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alt="WebElements logo"></a> <a class="white" href="./">Gadolinium - <sub>64</sub>Gd</a>  <audio id="myAudio_f"> <source src="../_media/elements/snds_f/Gd.mp3" type="audio/mpeg">Your user agent does not support the HTML5 Audio element. </audio> <button class="pure-button f_button" style=" display: inline;" type="button" onclick="audf_play_pause()"> 🔊  </button> <script> function audf_play_pause() { var myAudiof = document.getElementById("myAudio_f"); if (myAudiof.paused) { myAudiof.play(); } else { myAudiof.pause(); }} </script></span> </div> </div> </div> <div id="main">  <div class="pure-u-1 pure-u-sm-1-1"> <div class="pure-menu pure-menu-horizontal pure-menu-scrollable"> <a href="#" class="pure-menu-link pure-menu-heading">▸▸</a> <ul class="pure-menu-list"> <li class="pure-menu-item">🇬🇧 Gadolinium</li> <li class="pure-menu-item">🇺🇦 Гадоліній</li> <li class="pure-menu-item">🇨🇳 釓</li> <li class="pure-menu-item">🇳🇱 Gadolinium</li> <li class="pure-menu-item">🇫🇷 Gadolinium</li> <li class="pure-menu-item">🇩🇪 Gadolinium</li> <li class="pure-menu-item">🇮🇱 גדוליניום</li> <li class="pure-menu-item">🇮🇹 Gadolinio</li> <li class="pure-menu-item">🇯🇵 ガドリニウム</li> <li class="pure-menu-item">🇵🇹 Gadolínio</li> <li class="pure-menu-item">🇪🇸 Gadolinio</li> <li class="pure-menu-item">🇸🇪 Gadolinium</li> <li class="pure-menu-item">🇷🇺 Гадолиний</li> </ul> </div> </div> <div class="pure-g"> <div class="pure-u-1 pure-u-sm-1-1"> <div class="google_navbar_positioning"> <form action="https://www.google.com" id="cse-search-box"> <div> <input type="hidden" name="cx" value="partner-pub-9334432533380510:6223510783"> <input type="hidden" name="ie" value="UTF-8"> <input type="text" name="q" size="28"> <input type="submit" name="sa" value="Search"> </div> </form> <script> </script> </div> </div> </div> <main> <div class="pure-g"> <div class="pure-u-1 pure-u-sm-1-1"> <h1 class="f">Gadolinium - <sub><small>64</small></sub>Gd: the essentials</h1> <div class="pure-menu pure-menu-horizontal pure-menu-scrollable"> <ul class="pure-menu-list z_menu"> <li class="pure-menu-item f"><a href="../gadolinium/" class="pure-menu-link">▸▸ Gd Essentials</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/physics.html">Physical properties</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/atoms.html">Electron shell data</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/atom_sizes.html">Atom sizes</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/electronegativity.html">Electronegativity</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/isotopes.html" >Isotopes and NMR</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/crystal_structure.html">Crystal structure</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/thermochemistry.html">Thermochemistry</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/history.html">History</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/uses.html">Uses</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/geology.html">Geology</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/biology.html">Biology</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/compounds.html">Binary compounds</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/compound_properties.html" >Compound properties</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/chemistry.html">Element reactions</a></li> <li class="pure-menu-item f"><a class="pure-menu-link" href="../gadolinium/contents.html">List