowspan="3" style="text-align:right">101 </td> <td rowspan="3" style="text-align:right">147 </td> <td rowspan="3">248.08261(20)# </td> <td rowspan="3">7(3) s </td> <td>β<sup>+</sup> (80%) </td> <td><sup>248</sup>Fm </td> <td rowspan="3"> </td></tr> <tr> <td>α (20%) </td> <td><sup>244</sup>Es </td></tr> <tr> <td>β<sup>+</sup>, SF (<0.05%) </td> <td>(various) </td></tr> <tr> <td rowspan="2"><sup>249</sup>Md </td> <td rowspan="2" style="text-align:right">101 </td> <td rowspan="2" style="text-align:right">148 </td> <td rowspan="2">249.08286(18) </td> <td rowspan="2">25.6(9) s </td> <td>α (75%) </td> <td><sup>245</sup>Es </td> <td rowspan="2">(7/2−) </td></tr> <tr> <td>β<sup>+</sup> (25%) </td> <td><sup>249</sup>Fm </td></tr> <tr id="Mendelevium-249m"> <td style="text-indent:1em"><sup>249m</sup>Md<sup id="cite_ref-order_11-2" class="reference"><a href="#cite_note-order-11"><span class="cite-bracket">[</span>n 8<span class="cite-bracket">]</span></a></sup> </td> <td colspan="3" style="text-indent:2em">100(100)# keV </td> <td>1.9(9) s </td> <td>α </td> <td><sup>245</sup>Es </td> <td>(1/2−) </td></tr> <tr> <td rowspan="3"><sup>250</sup>Md </td> <td rowspan="3" style="text-align:right">101 </td> <td rowspan="3" style="text-align:right">149 </td> <td rowspan="3">250.084165(98) </td> <td rowspan="3">54(4) s </td> <td>β<sup>+</sup> (93.0%) </td> <td><sup>250</sup>Fm </td> <td rowspan="3">2−# </td></tr> <tr> <td>α (7.0%) </td> <td><sup>246</sup>Es </td></tr> <tr> <td>β<sup>+</sup>, SF (0.026%) </td> <td>(various) </td></tr> <tr id="Mendelevium-250m"> <td style="text-indent:1em"><sup>250m</sup>Md </td> <td colspan="3" style="text-indent:2em">120(40) keV </td> <td>42.4(45) s </td> <td>α </td> <td><sup>246</sup>Es </td> <td>7+# </td></tr> <tr> <td rowspan="2"><sup>251</sup>Md </td> <td rowspan="2" style="text-align:right">101 </td> <td rowspan="2" style="text-align:right">150 </td> <td rowspan="2">251.084774(20) </td> <td rowspan="2">4.21(23) min </td> <td>β<sup>+</sup> (90%) </td> <td><sup>251</sup>Fm </td> <td rowspan="2">(7/2−) </td></tr> <tr> <td>α (10%) </td> <td><sup>247</sup>Es </td></tr> <tr id="Mendelevium-251m"> <td style="text-indent:1em"><sup>251m</sup>Md </td> <td colspan="3" style="text-indent:2em">53(8) keV </td> <td>20# s </td> <td> </td> <td> </td> <td>(1/2−) </td></tr> <tr id="Mendelevium-252"> <td><sup>252</sup>Md </td> <td style="text-align:right">101 </td> <td style="text-align:right">151 </td> <td>252.086385(98) </td> <td>2.3(8) min </td> <td>β<sup>+</sup> </td> <td><sup>252</sup>Fm </td> <td>1+# </td></tr> <tr> <td rowspan="2"><sup>253</sup>Md </td> <td rowspan="2" style="text-align:right">101 </td> <td rowspan="2" style="text-align:right">152 </td> <td rowspan="2">253.087143(34)# </td> <td rowspan="2">12(8) min </td> <td>β<sup>+</sup> (~99.3%) </td> <td><sup>253</sup>Fm </td> <td rowspan="2">(7/2−) </td></tr> <tr> <td>α (~0.7%) </td> <td><sup>249</sup>Es </td></tr> <tr id="Mendelevium-253m"> <td style="text-indent:1em"><sup>253m</sup>Md </td> <td colspan="3" style="text-indent:2em">60(30) keV </td> <td>1# min </td> <td> </td> <td> </td> <td>(1/2−) </td></tr> <tr id="Mendelevium-254"> <td><sup>254</sup>Md </td> <td style="text-align:right">101 </td> <td style="text-align:right">153 </td> <td>254.08959(11)# </td> <td>10(3) min </td> <td>β<sup>+</sup> </td> <td><sup>254</sup>Fm </td> <td>0−# </td></tr> <tr id="Mendelevium-254m"> <td style="text-indent:1em"><sup>254m</sup>Md<sup id="cite_ref-order_11-3" class="reference"><a href="#cite_note-order-11"><span class="cite-bracket">[</span>n 8<span class="cite-bracket">]</span></a></sup> </td> <td colspan="3" style="text-indent:2em">50(100)# keV </td> <td>28(8) min </td> <td>β<sup>+</sup> </td> <td><sup>254</sup>Fm </td> <td>3−# </td></tr> <tr> <td rowspan="2"><sup>255</sup>Md </td> <td rowspan="2" style="text-align:right">101 </td> <td rowspan="2" style="text-align:right">154 </td> <td rowspan="2">255.0910817(60) </td> <td rowspan="2">27(2) min </td> <td>β<sup>+</sup> (93%) </td> <td><sup>255</sup>Fm </td> <td rowspan="2">7/2− </td></tr> <tr> <td>α (7%) </td> <td><sup>251</sup>Es </td></tr> <tr> <td rowspan="3"><sup>256</sup>Md </td> <td rowspan="3" style="text-align:right">101 </td> <td rowspan="3" style="text-align:right">155 </td> <td rowspan="3">256.09389(13)# </td> <td rowspan="3">77.7(18) min </td> <td>β<sup>+</sup> (90.8%) </td> <td><sup>256</sup>Fm </td> <td rowspan="3">(1−) </td></tr> <tr> <td>α (9.2%) </td> <td><sup>252</sup>Es </td></tr> <tr> <td>SF (<3%) </td> <td>(various) </td></tr> <tr> <td rowspan="2"><sup>257</sup>Md </td> <td rowspan="2" style="text-align:right">101 </td> <td rowspan="2" style="text-align:right">156 </td> <td rowspan="2">257.0955373(17) </td> <td rowspan="2">5.52(5) h </td> <td><a href="/wiki/Electron_capture" title="Electron capture">EC</a> (85%) </td> <td><sup>257</sup>Fm </td> <td rowspan="2">(7/2−) </td></tr> <tr> <td>α (15%) </td> <td><sup>253</sup>Es </td></tr> <tr> <td rowspan="3"><sup>258</sup>Md </td> <td rowspan="3" style="text-align:right">101 </td> <td rowspan="3" style="text-align:right">157 </td> <td rowspan="3">258.0984336(37) </td> <td rowspan="3">51.59(29) d </td> <td>α </td> <td><sup>254</sup>Es </td> <td rowspan="3">(8−)# </td></tr> <tr> <td>β<sup>−</sup> (<0.0015%) </td> <td><sup>258</sup>No </td></tr> <tr> <td>β<sup>+</sup> (<0.0015%) </td> <td><sup>258</sup>Fm </td></tr> <tr id="Mendelevium-258m"> <td rowspan="3" style="text-indent:1em"><sup>258m</sup>Md<sup id="cite_ref-order_11-4" class="reference"><a href="#cite_note-order-11"><span class="cite-bracket">[</span>n 8<span class="cite-bracket">]</span></a></sup> </td> <td rowspan="3" colspan="3" style="text-indent:2em">0(200)# keV </td> <td rowspan="3">57.0(9) min </td> <td>EC (85%) </td> <td><sup>258</sup>Fm </td> <td rowspan="3">1−# </td></tr> <tr> <td>SF (<15%) </td> <td>(various) </td></tr> <tr> <td>α (<1.2%) </td> <td><sup>254</sup>Es </td></tr> <tr id="Mendelevium-259"> <td><sup>259</sup>Md<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>n 9<span class="cite-bracket">]</span></a></sup> </td> <td style="text-align:right">101 </td> <td style="text-align:right">158 </td> <td>259.10045(11)# </td> <td>1.60(6) h </td> <td>SF </td> <td>(various) </td> <td>7/2−# </td></tr> <tr> <td rowspan="4"><sup>260</sup>Md </td> <td rowspan="4" style="text-align:right">101 </td> <td rowspan="4" style="text-align:right">159 </td> <td rowspan="4">260.10365(34)# </td> <td rowspan="4">27.8(8) d </td> <td>SF </td> <td>(various) </td> <td rowspan="4"> </td></tr> <tr> <td>α (<5%) </td> <td><sup>256</sup>Es </td></tr> <tr> <td>EC (<5%) </td> <td><sup>260</sup>Fm </td></tr> <tr> <td>β<sup>−</sup> (<3.5%) </td> <td><sup>260</sup>No </td></tr> <tr> <th colspan="20" style="text-align:right; line-height:85%;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488"><span class="nobold"><i>This table header & footer:</i> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist"><ul><li class="nv-view"><a href="/wiki/Template:Isotopes_table" title="Template:Isotopes table"><span title="View this template">view</span></a></li></ul></div></span> </th></tr></tbody></table> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><sup>m</sup>Md –  Excited <a href="/wiki/Nuclear_isomer" title="Nuclear isomer">nuclear isomer</a>.</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text">( ) –  Uncertainty (1<i>σ</i>) is given in concise form in parentheses after the corresponding last digits.</span> </li> <li id="cite_note-TMS-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-TMS_5-0">^</a></b></span> <span class="reference-text"># –  Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).</span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"> Modes of decay: <table style="margin-left:1.5em;"> <tbody><tr style="line-height: 1.1em; vertical-align: top"> <td>EC:</td> <td><a href="/wiki/Electron_capture" title="Electron capture">Electron capture</a> </td></tr> <tr style="line-height: 1.1em; vertical-align: top"> <td>SF:</td> <td><a href="/wiki/Spontaneous_fission" title="Spontaneous fission">Spontaneous fission</a> </td></tr></tbody></table></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text">( ) spin value –  Indicates spin with weak assignment arguments.