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<!DOCTYPE html> <html lang="en"> <head><meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Terbium | Tb</title> <link rel="shortcut icon" type="image/x-icon" href="/favicon.ico"> <link rel="apple-touch-icon" type="image/png" href="/jmol/apple-touch-icon.png"> <link rel="icon" type="image/png" href="/jmol/favicon-32x32.png"> <link rel="icon" type="image/png" href="/jmol/favicon-16x16.png"> <style> @font-face { font-family: "Roboto fallback"; src: local("Noto Sans"); size-adjust: 93.8205%; ascent-override: 98.884%; descent-override: 26.0221%; line-gap-override: 0%; } @font-face { font-family: "Roboto fallback"; src: local("Arial"); size-adjust: 100.1106%; ascent-override: 92.6709%; descent-override: 24.3871%; line-gap-override: 0%; } @font-face { font-family: "Roboto fallback"; src: local("Helvetica Neue"); size-adjust: 98.8578%; ascent-override: 93.8453%; descent-override: 24.6961%; line-gap-override: 0%; } @font-face { font-family: "Roboto 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data-v-7724c9dd>Accessed: </span><div id="header-mobile" class="mobile" data-v-7724c9dd><header data-v-7724c9dd><div class="first-line" data-v-7724c9dd><a href="/" class="" data-v-7724c9dd><img src="/_nuxt/ChemSpider_Mobile-Black_212x62px.d6f7832c.svg" alt="ChemSpider Search and share chemistry" id="rsc-mobile-header-title" width="256" data-v-7724c9dd></a><img src="/_nuxt/navIcon.10bd7823.svg" alt="nav-icon" loading="lazy" role="button" data-v-7724c9dd data-v-904515e6></div></header></div><div id="header-desktop" class="desktop" data-v-7724c9dd><header data-v-7724c9dd><div class="header-logo-image" data-v-7724c9dd><div class="logo" data-v-7724c9dd><a href="/" class="" data-v-7724c9dd><img src="/_nuxt/ChemSpider_Desktop-Black_247x72px.1dfe4f60.svg" alt="ChemSpider Search and share chemistry" id="rsc-header-title" width="235" height="72" style="margin-right:10px;" data-v-7724c9dd></a></div><a href="https://www.rsc.org/" data-v-7724c9dd><img src="/_nuxt/rsc-logo.34a4607b.webp" alt="Royal 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data-v-2dfcbb93>Terbium</h1></div></div><div class="item-image" tabindex="0" data-v-2dfcbb93><div id="div-svg" data-v-2dfcbb93></div></div><div class="info-buttons-mobile" data-v-2dfcbb93><button id="button-download-mobile" class="button darkblue-button button1" data-v-2dfcbb93>Download .mol <img class="download-icon" src="/_nuxt/download.18c2a6e1.svg" alt="download-icon" data-v-2dfcbb93></button><button id="button-cite-record-mobile" class="button darkblue-button button2" data-v-2dfcbb93><span data-v-2dfcbb93><a style="color:inherit;text-decoration:none;" data-v-2dfcbb93></a><img class="download-icon" src="/_nuxt/blankPage.8f22336f.svg" alt="download-icon" loading="lazy" data-v-2dfcbb93></span></button></div><div class="info-buttons-mobile" data-v-2dfcbb93><a href="https://legacy.chemspider.com/Chemical-Structure.22397.html" target="_blank" style="text-decoration:none;" class="button white-button button3" data-v-2dfcbb93><button id="button-download-mobile" style="color:#004976;" tabindex="-1" data-v-2dfcbb93>Go to legacy record </button></a></div><div class="item-info" data-v-2dfcbb93><div class="info-text" data-v-2dfcbb93><div class="compound-title" data-v-2dfcbb93></div><span class="report-error-mobile" data-v-2dfcbb93><button id="button-report-error-mobile" class="button white-button" data-v-2dfcbb93><img