all Gd properties</a></li> </ul> </div> </div> </div>  <div class="pure-g"> <div class="pure-u-1 pure-u-sm-1-2">  <ul class="ul_facts_table"> <li><a href="../periodicity/name_english/" title="Element names">Name</a>: gadolinium</li> <li><a href="../periodicity/name_english/" title="Element symbol">Symbol</a>: Gd</li> <li><a href="../periodicity/atomic_number/" title="Element atomic number">Atomic number</a>: 64 </li> <li><a href="../periodicity/atomic_weight/" title="Element atomic weight">Relative atomic mass (<i>A</i><sub>r</sub>)</a>: 157.25 (3) g [see note <a href="../periodicity/atomic_weight/index.html#footnote_g">g</a>] </li> <li><a href="../periodicity/standard_state/" title="Element standard state">Standard state</a>: solid at 298 K</li> <li><a href="../periodicity/standard_state/" title="Element colour">Appearance</a>: silvery white</li> <li><a href="../periodicity/classification/" title="Classification of gadolinium as metal, non-metal, or semi-metal">Classification</a>: Metallic </li> </ul> </div> <div class="pure-u-1 pure-u-sm-1-2"> <ul class="ul_facts_table"> <li><a href="../periodicity/group_number/" title="The group within which gadolinium is located">Group in periodic table</a>: </li> <li><a href="../periodicity/group_number/" title="The name of the group (if there is one) within which gadolinium is located">Group name</a>: Lanthanoid</li> <li><a href="../periodicity/group_number/" title="The period within which gadolinium is located">Period in periodic table</a>: 6 (lanthanoid)</li> <li><a href="../periodicity/group_number/" title="The block within which gadolinium is located">Block in periodic table</a>: f</li> <li><a href="../periodicity/electron_shell_structure/" title="Shell structure">Shell structure</a>: 2.8.18.25.9.2 </li> <li><a href="../periodicity/cas_registry_id/" title="Chemical Abstract Service (CAS) Registry numbers for the elements">CAS Registry</a>: 7440-54-2</li> </ul> </div> </div> <p class="p_first"> Gadolinium atoms have 64 electrons and the <strong><a href="../periodicity/electron_shell_structure/">shell structure</a></strong> is 2.8.18.25.9.2. The <strong> <a href="../periodicity/electronic_configuration/">ground state electronic configuration of neutral gadolinium is</a></strong> [<strong>Xe</strong>].<strong>4f</strong><sup>7</sup>.<strong>5d</strong><sup>1</sup>.<strong>6s</strong><sup>2</sup> and the <strong><a href="../periodicity/term_symbol/">term symbol of gadolinium </a> is</strong> <sup>9</sup><strong>D</strong><sub>2</sub>. </p> <h2 class="f">Gadolinium: description  <audio id="myAudio_desc"> <source src="../_media/elements/snds_description/Gd.mp3" type="audio/mpeg">Your user agent does not support the HTML5 Audio element. </audio> <button class="pure-button f_button" style="display: inline;" type="button" onclick="auddesc_play_pause()">🔊</button> <script> function auddesc_play_pause() { var myAudiodesc = document.getElementById("myAudio_desc"); if (myAudiodesc.paused) { myAudiodesc.play(); } else { myAudiodesc.pause(); }} </script> </h2> <div class="pure-g"> <div class="pure-u-1 pure-u-sm-1-1"> <p class="p_first">Gadolinium is silvery white, has a metallic lustre, and is is malleable and ductile. It is ferromagnetic (strongly attracted by a magnet).