</span> </li> <li id="cite_note-TNN-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-TNN_8-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-TNN_8-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"># –  Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).</span> </li> <li id="cite_note-244md-10"><span class="mw-cite-backlink">^ <a href="#cite_ref-244md_10-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-244md_10-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Discovery of this isotope is disputed due to conflicting data.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></span> </li> <li id="cite_note-order-11"><span class="mw-cite-backlink">^ <a href="#cite_ref-order_11-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-order_11-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-order_11-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-order_11-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-order_11-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text">Order of ground state and isomer is uncertain.</span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text">Not directly synthesized, occurs as decay product of <sup>259</sup>No</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Chronology_of_isotope_discovery">Chronology of isotope discovery</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Isotopes_of_mendelevium&action=edit&section=2" title="Edit section: Chronology of isotope discovery"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr> <th>Isotope</th> <th>Discovered</th> <th>Reaction </th></tr> <tr id="Mendelevium-244"> <td><sup>244</sup>Md</td> <td>2020</td> <td><sup>209</sup>Bi(<sup>40</sup>Ar,5n) </td></tr> <tr> <td><sup>245</sup>Md</td> <td>1996</td> <td><sup>209</sup>Bi(<sup>40</sup>Ar,4n) </td></tr> <tr> <td><sup>246</sup>Md</td> <td>1996</td> <td><sup>209</sup>Bi(<sup>40</sup>Ar,3n) </td></tr> <tr id="Mendelevium-247"> <td><sup>247</sup>Md</td> <td>1981</td> <td><sup>209</sup>Bi(<sup>40</sup>Ar,2n) </td></tr> <tr id="Mendelevium-248"> <td><sup>248</sup>Md</td> <td>1973</td> <td><sup>241</sup>Am(<sup>12</sup>C,5n) </td></tr> <tr id="Mendelevium-249"> <td><sup>249</sup>Md</td> <td>1973</td> <td><sup>241</sup>Am(<sup>12</sup>C,4n) </td></tr> <tr id="Mendelevium-250"> <td><sup>250</sup>Md</td> <td>1973</td> <td><sup>243</sup>Am(<sup>12</sup>C,5n), <sup>243</sup>Am(<sup>13</sup>C,6n) </td></tr> <tr id="Mendelevium-251"> <td><sup>251</sup>Md</td> <td>1973</td> <td><sup>243</sup>Am(<sup>12</sup>C,4n), <sup>243</sup>Am(<sup>13</sup>C,5n) </td></tr> <tr> <td><sup>252</sup>Md</td> <td>1973</td> <td><sup>243</sup>Am(<sup>13</sup>C,4n) </td></tr> <tr id="Mendelevium-253"> <td><sup>253</sup>Md</td> <td>1992</td> <td><sup>243</sup>Am(<sup>13</sup>C,3n) </td></tr> <tr> <td><sup>254</sup>Md</td> <td>1970</td> <td><sup>253</sup>Es(α,3n) </td></tr> <tr id="Mendelevium-255"> <td><sup>255</sup>Md</td> <td>1958</td> <td><sup>253</sup>Es(α,2n) </td></tr> <tr id="Mendelevium-256"> <td><sup>256</sup>Md</td> <td>1955</td> <td><sup>253</sup>Es(α,n) </td></tr> <tr id="Mendelevium-257"> <td><sup>257</sup>Md</td> <td>1964</td> <td><sup>252</sup>Cf(<sup>11</sup>B,α2n) </td></tr> <tr id="Mendelevium-258"> <td><sup>258</sup>Md</td> <td>1970</td> <td><sup>255</sup>Es(α,n) </td></tr> <tr> <td><sup>259</sup>Md</td> <td>1982</td> <td><sup>248</sup>Cm(<sup>18</sup>O,α3n)<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </td></tr> <tr id="Mendelevium-260"> <td><sup>260</sup>Md</td> <td>1989</td> <td><sup>254</sup>Es+<sup>18</sup>O, <sup>22</sup>Ne — transfer </td></tr></tbody></table> <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=Isotopes_of_mendelevium&action=edit&section=3" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.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"><ol class="references"> <li id="cite_note-NUBASE2020-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-NUBASE2020_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-NUBASE2020_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-NUBASE2020_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-NUBASE2020_1-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.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 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Tables, graphs and references*". <i>Chinese Physics C</i>. <b>45</b> (3): 030003. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1088%2F1674-1137%2Fabddaf">10.1088/1674-1137/abddaf</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Chinese+Physics+C&rft.atitle=The+AME+2020+atomic+mass+evaluation+%28II%29.+Tables%2C+graphs+and+references%2A&rft.volume=45&rft.issue=3&rft.pages=030003&rft.date=2021&rft_id=info%3Adoi%2F10.1088%2F1674-1137%2Fabddaf&rft.aulast=Wang&rft.aufirst=Meng&rft.au=Huang%2C+W.J.&rft.au=Kondev%2C+F.G.&rft.au=Audi%2C+G.&rft.au=Naimi%2C+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIsotopes+of+mendelevium" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHeßbergerBlockDüllmannYakushev2021" class="citation journal cs1">Heßberger, F. P.; Block, M.; Düllmann, Ch. E.; Yakushev, A.; Leino, M.; Uusitalo, J. (3 May 2021). "Some Remarks on the Discovery of Md 244". <i>Physical Review Letters</i>. <b>126</b> (18). <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/2101.06076">2101.06076</a></span>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1103%2FPhysRevLett.126.182501">10.1103/PhysRevLett.126.182501</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Physical+Review+Letters&rft.atitle=Some+Remarks+on+the+Discovery+of+Md+244&rft.volume=126&rft.issue=18&rft.date=2021-05-03&rft_id=info%3Aarxiv%2F2101.06076&rft_id=info%3Adoi%2F10.1103%2FPhysRevLett.126.182501&rft.aulast=He%C3%9Fberger&rft.aufirst=F.%E2%80%89P.&rft.au=Block%2C+M.&rft.au=D%C3%BCllmann%2C+Ch.%E2%80%89E.&rft.au=Yakushev%2C+A.&rft.au=Leino%2C+M.&rft.au=Uusitalo%2C+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIsotopes+of+mendelevium" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHeßbergerAntalicGiacoppoAndel2022" class="citation journal cs1">Heßberger, F. P.; Antalic, S.; Giacoppo, F.; Andel, B.; Ackermann, D.; Block, M.; Heinz, S.; Khuyagbaatar, J.; Kojouharov, I.; Venhart, M. (25 January 2022). <a rel="nofollow" class="external text" href="https://doi.org/10.1140%2Fepja%2Fs10050-022-00663-4">"Alpha-gamma decay studies of <sup>247</sup>Md"</a>. <i>The European Physical Journal A</i>. <b>58</b> (1): 11. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2022EPJA...58...11H">2022EPJA...58...11H</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1140%2Fepja%2Fs10050-022-00663-4">10.1140/epja/s10050-022-00663-4</a></span>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1434-601X">1434-601X</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:246281669">246281669</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+European+Physical+Journal+A&rft.atitle=Alpha-gamma+decay+studies+of+%3Csup%3E247%3C%2Fsup%3EMd&rft.volume=58&rft.issue=1&rft.pages=11&rft.date=2022-01-25&rft_id=info%3Adoi%2F10.1140%2Fepja%2Fs10050-022-00663-4&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A246281669%23id-name%3DS2CID&rft.issn=1434-601X&rft_id=info%3Abibcode%2F2022EPJA...58...11H&rft.aulast=He%C3%9Fberger&rft.aufirst=F.+P.&rft.au=Antalic%2C+S.&rft.au=Giacoppo%2C+F.&rft.au=Andel%2C+B.&rft.au=Ackermann%2C+D.&rft.au=Block%2C+M.&rft.au=Heinz%2C+S.&rft.au=Khuyagbaatar%2C+J.&rft.au=Kojouharov%2C+I.&rft.au=Venhart%2C+M.&rft_id=https%3A%2F%2Fdoi.org%2F10.1140%252Fepja%252Fs10050-022-00663-4&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIsotopes+of+mendelevium" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text">see <a href="/wiki/Nobelium" title="Nobelium">nobelium</a></span> </li> </ol></div></div> <ul><li>Isotope masses from: <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFM._WangG._AudiA._H._WapstraF._G._Kondev2012" class="citation journal cs1">M. Wang; G. Audi; A. H. Wapstra; F. G. Kondev; M. MacCormick; X. Xu; et al. (2012). <a rel="nofollow" class="external text" href="http://amdc.in2p3.fr/masstables/Ame2012/Ame2012b-v2.pdf">"The AME2012 atomic mass evaluation (II). Tables, graphs and references"</a> <span class="cs1-format">(PDF)</span>. <i>Chinese Physics C</i>. <b>36</b> (12): 1603–2014. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2012ChPhC..36....3M">2012ChPhC..36....3M</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1088%2F1674-1137%2F36%2F12%2F003">10.1088/1674-1137/36/12/003</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:250839471">250839471</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Chinese+Physics+C&rft.atitle=The+AME2012+atomic+mass+evaluation+%28II%29.+Tables%2C+graphs+and+references.&rft.volume=36&rft.issue=12&rft.pages=1603-2014&rft.date=2012&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A250839471%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1088%2F1674-1137%2F36%2F12%2F003&rft_id=info%3Abibcode%2F2012ChPhC..36....3M&rft.au=M.+Wang&rft.au=G.+Audi&rft.au=A.+H.+Wapstra&rft.au=F.+G.+Kondev&rft.au=M.+MacCormick&rft.au=X.+Xu&rft_id=http%3A%2F%2Famdc.in2p3.fr%2Fmasstables%2FAme2012%2FAme2012b-v2.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIsotopes+of+mendelevium" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAudiBersillonBlachotWapstra2003" class="citation cs2">Audi, Georges; Bersillon, Olivier; Blachot, Jean; <a href="/wiki/Aaldert_Wapstra" title="Aaldert Wapstra">Wapstra, Aaldert Hendrik</a> (2003), <a rel="nofollow" class="external text" href="https://hal.archives-ouvertes.fr/in2p3-00020241/document">"The N<small>UBASE</small> evaluation of nuclear and decay properties"</a>, <i>Nuclear Physics A</i>, <b>729</b>: 3–128, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2003NuPhA.729....3A">2003NuPhA.729....3A</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.nuclphysa.2003.11.001">10.1016/j.nuclphysa.2003.11.001</a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nuclear+Physics+A&rft.atitle=The+N%3Csmall%3EUBASE%3C%2Fsmall%3E+evaluation+of+nuclear+and+decay+properties&rft.volume=729&rft.pages=3-128&rft.date=2003&rft_id=info%3Adoi%2F10.1016%2Fj.nuclphysa.2003.11.001&rft_id=info%3Abibcode%2F2003NuPhA.729....3A&rft.aulast=Audi&rft.aufirst=Georges&rft.au=Bersillon%2C+Olivier&rft.au=Blachot%2C+Jean&rft.au=Wapstra%2C+Aaldert+Hendrik&rft_id=https%3A%2F%2Fhal.archives-ouvertes.fr%2Fin2p3-00020241%2Fdocument&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIsotopes+of+mendelevium" class="Z3988"></span></li></ul></li> <li>Half-life, spin, and isomer data selected from the following sources. <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAudiBersillonBlachotWapstra2003" class="citation cs2">Audi, Georges; Bersillon, Olivier; Blachot, Jean; <a href="/wiki/Aaldert_Wapstra" title="Aaldert Wapstra">Wapstra, Aaldert Hendrik</a> (2003), <a rel="nofollow" class="external text" href="https://hal.archives-ouvertes.fr/in2p3-00020241/document">"The N<small>UBASE</small> evaluation of nuclear and decay properties"</a>, <i>Nuclear Physics A</i>, <b>729</b>: 3–128, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2003NuPhA.729....3A">2003NuPhA.729....3A</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.nuclphysa.2003.11.001">10.1016/j.nuclphysa.2003.11.001</a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nuclear+Physics+A&rft.atitle=The+N%3Csmall%3EUBASE%3C%2Fsmall%3E+evaluation+of+nuclear+and+decay+properties&rft.volume=729&rft.pages=3-128&rft.date=2003&rft_id=info%3Adoi%2F10.1016%2Fj.nuclphysa.2003.11.001&rft_id=info%3Abibcode%2F2003NuPhA.729....3A&rft.aulast=Audi&rft.aufirst=Georges&rft.au=Bersillon%2C+Olivier&rft.au=Blachot%2C+Jean&rft.au=Wapstra%2C+Aaldert+Hendrik&rft_id=https%3A%2F%2Fhal.archives-ouvertes.fr%2Fin2p3-00020241%2Fdocument&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIsotopes+of+mendelevium" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNational_Nuclear_Data_Center" class="citation web cs1"><a href="/wiki/National_Nuclear_Data_Center" title="National Nuclear Data Center">National Nuclear Data Center</a>. <a rel="nofollow" class="external text" href="http://www.nndc.bnl.gov/nudat2/">"NuDat 2.x database"</a>. <a href="/wiki/Brookhaven_National_Laboratory" title="Brookhaven National Laboratory">Brookhaven National Laboratory</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=NuDat+2.x+database&rft.pub=Brookhaven+National+Laboratory&rft.au=National+Nuclear+Data+Center&rft_id=http%3A%2F%2Fwww.nndc.bnl.gov%2Fnudat2%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIsotopes+of+mendelevium" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHolden2004" class="citation book cs1">Holden, Norman E. (2004). "11. Table of the Isotopes". In Lide, David R. (ed.). <i><a href="/wiki/CRC_Handbook_of_Chemistry_and_Physics" title="CRC Handbook of Chemistry and Physics">CRC Handbook of Chemistry and Physics</a></i> (85th ed.). <a href="/wiki/Boca_Raton,_Florida" title="Boca Raton, Florida">Boca Raton, Florida</a>: <a href="/wiki/CRC_Press" title="CRC Press">CRC Press</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8493-0485-9" title="Special:BookSources/978-0-8493-0485-9"><bdi>978-0-8493-0485-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=11.+Table+of+the+Isotopes&rft.btitle=CRC+Handbook+of+Chemistry+and+Physics&rft.place=Boca+Raton%2C+Florida&rft.edition=85th&rft.pub=CRC+Press&rft.date=2004&rft.isbn=978-0-8493-0485-9&rft.aulast=Holden&rft.aufirst=Norman+E.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIsotopes+of+mendelevium" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFM._Thoennessen2012" class="citation journal cs1">M. Thoennessen (2012). "Discovery of Isotopes of Elements with Z≥100". <i>Atomic Data and Nuclear Data Tables</i>. <b>99</b> (3): 312–344. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/1203.2105">1203.2105</a></span>. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2013ADNDT..99..312T">2013ADNDT..99..312T</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.adt.2012.03.003">10.1016/j.adt.2012.03.003</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:94982856">94982856</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Atomic+Data+and+Nuclear+Data+Tables&rft.atitle=Discovery+of+Isotopes+of+Elements+with+Z%E2%89%A5100&rft.volume=99&rft.issue=3&rft.pages=312-344&rft.date=2012&rft_id=info%3Aarxiv%2F1203.2105&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A94982856%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1016%2Fj.adt.2012.03.003&rft_id=info%3Abibcode%2F2013ADNDT..99..312T&rft.au=M.+Thoennessen&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIsotopes+of+mendelevium" class="Z3988"></span></li></ul></li></ul> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em 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.navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Isotopes_of_the_chemical_elements" style="padding:3px"><table class="nowraplinks mw-collapsible expanded navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Navbox_element_isotopes" title="Template:Navbox element isotopes"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Navbox_element_isotopes" title="Template talk:Navbox element isotopes"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Navbox_element_isotopes" title="Special:EditPage/Template:Navbox element isotopes"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Isotopes_of_the_chemical_elements" style="font-size:114%;margin:0 4em"><a href="/wiki/Isotope" title="Isotope">Isotopes</a> of the <a href="/wiki/Chemical_element" title="Chemical element">chemical elements</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;line-height:110%;"><div style="padding:0 0.25em"> <table style="border-spacing:1px;display:block;overflow:auto;width:100%;margin:0 !important"> <tbody><tr style="line-height:125%; vertical-align:top;"> <th style="text-align:right; width:3%; background:transparent"><small><a href="/wiki/Group_(periodic_table)" title="Group (periodic table)">Group</a></small> </th> <th style="background:#e8e8e8; width:5%"><a href="/wiki/Alkali_metal" title="Alkali metal">1</a> </th> <th style="background:#f0f0f0; width:5%"><a href="/wiki/Alkaline_earth_metal" title="Alkaline earth metal">2</a> </th> <td style="width:2%">  </td> <th style="background:#e8e8e8; width:5%"><a href="/wiki/Group_3_element" title="Group 3 element">3</a> </th> <th style="background:#f0f0f0; width:5%"><a href="/wiki/Group_4_element" title="Group 4 element">4</a> </th> <th style="background:#e8e8e8; width:5%"><a href="/wiki/Group_5_element" title="Group 5 element">5</a> </th> <th style="background:#f0f0f0; width:5%"><a href="/wiki/Group_6_element" title="Group 6 element">6</a> </th> <th style="background:#e8e8e8; width:5%"><a href="/wiki/Group_7_element" title="Group 7 element">7</a> </th> <th