class="download-icon" src="/_nuxt/infoDarkBlue140.ea80f8c6.svg" loading="lazy" alt="download-icon" data-v-2dfcbb93></button></span><table class="" data-v-2dfcbb93><tr data-v-2dfcbb93><td class="header" id="molecular-fml-label" data-v-2dfcbb93>Molecular formula:</td><td class="molecular-formula" id="molecular-fml-value" style="user-select:text;" data-v-2dfcbb93><span id='molecular-formula-char'>T</span><span id='molecular-formula-char'>b</span></td></tr><tr data-v-2dfcbb93><td class="header" id="avg-mass-label" data-v-2dfcbb93>Average mass:</td><td class="average-mass" id="avg-mass-value" data-v-2dfcbb93>158.925</td></tr><tr data-v-2dfcbb93><td class="header" id="monoisotopic-mass-label" data-v-2dfcbb93>Monoisotopic mass:</td><td class="monoisotopic-mass" id="monoisotopic-mass-value" data-v-2dfcbb93>158.925347</td></tr><tr data-v-2dfcbb93><td class="header" id="cmp-id-label" data-v-2dfcbb93>ChemSpider ID:</td><td id="cmp-id-value" data-v-2dfcbb93>22397</td></tr></table><div class="icons-container" data-v-2dfcbb93><div class="icon" data-v-dfbcea86><img src="/_nuxt/search-wikipedia-icon.d29c987d.svg" alt="wikipedia-icon" style="width:25px;height:25px;" data-v-dfbcea86><p data-v-dfbcea86>Wikipedia</p></div><div class="icon" data-v-dfbcea86><img src="/_nuxt/search-spectra-icon.5940ca37.svg" alt="spectra-icon" style="width:25px;height:25px;" data-v-dfbcea86><p data-v-dfbcea86>Spectra</p></div></div></div><div class="info-buttons-desktop" data-v-2dfcbb93><button id="button-download" class="button darkblue-button" data-v-2dfcbb93> Download .mol <img class="download-icon" src="/_nuxt/download.18c2a6e1.svg" alt="download-icon" loading="lazy" data-v-2dfcbb93></button><button id="button-cite-record" class="button darkblue-button" data-v-2dfcbb93> Cite this record <img class="download-icon" src="/_nuxt/blankPage.8f22336f.svg" alt="download-icon" loading="lazy" data-v-2dfcbb93></button></div></div><span class="report-error" data-v-2dfcbb93><button id="button-report-error" class="button white-button button-report-error" data-v-2dfcbb93><img class="download-icon" src="/_nuxt/infoDarkBlue140.ea80f8c6.svg" alt="download-icon" loading="lazy" data-v-2dfcbb93></button></span></div></div><div class="notification-banner" data-v-2dfcbb93 data-v-b3a4af68><div class="text" id="banner-content" data-v-b3a4af68><span data-v-b3a4af68><img class="x-icon" src="/_nuxt/infoButton.f4d11efd.svg" alt="info-icon" loading="lazy" data-v-b3a4af68></span> </div></div><div id="top" data-v-2dfcbb93></div><div data-v-2dfcbb93 data-v-225c119e><div class="expansion-panels" id="accordion-structural-identifiers" tabindex="0" data-v-225c119e><div class="expansion-panel" data-v-225c119e><div class="expansion-panel-title" id="accordion-structural-identifiers-title" data-v-225c119e><div class="disabled-accordion-title title" data-v-225c119e><img class="plus-icon" src="/_nuxt/Plus.fed13eb2.svg" alt="plus-icon" loading="lazy" data-v-225c119e><img class="less-icon" src="/_nuxt/Less.4b527497.svg" alt="less-icon" loading="lazy" data-v-225c119e><span data-v-225c119e>Structural identifiers</span><div class="line" data-v-225c119e></div></div></div></div></div></div><div data-v-2dfcbb93><div class="item-options" data-v-5f7bceac><ul class="options-list" data-v-5f7bceac><li class="option-active option" id="tab0" tabindex="0" data-v-5f7bceac>Names <span data-v-5f7bceac><img src="/_nuxt/downArrow.e3348a8d.svg" alt="down_Arrow" loading="lazy" class="drop-down-icon" data-v-5f7bceac></span></li></ul></div><div class="selected-component" data-v-5f7bceac><section