</p> <p>The metal is relatively stable in dry air, but in moist air it tarnishes with the formation of a loosely adhering oxide film which "spalls" off and exposes more surface to oxidation. The metal reacts slowly with water and is soluble in dilute acid. Gadolinium has the highest thermal neutron capture cross-section of any known element. </p> <p class="pure-img"><img src="../_media/elements/element_pictures/Gd.jpg" alt="gadolinium" /><br />This sample is from <a href="http://www.element-collection.com/">The Elements Collection</a>, an attractive and safely packaged collection of the 92 naturally occurring elements that is available for sale.</p> </div> </div>  <div class="pure-g display_table"> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: physical properties</h2> <ul class="spark_table_list"> <li><a href="../periodicity/density/" title="view definition and images showing periodicity for density of elemental solids"><img alt="Density of the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,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" /> Density of solid</a>: 7901 kg m<sup>-3</sup></li> <li><a href="../periodicity/molar_volume/" title="view definition and images showing periodicity for molar volumes of the elements"><img alt="Molar volume of the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,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" /> Molar volume</a>: 19.90 cm<sup>3</sup></li> <li><a href="../periodicity/thermal_conduct/" title="show definition and view pictures showing periodicity of thermal conductivity in the periodic table"><img alt="Thermal conductivity of the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAAAwCAIAAAF+gFo2AAAABGdBTUEAANkDQtZPoQAAAAlwSFlzAAALEwAACxMBAJqcGAAAACR0RVh0U29mdHdhcmUAUXVpY2tUaW1lIDcuNS41IChNYWMgT1MgWCkADDxZHwAAAAd0SU1FB9kBEhYZDy2BOqgAAARASURBVHic7ZrLLixRFIZXNSHuOcQ1MSMGBu4RQ8kRD+ARPIHEKxh7BhMi4QkwoNNMmAkxkEhESARB3C91/l1/VVvdpdJNH13ndPWXTnX1tqr2ZV12rVVEMmLPzqa3LC3ZDqXm19OTfXsru7tSUSHPz3J5KR0dlLOM7N2dvL7K4qL09UllpXR2yvW1Ea2qytCv5XZ2dCR1dVJTI+/vq+vrbBwbG8s47O3t9JarKw4b5zF5eLDxuby0n5/teNz+9cuIHB9TtFS6usz31ZVg/Gjt7ZX7e2lpEefqLEZuPz7K+bm0tsrbG36ubmykDNvO5j5pw3cHDpaX7bm5DNLT0/b8vO2hBnZ4KLW1RhVQC+aHZRoakv19o7ieHunuls1Nox98MHgsu2Wusizna2Vl5ffIyOrW1pdGjmlbHwPDwuBeGBIWJhZzz2Mx98/v7+7x9tbCcv8D5KaqnR2//6RLwy49j0p25lwM06+vz9DXzIzxulQcv2xulkQCNm70/PIiBwcyMCB7e1hYKS+X8XFZWJDhYbm4MPbd3p682Om5rU0mJ40a8Lm5kZMTOT2VszMjCseF2cCEMDrcGr6pFsi5GEYD86JKoWQYFs4bGlyR0VEZHJSmJtMCI4NbafP8toV9ST6dnMyzNOVWWKeSEqmuNqsgzvydWzAAFBjaYPPTi7cpMLjH46Zpaur7t4Ylg7U1c5yY+FSGkc9TMoweZPTKjMBtQX9/RkGvY7gzSCRwME4N4HwArg3g3QAODuDjAG4O4OkAzg7g7wAuD+D14m13yvc/6xihACAaiDJ/gLAAEBmSMogPAO4OsJWIs38CxArxVg4eDxobzZFKtT6cL7VjOhAiCUg6oAg3VLcbtjO2sIUgyADEGYBtGJSVfXSPmJO8s+rePUMIwhFRCMevBqKvkmvgypH0pRcGQPGWhRrignOpdbtWCqFl6HPHDP07eakEgfgJEEIBoqh4dkA4FDWIgoyrBUX+NwmfWeaL0Han0GYc2rYY+ozzvh+HPuO8PwiEPuO8P4GEHbny/+gT2oyjR2gPe6H7sZ8ffsosWnWRIn+JlLilUwnL98TwfxE0l8hFj1QN6xc3Tg7lCuWQSeWCm4UR5mIkICMLItIaTt2JmQGQ3HPG3GHWSbLIPbMh4hpmdkycHJm4mTJhvkyYNRPmzoQZNGEeTZhNE+bUhJk1YX5NmGUT5trEe+FrCMi7g4i4hpnpE9YEiD8rIKwSENYK/Pdh3YDoXJo1BKKjMesJRMcU5tiEFQaiy5BZPDtEXMM6I2KlgvgzQcKsiWjtafnkW+A0GQ0rJ4T1E8IqCmEthWhts67iH3OAtiOn4ZRlYLWHsOZDfrry89Pol2qR03CRQierpNet7LlXqEv0Hqgjto7SQfJBkV+j9/ygdvX0ls0/eUXOh4PrlkGwnklY1SSsbRK9n2u0FQRo/qffskdOw0UKnT8b/TNIn3ARwwAAAABJRU5ErkJggg==" /> Thermal conductivity</a>: 11 W m<sup>‑1</sup> K<sup>‑1</sup></li> </ul> <p><a class="pure-button" href="./physics.html">More physical properties...