style="background:#f0f0f0; width:5%"><a href="/wiki/Group_8_element" title="Group 8 element">8</a> </th> <th style="background:#e8e8e8; width:5%"><a href="/wiki/Group_9_element" title="Group 9 element">9</a> </th> <th style="background:#f0f0f0; width:5%"><a href="/wiki/Group_10_element" title="Group 10 element">10</a> </th> <th style="background:#e8e8e8; width:5%"><a href="/wiki/Group_11_element" title="Group 11 element">11</a> </th> <th style="background:#f0f0f0; width:5%"><a href="/wiki/Group_12_element" title="Group 12 element">12</a> </th> <th style="background:#e8e8e8; width:5%"><a href="/wiki/Boron_group" title="Boron group">13</a> </th> <th style="background:#f0f0f0; width:5%"><a href="/wiki/Carbon_group" title="Carbon group">14</a> </th> <th style="background:#e8e8e8; width:5%"><a href="/wiki/Pnictogen" title="Pnictogen">15</a> </th> <th style="background:#f0f0f0; width:5%"><a href="/wiki/Chalcogen" title="Chalcogen">16</a> </th> <th style="background:#e8e8e8; width:5%"><a href="/wiki/Halogen" title="Halogen">17</a> </th> <th style="background:#f0f0f0; width:5%"><a href="/wiki/Noble_gas" title="Noble gas">18</a> </th></tr> <tr style="font-size:85%; line-height:125%; vertical-align:top;"> <th style="text-align:left; vertical-align:bottom; background:transparent"><small><a href="/wiki/Period_(periodic_table)" title="Period (periodic table)">Period</a></small> </th> <td style="background:#e8e8e8;">Hydrogen and<br />alkali metals </td> <td style="background:#f0f0f0;">Alkaline<br />earth metals </td> <td> </td> <td style="background:#e8e8e8;"> </td> <td style="background:#f0f0f0;"> </td> <td style="background:#e8e8e8;"> </td> <td style="background:#f0f0f0;"> </td> <td style="background:#e8e8e8;"> </td> <td style="background:#f0f0f0;"> </td> <td style="background:#e8e8e8;"> </td> <td style="background:#f0f0f0;"> </td> <td style="background:#e8e8e8;"> </td> <td style="background:#f0f0f0;"> </td> <td style="background:#e8e8e8;"> </td> <td style="background:#f0f0f0;"> </td> <td style="background:#e8e8e8;">Pnictogens </td> <td style="background:#f0f0f0;">Chalcogens </td> <td style="background:#e8e8e8;">Halogens </td> <td style="background:#f0f0f0;">Noble gases </td></tr> <tr> <th style="background:transparent"><span title="Period ①" class="nounderlines" style="font-size:150%;"><a href="/wiki/Period_1_element" title="Period 1 element">①</a></span> </th> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_hydrogen" title="Isotopes of hydrogen">Isotopes</a>  <a href="/wiki/Isotopes_of_hydrogen#List_of_isotopes" title="Isotopes of hydrogen">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Hydrogen" title="Hydrogen">H</a></b></div>1 </td> <td colspan="17"> </td> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_helium" title="Isotopes of helium">Isotopes</a>  <a href="/wiki/Isotopes_of_helium#List_of_isotopes" title="Isotopes of helium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Helium" title="Helium">He</a></b></div>2 </td></tr> <tr> <th style="background:transparent"><span title="Period ②" class="nounderlines" style="font-size:150%;"><a href="/wiki/Period_2_element" title="Period 2 element">②</a></span> </th> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_lithium" title="Isotopes of lithium">Isotopes</a>  <a href="/wiki/Isotopes_of_lithium#List_of_isotopes" title="Isotopes of lithium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Lithium" title="Lithium">Li</a></b></div>3 </td> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_beryllium" title="Isotopes of beryllium">Isotopes</a>  <a href="/wiki/Isotopes_of_beryllium#List_of_isotopes" title="Isotopes of beryllium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Beryllium" title="Beryllium">Be</a></b></div>4 </td> <td colspan="11"> </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_boron" title="Isotopes of boron">Isotopes</a>  <a href="/wiki/Isotopes_of_boron#List_of_isotopes" title="Isotopes of boron">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Boron" title="Boron">B</a></b></div>5 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_carbon" title="Isotopes of carbon">Isotopes</a>  <a href="/wiki/Isotopes_of_carbon#List_of_isotopes" title="Isotopes of carbon">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Carbon" title="Carbon">C</a></b></div>6 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_nitrogen" title="Isotopes of nitrogen">Isotopes</a>  <a href="/wiki/Isotopes_of_nitrogen#List_of_isotopes" title="Isotopes of nitrogen">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Nitrogen" title="Nitrogen">N</a></b></div>7 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_oxygen" title="Isotopes of oxygen">Isotopes</a>  <a href="/wiki/Isotopes_of_oxygen#List_of_isotopes" title="Isotopes of oxygen">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Oxygen" title="Oxygen">O</a></b></div>8 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_fluorine" title="Isotopes of fluorine">Isotopes</a>  <a href="/wiki/Isotopes_of_fluorine#List_of_isotopes" title="Isotopes of fluorine">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Fluorine" title="Fluorine">F</a></b></div>9 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_neon" title="Isotopes of neon">Isotopes</a>  <a href="/wiki/Isotopes_of_neon#List_of_isotopes" title="Isotopes of neon">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Neon" title="Neon">Ne</a></b></div>10 </td></tr> <tr> <th style="background:transparent"><span title="Period ③" class="nounderlines" style="font-size:150%;"><a href="/wiki/Period_3_element" title="Period 3 element">③</a></span> </th> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_sodium" title="Isotopes of sodium">Isotopes</a>  <a href="/wiki/Isotopes_of_sodium#List_of_isotopes" title="Isotopes of sodium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Sodium" title="Sodium">Na</a></b></div>11 </td> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_magnesium" title="Isotopes of magnesium">Isotopes</a>  <a href="/wiki/Isotopes_of_magnesium#List_of_isotopes" title="Isotopes of magnesium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Magnesium" title="Magnesium">Mg</a></b></div>12 </td> <td colspan="11"> </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_aluminium" title="Isotopes of aluminium">Isotopes</a>  <a href="/wiki/Isotopes_of_aluminium#List_of_isotopes" title="Isotopes of aluminium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Aluminium" title="Aluminium">Al</a></b></div>13 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_silicon" title="Isotopes of silicon">Isotopes</a>  <a href="/wiki/Isotopes_of_silicon#List_of_isotopes" title="Isotopes of silicon">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Silicon" title="Silicon">Si</a></b></div>14 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_phosphorus" title="Isotopes of phosphorus">Isotopes</a>  <a href="/wiki/Isotopes_of_phosphorus#List_of_isotopes" title="Isotopes of phosphorus">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Phosphorus" title="Phosphorus">P</a></b></div>15 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_sulfur" title="Isotopes of sulfur">Isotopes</a>  <a href="/wiki/Isotopes_of_sulfur#List_of_isotopes" title="Isotopes of sulfur">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Sulfur" title="Sulfur">S</a></b></div>16 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_chlorine" title="Isotopes of chlorine">Isotopes</a>  <a href="/wiki/Isotopes_of_chlorine#List_of_isotopes" title="Isotopes of chlorine">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Chlorine" title="Chlorine">Cl</a></b></div>17 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_argon" title="Isotopes of argon">Isotopes</a>  <a href="/wiki/Isotopes_of_argon#List_of_isotopes" title="Isotopes of argon">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Argon" title="Argon">Ar</a></b></div>18 </td></tr> <tr> <th style="background:transparent"><span title="Period ④" class="nounderlines" style="font-size:150%;"><a href="/wiki/Period_4_element" title="Period 4 element">④</a></span> </th> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_potassium" title="Isotopes of potassium">Isotopes</a>  <a href="/wiki/Isotopes_of_potassium#List_of_isotopes" title="Isotopes of