class="names" data-v-5f7bceac data-v-3ad33253><div class="accordion-margins" data-v-3ad33253><div id="Names-Accordion-0" data-v-3ad33253 data-v-225c119e><div class="expansion-panels" id="accordion-names-and-synonyms" tabindex="0" data-v-225c119e><div class="is-open expansion-panel" data-v-225c119e><div class="expansion-panel-title" id="accordion-names-and-synonyms-title" data-v-225c119e><div class="enabled-accordion-title title" data-v-225c119e><img class="plus-icon" src="/_nuxt/Plus.fed13eb2.svg" alt="plus-icon" loading="lazy" data-v-225c119e><img class="less-icon" src="/_nuxt/Less.4b527497.svg" alt="less-icon" loading="lazy" data-v-225c119e><span data-v-225c119e>Names and synonyms</span><div class="line" data-v-225c119e></div></div></div><div class="expansion-panel-text" data-v-225c119e><div class="names-and-synonyms" name="Names and synonyms" data-v-225c119e data-v-53d69be2><h5 id="verified-synonyms-label" data-v-53d69be2>Verified</h5><p class="result" id="verified-synonym-13598-54-4" data-row="2" data-v-53d69be2><p id="verified-synonym-13598-54-4" data-row="2" data-v-53d69be2>13598-54-4</p><span class="flag" data-v-53d69be2> [RN] </span></p><p class="result" id="verified-synonym-231-137-6" data-row="3" data-v-53d69be2><p id="verified-synonym-231-137-6" data-row="3" data-v-53d69be2>231-137-6</p><span class="flag" data-v-53d69be2> [EINECS] </span></p><p class="result" id="verified-synonym-7440-27-9" data-row="6" data-v-53d69be2><p id="verified-synonym-7440-27-9" data-row="6" data-v-53d69be2>7440-27-9</p><span class="flag" data-v-53d69be2> [RN] </span></p><p class="result" id="verified-synonym-mfcd00011256" data-row="9" data-v-53d69be2><p id="verified-synonym-mfcd00011256" data-row="9" data-v-53d69be2>MFCD00011256</p><span class="flag" data-v-53d69be2> [MDL number] </span></p><p class="result" id="verified-synonym-terbium" data-row="18" data-v-53d69be2><p id="verified-synonym-terbium" data-row="18" data-v-53d69be2>Terbium</p><span class="wiki-flag" data-v-53d69be2><a target="_blank" href="https://en.wikipedia.org/wiki/Terbium" id="verified-synonym-terbium-Wiki" data-row="18" data-v-53d69be2> [Wiki] <img src="/_nuxt/search-link.b5935a3d.svg" alt="link-icon" loading="lazy" id="verified-synonym-terbium-link-icon" data-row="18" data-v-53d69be2></a></span><span class="flag" data-v-53d69be2> [ACD/IUPAC Name] </span><span class="flag" data-v-53d69be2> [ACD/Index Name] </span></p><p class="result" id="verified-synonym-terbium" data-row="19" data-v-53d69be2><p id="verified-synonym-terbium" data-row="19" data-v-53d69be2>Terbium</p><span class="flag" data-v-53d69be2><p id="verified-synonym-terbium" data-v-53d69be2>[German]</p></span><span class="flag" data-v-53d69be2> [ACD/IUPAC Name] </span><span class="flag" data-v-53d69be2> [ACD/Index Name] </span></p><p class="result" id="verified-synonym-terbium" data-row="20" data-v-53d69be2><p id="verified-synonym-terbium" data-row="20" data-v-53d69be2>Terbium</p><span class="flag" data-v-53d69be2><p id="verified-synonym-terbium" data-v-53d69be2>[French]</p></span><span class="flag" data-v-53d69be2> [ACD/IUPAC Name] </span><span class="flag" data-v-53d69be2> [ACD/Index Name] </span></p><p class="result" id="verified-synonym-terbium-hydride-(tbh3)" data-row="27" data-v-53d69be2><p id="verified-synonym-terbium-hydride-(tbh3)" data-row="27" data-v-53d69be2>Terbium hydride (TbH3)</p></p><h5 id="unverified-synonyms-label" data-v-53d69be2>Unverified</h5><p class="result" id="unverified-synonym-110424-82-3" data-row="1" data-v-53d69be2><p