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: heat properties</h2> <ul class="spark_table_list"> <li><a href="../periodicity/melting_point/" title="show definition and view pictures showing periodicity of melting point in the periodic table"><img alt="Melting point on a miniature periodic table spark table" src="data:image/png;base64,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" /> Melting point</a>: 1585 [1312 °C (2394 °F)] K</li> <li><a href="../periodicity/boiling_point/" title="show definition and view pictures showing periodicity of boiling point in the periodic table"><img alt="Boiling point on a miniature periodic table spark table" src="data:image/png;base64,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" /> Boiling point</a>: 3523 [3250 °C (5882 °F)] K</li> <li><a href="../periodicity/enthalpy_fusion/" title="show definition and view pictures showing periodicity of fusion enthalpy in the periodic table"><img alt="Enthalpy of fusion on a miniature periodic table spark table" src="data:image/png;base64,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" /> Enthalpy of fusion</a>: 20.5 kJ mol<sup>-1</sup></li> </ul> <p><a class="pure-button" href="./thermochemistry.html">More thermochemical properties...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: atom sizes</h2> <ul class="spark_table_list"> <li><a href="../periodicity/atom_radius_emp/" title="View atomic radius data for the elements"><img alt="Atomic radius (empirical) of the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,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" /> Atomic radius (empirical)</a>: 180 pm</li> <li><a href="../periodicity/rad_cov_single/" title="View molecular single bond covalent radii data for the elements"><img alt="Covalent (single bond) radius on a periodic table spark table" src="data:image/png;base64,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" /> Molecular single bond covalent radius</a>: 169 (coordination number 3) ppm</li> <li><a href="../periodicity/van_der_waals_rad/" title="View van der Waals' radius data for the elements"><img alt="van der Waals radius on a periodic table spark table" src="data:image/png;base64,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" /> van der Waals radius</a>: 279 ppm</li> </ul> <p><a class="pure-button" href="./atom_sizes.html">More atomc size properties...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: electronegativities</h2> <ul class="spark_table_list"> <li><a href="../periodicity/eneg_pauling/" title="View definition and pictures showing periodicity of Pauling electronegativity"><img alt="Pauling electronegativity of the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAAAwCAIAAAF+gFo2AAAABGdBTUEAANkDQtZPoQAAAAlwSFlzAAALEwAACxMBAJqcGAAAACR0RVh0U29mdHdhcmUAUXVpY2tUaW1lIDcuNS41IChNYWMgT1MgWCkADDxZHwAAAAd0SU1FB9kBEhYYIwZCZwoAAASjSURBVHic7ZnLTttAFIaPU+gFVKkStAKpogKVTVZlzzJIXfIGWfQBWPEUXSPeolKlblC86xIJIfVCuwBBuKTAooWqUG6d/jO/nRwnmGACscD5hAZnbM/tXGbOsUhTjO/X10xNmXy+VCp59sePH/L1qxwcyO/fcnws/f2ysWFrlpfd7V+/ZHVV3r2Tx4/t7adPpVKRwUF/eLhJv17Q2eKinJzIw4dydla79+pV02Hv7NTXzM6a168NGzCHh/Lli+zuyv37srUlxtgLjPzjR+/9+5zkcvLggfT0yOamYIYLC/LkiZ3C+Hizjjlys7Zm593bK11d5wzbvH3bvJ0oWG+UrrE3b8zExMVrYObmZHvb/mEgnz/7tYFh4n/+2In//StYIywCRIbnIBysAOTT12dv7e/bmtNT+fRJuru9mRn3MpZpb8+fn0808gkMtjYwjIeSNMZfWSm8eOGvrRWGhvxyufD8ua3/98/eqlTwWqJubogriypnL4vFRvup7wB6CYuCaubzJqx0cobqQDYXMzJilQwrh3V99ox1oZz39qxGQ5JHR3bNHz2yAodIscKeZ+UMk8UzKNfXrbaenXkfPoTqis7R8L179p2lpXolQRO4xWdevhR01t0dzhm2gxvoB53AbuEBCN7E+7BneACYEoZGKxsd9Scnw2FfVcMSPV9PS+oZffnnT7ukcByYPOamnFakw+YO7BYA07iCdSSl5OB1qJzFou1+bAylVyhcuWmYnv337Zstv3+3ZblsS+xfItpulVWAplbZFJgtgPEA6hV0B4QmXCXcBmFhAKoFYDkAdg1g2oBqBgMH3PhgfuKU1bbhGoG9Axh7tR1ew/YBzD9sB05AajMmnDfHC8OvdgPPIOF6wD8AmLg4WwdwFNVB8C3dDvwG4MSc9wi6Cv7ncrUXOBvOAy4F0KtoQbBLdg8nA/J5Ww4N2dJJVAYGbAm7BKOjKHwa4syM1JbamOoSJXVESUl5j/Maqwz1UPsttx5whijhD+21e6bgFtZ3BhP4RkJ58y24+vNmGd8x/KeE+gkvKqHUKbMYdxo7vzvhZm837d8kcjfdWRyp7U6pz7jt22JqM05tP05dxsGv9h0EUp9x208gqWt1248+qc04e6R22EtbqzXtOWV2tLpDh2siYsU6lPCmp9s+mOukGrBI1GtmzntET5gueiKMoUgrkVQrBFEYYSxGGJERxmWE5zxHXOY/4xJWn8SuIWZsHUadhBEJ0eccnhtIQzTaSOYkHPXSjOUIT1mEkTJhvEwYNRN9+mIETfQHXUZjhCfQYBRqGIyvCSPrxvHoesbdhNF3w3gYiZPMSbgr/o66pe2HkT7R0mOugGj7Z96AMIomjKsJMwlES173FTce5hmI1lCVc9BkXMI5NX+9otr2tL0xK0Kq33wl3sNrqWppM3NCmD8hzKIQtccGGRXC+I247ArxdYTmMi0kcxKOemljaj+UV7zpzM9Nk+mzdIe7zjlZrUaMPq/G5bOU/TPjR5j3C+pVOwXlgX0V8UTygRq9P+u+XJ6QXOYDeOZsOLmEmc8k+nzL3GbQqmpW75MJs51Jucw3+MxJuMNd5z/Y521wUipfVgAAAABJRU5ErkJggg==" /> Pauling electronegativity</a>: 1.20 (Pauling units)</li> <li><a href="../periodicity/eneg_allred_rochow/" title="View definition and pictures showing periodicity of Allred Rochow electronegativity"><img alt="Allred-Rochow electronegativity of the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,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" />Allred Rochow electronegativity</a>: 1.11 (Pauling units)</li> <li><a href="../periodicity/eneg_mulliken_j/" title="View definition and pictures showing periodicity of Mulliken-Jaffe electronegativity"><img alt="Mulliken-Jaffe electronegativity of the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,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" />Mulliken-Jaffe electronegativity</a>: (no data)</li> </ul> <p><a class="pure-button" href="./electronegativity.html">More electronegativity properties...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: orbital properties</h2> <ul class="spark_table_list"> <li><a href="../periodicity/ionis_energy_1/" title="View definition and pictures showing first ionisation energies"><img alt="First ionization energy the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,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" /> First ionisation energy</a>: 593.37 kJ mol<sup>‑1</sup></li> <li><a href="../periodicity/ionis_energy_2/" title="View definition and pictures showing second ionisation energies"><img alt="Second ionization energy the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,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" /> Second ionisation energy</a>: 1165.2 kJ mol<sup>‑1</sup></li> <li><a href="../periodicity/ionis_energy_3/" title="View definition and pictures showing third ionisation energies"><img alt="Third ionization energy the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,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" /> Third ionisation energy</a>: 1980 kJ mol<sup>‑1</sup></li> </ul> <p><a class="pure-button" href="./atoms.html">More orbital properties...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: abundances</h2> <ul class="spark_table_list"> <li><a href="../periodicity/abund_universe/" title="Definitions and pictures showing periodicity of element abundances in the universe"><img alt="Chemical elements abundance by weight in the universe on a miniature periodic table spark table" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFAAAAAwCAIAAAF+gFo2AAAABGdBTUEAANkDQtZPoQAAAAlwSFlzAAALEwAACxMBAJqcGAAAACR0RVh0U29mdHdhcmUAUXVpY2tUaW1lIDcuNS41IChNYWMgT1MgWCkADDxZHwAAAAd0SU1FB9kBEhYYDzSaC+kAAAGZSURBVHic7ZndFoIgDIChejS99lm91keriFx5wBg/IsyA73TSEPfjGDBjzIkQYtvyfIr7XbZz4+WVi1u4Ba6qn+dZvdb3vet2g9lf3sItZnPO4y13mI0qxxHjqMmWZtp6//inuSUUpmkSOkaJt/Vs49Xmp8sNq2anFfnJEir5kX0eD3a9suARCNKXOz8NzJqXVlGIZs8gR2lGR1hGdgzPGyaLzotMiF3ZEaxlHCGh2GZR+DRZk8shGuTAN8iROcj0ZFra0SBHoZquqNS6wCHnfAgeB8xA88Jh6uGQ32NDjAtPYUPmYI8dnkTXdXvU/KRocDoVHoiCyb9IxO3eIyBbncg8JlsWzxTj5CppY0y2EWgxzgbZ1ofM4/og2+ydaVTbOWrMt1HdaByENp0I7MIfshYsEj4M63l1s4ceYWRNiqmkYtDsUc9Ve6AuA7AXeUr/6iKcpk5MATbKkKhiVBdhrxz+d1oOH426495Xb6Sjugi3HC4drxwu6b+W6iLcKB2vMih09qZah32quupyOHm1dLYZvroIN0rnBSkmLf5/w30JAAAAAElFTkSuQmCC" />Universe</a>: 