potassium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Potassium" title="Potassium">K</a></b></div>19 </td> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_calcium" title="Isotopes of calcium">Isotopes</a>  <a href="/wiki/Isotopes_of_calcium#List_of_isotopes" title="Isotopes of calcium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Calcium" title="Calcium">Ca</a></b></div>20 </td> <td> </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_scandium" title="Isotopes of scandium">Isotopes</a>  <a href="/wiki/Isotopes_of_scandium#List_of_isotopes" title="Isotopes of scandium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Scandium" title="Scandium">Sc</a></b></div>21 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_titanium" title="Isotopes of titanium">Isotopes</a>  <a href="/wiki/Isotopes_of_titanium#List_of_isotopes" title="Isotopes of titanium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Titanium" title="Titanium">Ti</a></b></div>22 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_vanadium" title="Isotopes of vanadium">Isotopes</a>  <a href="/wiki/Isotopes_of_vanadium#List_of_isotopes" title="Isotopes of vanadium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Vanadium" title="Vanadium">V</a></b></div>23 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_chromium" title="Isotopes of chromium">Isotopes</a>  <a href="/wiki/Isotopes_of_chromium#List_of_isotopes" title="Isotopes of chromium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Chromium" title="Chromium">Cr</a></b></div>24 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_manganese" title="Isotopes of manganese">Isotopes</a>  <a href="/wiki/Isotopes_of_manganese#List_of_isotopes" title="Isotopes of manganese">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Manganese" title="Manganese">Mn</a></b></div>25 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_iron" title="Isotopes of iron">Isotopes</a>  <a href="/wiki/Isotopes_of_iron#List_of_isotopes" title="Isotopes of iron">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Iron" title="Iron">Fe</a></b></div>26 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_cobalt" title="Isotopes of cobalt">Isotopes</a>  <a href="/wiki/Isotopes_of_cobalt#List_of_isotopes" title="Isotopes of cobalt">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Cobalt" title="Cobalt">Co</a></b></div>27 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_nickel" title="Isotopes of nickel">Isotopes</a>  <a href="/wiki/Isotopes_of_nickel#List_of_isotopes" title="Isotopes of nickel">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Nickel" title="Nickel">Ni</a></b></div>28 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_copper" title="Isotopes of copper">Isotopes</a>  <a href="/wiki/Isotopes_of_copper#List_of_isotopes" title="Isotopes of copper">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Copper" title="Copper">Cu</a></b></div>29 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_zinc" title="Isotopes of zinc">Isotopes</a>  <a href="/wiki/Isotopes_of_zinc#List_of_isotopes" title="Isotopes of zinc">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Zinc" title="Zinc">Zn</a></b></div>30 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_gallium" title="Isotopes of gallium">Isotopes</a>  <a href="/wiki/Isotopes_of_gallium#List_of_isotopes" title="Isotopes of gallium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Gallium" title="Gallium">Ga</a></b></div>31 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_germanium" title="Isotopes of germanium">Isotopes</a>  <a href="/wiki/Isotopes_of_germanium#List_of_isotopes" title="Isotopes of germanium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Germanium" title="Germanium">Ge</a></b></div>32 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_arsenic" title="Isotopes of arsenic">Isotopes</a>  <a href="/wiki/Isotopes_of_arsenic#List_of_isotopes" title="Isotopes of arsenic">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Arsenic" title="Arsenic">As</a></b></div>33 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_selenium" title="Isotopes of selenium">Isotopes</a>  <a href="/wiki/Isotopes_of_selenium#List_of_isotopes" title="Isotopes of selenium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Selenium" title="Selenium">Se</a></b></div>34 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_bromine" title="Isotopes of bromine">Isotopes</a>  <a href="/wiki/Isotopes_of_bromine#List_of_isotopes" title="Isotopes of bromine">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Bromine" title="Bromine">Br</a></b></div>35 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_krypton" title="Isotopes of krypton">Isotopes</a>  <a href="/wiki/Isotopes_of_krypton#List_of_isotopes" title="Isotopes of krypton">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Krypton" title="Krypton">Kr</a></b></div>36 </td></tr> <tr> <th style="background:transparent"><span title="Period ⑤" class="nounderlines" style="font-size:150%;"><a href="/wiki/Period_5_element" title="Period 5 element">⑤</a></span> </th> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_rubidium" title="Isotopes of rubidium">Isotopes</a>  <a href="/wiki/Isotopes_of_rubidium#List_of_isotopes" title="Isotopes of rubidium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Rubidium" title="Rubidium">Rb</a></b></div>37 </td> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_strontium" title="Isotopes of strontium">Isotopes</a>  <a href="/wiki/Isotopes_of_strontium#List_of_isotopes" title="Isotopes of strontium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Strontium" title="Strontium">Sr</a></b></div>38 </td> <td> </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_yttrium" title="Isotopes of yttrium">Isotopes</a>  <a href="/wiki/Isotopes_of_yttrium#List_of_isotopes" title="Isotopes of yttrium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Yttrium" title="Yttrium">Y</a></b></div>39 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_zirconium" title="Isotopes of zirconium">Isotopes</a>  <a href="/wiki/Isotopes_of_zirconium#List_of_isotopes" title="Isotopes of zirconium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Zirconium" title="Zirconium">Zr</a></b></div>40 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_niobium" title="Isotopes of niobium">Isotopes</a>  <a href="/wiki/Isotopes_of_niobium#List_of_isotopes" title="Isotopes of niobium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Niobium" title="Niobium">Nb</a></b></div>41 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_molybdenum" title="Isotopes of molybdenum">Isotopes</a>  <a href="/wiki/Isotopes_of_molybdenum#List_of_isotopes" title="Isotopes of molybdenum">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Molybdenum" title="Molybdenum">Mo</a></b></div>42 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_technetium" title="Isotopes of technetium">Isotopes</a>  <a href="/wiki/Isotopes_of_technetium#List_of_isotopes" title="Isotopes of technetium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Technetium" title="Technetium">Tc</a></b></div>43 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_ruthenium" title="Isotopes of ruthenium">Isotopes</a>  <a href="/wiki/Isotopes_of_ruthenium#List_of_isotopes" title="Isotopes of ruthenium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Ruthenium" title="Ruthenium">Ru</a></b></div>44 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_rhodium" title="Isotopes of rhodium">Isotopes</a>  <a href="/wiki/Isotopes_of_rhodium#List_of_isotopes" title="Isotopes of rhodium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Rhodium" title="Rhodium">Rh</a></b></div>45 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_palladium" title="Isotopes of palladium">Isotopes</a>  <a href="/wiki/Isotopes_of_palladium#List_of_isotopes" title="Isotopes of palladium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Palladium" title="Palladium">Pd</a></b></div>46 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_silver" title="Isotopes of silver">Isotopes</a>  <a href="/wiki/Isotopes_of_silver#List_of_isotopes" title="Isotopes of silver">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Silver" title="Silver">Ag</a></b></div>47 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_cadmium" title="Isotopes of