id="unverified-synonym-110424-82-3" data-row="1" data-v-53d69be2>110424-82-3</p><span class="flag" data-v-53d69be2> [RN] </span></p><p class="result" id="unverified-synonym-65tb" data-row="5" data-v-53d69be2><p id="unverified-synonym-65tb" data-row="5" data-v-53d69be2>65Tb</p></p><p class="result" id="unverified-synonym-einecs-231-137-6" data-row="8" data-v-53d69be2><p id="unverified-synonym-einecs-231-137-6" data-row="8" data-v-53d69be2>EINECS 231-137-6</p></p><p class="result" id="unverified-synonym-terbio" data-row="17" data-v-53d69be2><p id="unverified-synonym-terbio" data-row="17" data-v-53d69be2>terbio</p></p><p class="result" id="unverified-synonym-terbium-atom" data-row="21" data-v-53d69be2><p id="unverified-synonym-terbium-atom" data-row="21" data-v-53d69be2>terbium atom</p></p><p class="result" id="unverified-synonym-terbium-chips" data-row="22" data-v-53d69be2><p id="unverified-synonym-terbium-chips" data-row="22" data-v-53d69be2>Terbium chips</p></p><p class="result" id="unverified-synonym-terbium-foil" data-row="23" data-v-53d69be2><p id="unverified-synonym-terbium-foil" data-row="23" data-v-53d69be2>Terbium foil</p></p><p class="result" id="unverified-synonym-terbium-foil,-0.1mm-(0.004in)-thick" data-row="24" data-v-53d69be2><p id="unverified-synonym-terbium-foil,-0.1mm-(0.004in)-thick" data-row="24" data-v-53d69be2>Terbium foil, 0.1mm (0.004in) thick</p></p><p class="result" id="unverified-synonym-terbium-foil,-0.25mm-(0.01in)-thick" data-row="25" data-v-53d69be2><p id="unverified-synonym-terbium-foil,-0.25mm-(0.01in)-thick" data-row="25" data-v-53d69be2>Terbium foil, 0.25mm (0.01in) thick</p></p><p class="result" id="unverified-synonym-terbium-foil,-0.62mm-(0.024in)-thick" data-row="26" data-v-53d69be2><p id="unverified-synonym-terbium-foil,-0.62mm-(0.024in)-thick" data-row="26" data-v-53d69be2>Terbium foil, 0.62mm (0.024in) thick</p></p><p class="result" id="unverified-synonym-terbium-ingot" data-row="28" data-v-53d69be2><p id="unverified-synonym-terbium-ingot" data-row="28" data-v-53d69be2>Terbium ingot</p></p><p class="result" id="unverified-synonym-terbium-nanofoil" data-row="29" data-v-53d69be2><p id="unverified-synonym-terbium-nanofoil" data-row="29" data-v-53d69be2>Terbium Nanofoil</p></p><p class="result" id="unverified-synonym-terbium-pieces" data-row="30" data-v-53d69be2><p id="unverified-synonym-terbium-pieces" data-row="30" data-v-53d69be2>Terbium pieces</p></p><p class="result" id="unverified-synonym-terbium-pieces,-distilled-dendritic" data-row="31" data-v-53d69be2><p id="unverified-synonym-terbium-pieces,-distilled-dendritic" data-row="31" data-v-53d69be2>Terbium pieces, distilled dendritic</p></p><p class="result" id="unverified-synonym-terbium-rod,-12.7mm-(0.50in)-dia" data-row="32" data-v-53d69be2><p id="unverified-synonym-terbium-rod,-12.7mm-(0.50in)-dia" data-row="32" data-v-53d69be2>Terbium rod, 12.7mm (0.50in) dia</p></p><p class="result" id="unverified-synonym-terbium,-lump" data-row="33" data-v-53d69be2><p id="unverified-synonym-terbium,-lump" data-row="33" data-v-53d69be2>terbium, lump</p></p></div></div></div></div></div></div><div class="accordion-margins" data-v-3ad33253><div id="Names-Accordion-1" data-v-3ad33253 data-v-225c119e><div class="expansion-panels" id="accordion-database-ids" tabindex="0" data-v-225c119e><div class="expansion-panel" data-v-225c119e><div class="expansion-panel-title" id="accordion-database-ids-title" 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