cadmium">Isotopes</a>  <a href="/wiki/Isotopes_of_cadmium#List_of_isotopes" title="Isotopes of cadmium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Cadmium" title="Cadmium">Cd</a></b></div>48 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_indium" title="Isotopes of indium">Isotopes</a>  <a href="/wiki/Isotopes_of_indium#List_of_isotopes" title="Isotopes of indium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Indium" title="Indium">In</a></b></div>49 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_tin" title="Isotopes of tin">Isotopes</a>  <a href="/wiki/Isotopes_of_tin#List_of_isotopes" title="Isotopes of tin">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Tin" title="Tin">Sn</a></b></div>50 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_antimony" title="Isotopes of antimony">Isotopes</a>  <a href="/wiki/Isotopes_of_antimony#List_of_isotopes" title="Isotopes of antimony">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Antimony" title="Antimony">Sb</a></b></div>51 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_tellurium" title="Isotopes of tellurium">Isotopes</a>  <a href="/wiki/Isotopes_of_tellurium#List_of_isotopes" title="Isotopes of tellurium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Tellurium" title="Tellurium">Te</a></b></div>52 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_iodine" title="Isotopes of iodine">Isotopes</a>  <a href="/wiki/Isotopes_of_iodine#List_of_isotopes" title="Isotopes of iodine">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Iodine" title="Iodine">I</a></b></div>53 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_xenon" title="Isotopes of xenon">Isotopes</a>  <a href="/wiki/Isotopes_of_xenon#List_of_isotopes" title="Isotopes of xenon">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Xenon" title="Xenon">Xe</a></b></div>54 </td></tr> <tr> <th style="background:transparent"><span title="Period ⑥" class="nounderlines" style="font-size:150%;"><a href="/wiki/Period_6_element" title="Period 6 element">⑥</a></span> </th> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_caesium" title="Isotopes of caesium">Isotopes</a>  <a href="/wiki/Isotopes_of_caesium#List_of_isotopes" title="Isotopes of caesium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Caesium" title="Caesium">Cs</a></b></div>55 </td> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_barium" title="Isotopes of barium">Isotopes</a>  <a href="/wiki/Isotopes_of_barium#List_of_isotopes" title="Isotopes of barium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Barium" title="Barium">Ba</a></b></div>56 </td> <td style="text-align:center; vertical-align:middle; background:#9bff99;"><span class="skin-invert-image" typeof="mw:File"><span><img alt="1 asterisk" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Asterisks_one.svg/16px-Asterisks_one.svg.png" decoding="async" width="16" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Asterisks_one.svg/24px-Asterisks_one.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/49/Asterisks_one.svg/32px-Asterisks_one.svg.png 2x" data-file-width="106" data-file-height="98" /></span></span> </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_lutetium" title="Isotopes of lutetium">Isotopes</a>  <a href="/wiki/Isotopes_of_lutetium#List_of_isotopes" title="Isotopes of lutetium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Lutetium" title="Lutetium">Lu</a></b></div>71 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_hafnium" title="Isotopes of hafnium">Isotopes</a>  <a href="/wiki/Isotopes_of_hafnium#List_of_isotopes" title="Isotopes of hafnium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Hafnium" title="Hafnium">Hf</a></b></div>72 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_tantalum" title="Isotopes of tantalum">Isotopes</a>  <a href="/wiki/Isotopes_of_tantalum#List_of_isotopes" title="Isotopes of tantalum">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Tantalum" title="Tantalum">Ta</a></b></div>73 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_tungsten" title="Isotopes of tungsten">Isotopes</a>  <a href="/wiki/Isotopes_of_tungsten#List_of_isotopes" title="Isotopes of tungsten">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Tungsten" title="Tungsten">W</a></b></div>74 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_rhenium" title="Isotopes of rhenium">Isotopes</a>  <a href="/wiki/Isotopes_of_rhenium#List_of_isotopes" title="Isotopes of rhenium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Rhenium" title="Rhenium">Re</a></b></div>75 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_osmium" title="Isotopes of osmium">Isotopes</a>  <a href="/wiki/Isotopes_of_osmium#List_of_isotopes" title="Isotopes of osmium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Osmium" title="Osmium">Os</a></b></div>76 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_iridium" title="Isotopes of iridium">Isotopes</a>  <a href="/wiki/Isotopes_of_iridium#List_of_isotopes" title="Isotopes of iridium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Iridium" title="Iridium">Ir</a></b></div>77 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_platinum" title="Isotopes of platinum">Isotopes</a>  <a href="/wiki/Isotopes_of_platinum#List_of_isotopes" title="Isotopes of platinum">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Platinum" title="Platinum">Pt</a></b></div>78 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_gold" title="Isotopes of gold">Isotopes</a>  <a href="/wiki/Isotopes_of_gold#List_of_isotopes" title="Isotopes of gold">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Gold" title="Gold">Au</a></b></div>79 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_mercury" title="Isotopes of mercury">Isotopes</a>  <a href="/wiki/Isotopes_of_mercury#List_of_isotopes" title="Isotopes of mercury">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a></b></div>80 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_thallium" title="Isotopes of thallium">Isotopes</a>  <a href="/wiki/Isotopes_of_thallium#List_of_isotopes" title="Isotopes of thallium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Thallium" title="Thallium">Tl</a></b></div>81 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_lead" title="Isotopes of lead">Isotopes</a>  <a href="/wiki/Isotopes_of_lead#List_of_isotopes" title="Isotopes of lead">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Lead" title="Lead">Pb</a></b></div>82 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_bismuth" title="Isotopes of bismuth">Isotopes</a>  <a href="/wiki/Isotopes_of_bismuth#List_of_isotopes" title="Isotopes of bismuth">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Bismuth" title="Bismuth">Bi</a></b></div>83 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_polonium" title="Isotopes of polonium">Isotopes</a>  <a href="/wiki/Isotopes_of_polonium#List_of_isotopes" title="Isotopes of polonium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Polonium" title="Polonium">Po</a></b></div>84 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_astatine" title="Isotopes of astatine">Isotopes</a>  <a href="/wiki/Isotopes_of_astatine#List_of_isotopes" title="Isotopes of astatine">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Astatine" title="Astatine">At</a></b></div>85 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_radon" title="Isotopes of radon">Isotopes</a>  <a href="/wiki/Isotopes_of_radon#List_of_isotopes" title="Isotopes of radon">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Radon" title="Radon">Rn</a></b></div>86 </td></tr> <tr> <th style="background:transparent"><span title="Period ⑦" class="nounderlines" style="font-size:150%;"><a href="/wiki/Period_7_element" title="Period 7 element">⑦</a></span> </th> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_francium" title="Isotopes of francium">Isotopes</a>  <a href="/wiki/Isotopes_of_francium#List_of_isotopes" title="Isotopes of francium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Francium" title="Francium">Fr</a></b></div>87 </td> <td style="padding-left:0.1em; background:#ff9999;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_radium" title="Isotopes of radium">Isotopes</a>  <a href="/wiki/Isotopes_of_radium#List_of_isotopes" title="Isotopes of radium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Radium" title="Radium">Ra</a></b></div>88 </td> <td style="text-align:center; vertical-align:middle; background:#9bff99;"><span class="skin-invert-image" typeof="mw:File"><span><img alt="1 asterisk" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Asterisks_2_%28vertical%29.svg/16px-Asterisks_2_%28vertical%29.svg.png" decoding="async" width="16" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Asterisks_2_%28vertical%29.svg/24px-Asterisks_2_%28vertical%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Asterisks_2_%28vertical%29.svg/32px-Asterisks_2_%28vertical%29.svg.png 2x" data-file-width="106" data-file-height="98" /></span></span> </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_lawrencium" title="Isotopes of lawrencium">Isotopes</a>  <a href="/wiki/Isotopes_of_lawrencium#List_of_isotopes" title="Isotopes of lawrencium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Lawrencium" title="Lawrencium">Lr</a></b></div>103 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_rutherfordium" title="Isotopes of rutherfordium">Isotopes</a>  <a href="/wiki/Isotopes_of_rutherfordium#List_of_isotopes" title="Isotopes of rutherfordium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Rutherfordium" title="Rutherfordium">Rf</a></b></div>104 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_dubnium" title="Isotopes of dubnium">Isotopes</a>  <a href="/wiki/Isotopes_of_dubnium#List_of_isotopes" title="Isotopes of dubnium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Dubnium" title="Dubnium">Db</a></b></div>105 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_seaborgium" title="Isotopes of seaborgium">Isotopes</a>  <a href="/wiki/Isotopes_of_seaborgium#List_of_isotopes" title="Isotopes of seaborgium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Seaborgium" title="Seaborgium">Sg</a></b></div>106 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_bohrium" title="Isotopes of bohrium">Isotopes</a>  <a href="/wiki/Isotopes_of_bohrium#List_of_isotopes" title="Isotopes of bohrium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Bohrium" title="Bohrium">Bh</a></b></div>107 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_hassium" title="Isotopes of hassium">Isotopes</a>  <a href="/wiki/Isotopes_of_hassium#List_of_isotopes" title="Isotopes of hassium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Hassium" title="Hassium">Hs</a></b></div>108 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_meitnerium" title="Isotopes of meitnerium">Isotopes</a>  <a href="/wiki/Isotopes_of_meitnerium#List_of_isotopes" title="Isotopes of meitnerium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Meitnerium" title="Meitnerium">Mt</a></b></div>109 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_darmstadtium" title="Isotopes of darmstadtium">Isotopes</a>  <a href="/wiki/Isotopes_of_darmstadtium#List_of_isotopes" title="Isotopes of darmstadtium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Darmstadtium" title="Darmstadtium">Ds</a></b></div>110 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_roentgenium" title="Isotopes of roentgenium">Isotopes</a>  <a href="/wiki/Isotopes_of_roentgenium#List_of_isotopes" title="Isotopes of roentgenium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Roentgenium" title="Roentgenium">Rg</a></b></div>111 </td> <td style="padding-left:0.1em; background:#99ccff;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_copernicium" title="Isotopes of copernicium">Isotopes</a>  <a href="/wiki/Isotopes_of_copernicium#List_of_isotopes" title="Isotopes of copernicium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Copernicium" title="Copernicium">Cn</a></b></div>112 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_nihonium" title="Isotopes of nihonium">Isotopes</a>  <a href="/wiki/Isotopes_of_nihonium#List_of_isotopes" title="Isotopes of nihonium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Nihonium" title="Nihonium">Nh</a></b></div>113 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_flerovium" title="Isotopes of flerovium">Isotopes</a>  <a href="/wiki/Isotopes_of_flerovium#List_of_isotopes" title="Isotopes of flerovium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Flerovium" title="Flerovium">Fl</a></b></div>114 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_moscovium" title="Isotopes of moscovium">Isotopes</a>  <a href="/wiki/Isotopes_of_moscovium#List_of_isotopes" title="Isotopes of moscovium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Moscovium" title="Moscovium">Mc</a></b></div>115 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_livermorium" title="Isotopes of livermorium">Isotopes</a>  <a href="/wiki/Isotopes_of_livermorium#List_of_isotopes" title="Isotopes of livermorium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Livermorium" title="Livermorium">Lv</a></b></div>116 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_tennessine" title="Isotopes of tennessine">Isotopes</a>  <a href="/wiki/Isotopes_of_tennessine#List_of_isotopes" title="Isotopes of tennessine">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Tennessine" title="Tennessine">Ts</a></b></div>117 </td> <td style="padding-left:0.1em; background:#fdff8c;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_oganesson" title="Isotopes of oganesson">Isotopes</a>  <a href="/wiki/Isotopes_of_oganesson#List_of_isotopes" title="Isotopes of oganesson">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Oganesson" title="Oganesson">Og</a></b></div>118 </td></tr> <tr> <th style="background:transparent"><span title="Period ⑧" class="nounderlines" style="font-size:150%;"><a href="/wiki/Period_8_element" class="mw-redirect" title="Period 8 element">⑧</a></span> </th> <td style="padding-left:0.1em; background:#eee;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_ununennium" title="Isotopes of ununennium">Isotopes</a>  <a href="/wiki/Isotopes_of_ununennium#List_of_isotopes" title="Isotopes of ununennium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Ununennium" title="Ununennium">Uue</a></b></div>119 </td> <td style="padding-left:0.1em; background:#eee;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_unbinilium" title="Isotopes of unbinilium">Isotopes</a>  <a href="/wiki/Isotopes_of_unbinilium#List_of_isotopes" title="Isotopes of unbinilium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Unbinilium" title="Unbinilium">Ubn</a></b></div>120 </td></tr> <tr> <td colspan="20" style="height:1.4em;"> </td></tr> <tr> <td> </td> <td> </td> <td> </td> <td style="text-align:center; vertical-align:middle;"><span class="skin-invert-image" typeof="mw:File"><span><img alt="1 asterisk" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Asterisks_one.svg/16px-Asterisks_one.svg.png" decoding="async" width="16" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Asterisks_one.svg/24px-Asterisks_one.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/49/Asterisks_one.svg/32px-Asterisks_one.svg.png 2x" data-file-width="106" data-file-height="98" /></span></span> </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_lanthanum" title="Isotopes of lanthanum">Isotopes</a>  <a href="/wiki/Isotopes_of_lanthanum#List_of_isotopes" title="Isotopes of lanthanum">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Lanthanum" title="Lanthanum">La</a></b></div>57 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_cerium" title="Isotopes of cerium">Isotopes</a>  <a href="/wiki/Isotopes_of_cerium#List_of_isotopes" title="Isotopes of cerium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Cerium" title="Cerium">Ce</a></b></div>58 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_praseodymium" title="Isotopes of praseodymium">Isotopes</a>  <a href="/wiki/Isotopes_of_praseodymium#List_of_isotopes" title="Isotopes of praseodymium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Praseodymium" title="Praseodymium">Pr</a></b></div>59 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_neodymium" title="Isotopes of neodymium">Isotopes</a>  <a href="/wiki/Isotopes_of_neodymium#List_of_isotopes" title="Isotopes of neodymium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Neodymium" title="Neodymium">Nd</a></b></div>60 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_promethium" title="Isotopes of promethium">Isotopes</a>  <a href="/wiki/Isotopes_of_promethium#List_of_isotopes" title="Isotopes of promethium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Promethium" title="Promethium">Pm</a></b></div>61 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_samarium" title="Isotopes of samarium">Isotopes</a>  <a href="/wiki/Isotopes_of_samarium#List_of_isotopes" title="Isotopes of samarium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Samarium" title="Samarium">Sm</a></b></div>62 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_europium" title="Isotopes of europium">Isotopes</a>  <a href="/wiki/Isotopes_of_europium#List_of_isotopes" title="Isotopes of europium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Europium" title="Europium">Eu</a></b></div>63 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_gadolinium" title="Isotopes of gadolinium">Isotopes</a>  <a href="/wiki/Isotopes_of_gadolinium#List_of_isotopes" title="Isotopes of gadolinium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Gadolinium" title="Gadolinium">Gd</a></b></div>64 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_terbium" title="Isotopes of terbium">Isotopes</a>  <a href="/wiki/Isotopes_of_terbium#List_of_isotopes" title="Isotopes of terbium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Terbium" title="Terbium">Tb</a></b></div>65 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_dysprosium" title="Isotopes of dysprosium">Isotopes</a>  <a href="/wiki/Isotopes_of_dysprosium#List_of_isotopes" title="Isotopes of dysprosium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Dysprosium" title="Dysprosium">Dy</a></b></div>66 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_holmium" title="Isotopes of holmium">Isotopes</a>  <a href="/wiki/Isotopes_of_holmium#List_of_isotopes" title="Isotopes of holmium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Holmium" title="Holmium">Ho</a></b></div>67 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_erbium" title="Isotopes of erbium">Isotopes</a>  <a href="/wiki/Isotopes_of_erbium#List_of_isotopes" title="Isotopes of erbium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Erbium" title="Erbium">Er</a></b></div>68 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_thulium" title="Isotopes of thulium">Isotopes</a>  <a href="/wiki/Isotopes_of_thulium#List_of_isotopes" title="Isotopes of thulium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Thulium" title="Thulium">Tm</a></b></div>69 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_ytterbium" title="Isotopes of ytterbium">Isotopes</a>  <a href="/wiki/Isotopes_of_ytterbium#List_of_isotopes" title="Isotopes of ytterbium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Ytterbium" title="Ytterbium">Yb</a></b></div>70 </td> <td>  </td></tr> <tr> <td colspan="3"> </td> <td style="text-align:center; vertical-align:middle;"><span class="skin-invert-image" typeof="mw:File"><span><img alt="1 asterisk" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Asterisks_2_%28vertical%29.svg/16px-Asterisks_2_%28vertical%29.svg.png" decoding="async" width="16" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Asterisks_2_%28vertical%29.svg/24px-Asterisks_2_%28vertical%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Asterisks_2_%28vertical%29.svg/32px-Asterisks_2_%28vertical%29.svg.png 2x" data-file-width="106" data-file-height="98" /></span></span> </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_actinium" title="Isotopes of actinium">Isotopes</a>  <a href="/wiki/Isotopes_of_actinium#List_of_isotopes" title="Isotopes of actinium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Actinium" title="Actinium">Ac</a></b></div>89 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_thorium" title="Isotopes of thorium">Isotopes</a>  <a href="/wiki/Isotopes_of_thorium#List_of_isotopes" title="Isotopes of thorium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Thorium" title="Thorium">Th</a></b></div>90 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_protactinium" title="Isotopes of protactinium">Isotopes</a>  <a href="/wiki/Isotopes_of_protactinium#List_of_isotopes" title="Isotopes of protactinium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Protactinium" title="Protactinium">Pa</a></b></div>91 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_uranium" title="Isotopes of uranium">Isotopes</a>  <a href="/wiki/Isotopes_of_uranium#List_of_isotopes" title="Isotopes of uranium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Uranium" title="Uranium">U</a></b></div>92 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_neptunium" title="Isotopes of neptunium">Isotopes</a>  <a href="/wiki/Isotopes_of_neptunium#List_of_isotopes" title="Isotopes of neptunium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Neptunium" title="Neptunium">Np</a></b></div>93 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_plutonium" title="Isotopes of plutonium">Isotopes</a>  <a href="/wiki/Isotopes_of_plutonium#List_of_isotopes" title="Isotopes of plutonium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Plutonium" title="Plutonium">Pu</a></b></div>94 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_americium" title="Isotopes of americium">Isotopes</a>  <a href="/wiki/Isotopes_of_americium#List_of_isotopes" title="Isotopes of americium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Americium" title="Americium">Am</a></b></div>95 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_curium" title="Isotopes of curium">Isotopes</a>  <a href="/wiki/Isotopes_of_curium#List_of_isotopes" title="Isotopes of curium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Curium" title="Curium">Cm</a></b></div>96 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_berkelium" title="Isotopes of berkelium">Isotopes</a>  <a href="/wiki/Isotopes_of_berkelium#List_of_isotopes" title="Isotopes of berkelium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Berkelium" title="Berkelium">Bk</a></b></div>97 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_californium" title="Isotopes of californium">Isotopes</a>  <a href="/wiki/Isotopes_of_californium#List_of_isotopes" title="Isotopes of californium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Californium" title="Californium">Cf</a></b></div>98 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_einsteinium" title="Isotopes of einsteinium">Isotopes</a>  <a href="/wiki/Isotopes_of_einsteinium#List_of_isotopes" title="Isotopes of einsteinium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Einsteinium" title="Einsteinium">Es</a></b></div>99 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_fermium" title="Isotopes of fermium">Isotopes</a>  <a href="/wiki/Isotopes_of_fermium#List_of_isotopes" title="Isotopes of fermium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Fermium" title="Fermium">Fm</a></b></div>100 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a class="mw-selflink selflink">Isotopes</a>  <a class="mw-selflink-fragment" href="#List_of_isotopes">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Mendelevium" title="Mendelevium">Md</a></b></div>101 </td> <td style="padding-left:0.1em; background:#9bff99;"><div style="text-align:left"><small><a href="/wiki/Isotopes_of_nobelium" title="Isotopes of nobelium">Isotopes</a>  <a href="/wiki/Isotopes_of_nobelium#List_of_isotopes" title="Isotopes of nobelium">§ List</a></small></div><div style="display:block"><b><a href="/wiki/Nobelium" title="Nobelium">No</a></b></div>102 </td></tr></tbody></table> </div></td></tr><tr><td class="navbox-abovebelow hlist" colspan="2" style="background:#f0f0f0;"><div> <ul><li><a href="/wiki/Table_of_nuclides" title="Table of nuclides">Table of nuclides</a></li> <li>Categories: <a href="/wiki/Category:Isotopes" title="Category:Isotopes">Isotopes</a></li> <li><a href="/wiki/Category:Tables_of_nuclides" title="Category:Tables of nuclides">Tables of nuclides</a></li> <li><a href="/wiki/Category:Metastable_isotopes" title="Category:Metastable isotopes">Metastable isotopes</a></li> <li><a href="/wiki/Category:Lists_of_isotopes_by_element" title="Category:Lists of isotopes by element">Isotopes by element</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img 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