2 ppb by weight</li> <li><a href="../periodicity/abund_crust/" title="Definitions and pictures showing periodicity of element abundances in the earth's crust"><img alt="Chemical elements abundance by weight in the earth's crust on a miniature periodic table spark table" src="data:image/png;base64,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" />Crustal rocks</a>: 5200 ppb by weight</li> <li><a href="../periodicity/abund_humans/" title="Abundance in humans of the chemical elements displayed graphically"><img alt="Chemical elements abundance by weight in humans on a miniature periodic table spark table" src="data:image/png;base64,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" />Human</a>: (no data) ppb by weight</li> </ul> <p><a class="pure-button" href="./geology.html">More geological data...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: crystal structure</h2> <figure><img class="pure-img" src="../_media/elements/crystal_structure_image/Gd-sf.jpg" alt="Gd crystal structure"><figcaption>The solid state structure of gadolinium is: hcp (hexagonal close-packed).</figcaption></figure> <p><a class="pure-button" href="./crystal_structure.html">More crystallographic data...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: biological data</h2> <ul class="spark_table_list"> <li><a href="../periodicity/abund_humans/" title="View definition and pictures showing human abundance by weight"><img alt="Human abundance by weight of the chemical elements on a miniature periodic table spark table" src="data:image/png;base64,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" /> Human abundance by weight</a>: (no data) ppb by weight</li> </ul> <p class="p_first">Gadolinium has no biological role but is said to stimulate the metabolism.</p> <p><a class="pure-button" href="./biology.html">More biological data...</a></p> <div> <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>  <ins class="adsbygoogle" style="display:inline-block;width:300px;height:250px" data-ad-client="ca-pub-9334432533380510" data-ad-slot="2897369985"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: uses</h2> <p><a class="pure-button" href="./uses.html">Uses...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: reactions</h2> <p> Reactions of gadolinium as the element with air, water, halogens, acids, and bases where known. </p> <p><a class="pure-button" href="./chemistry.html">View reactions of gadolinium...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: binary compounds</h2> <p> Binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and other compounds of gadolinium where known. </p> <p><a class="pure-button" href="./compounds.html">View binary compounds...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: compound properties</h2> <p> Bond strengths; lattice energies of gadolinium halides, hydrides, oxides (where known); and reduction potentials where known. </p> <p><a class="pure-button" href="./compound_properties.html">View compound properties...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: history</h2> <strong>Gadolinium</strong> was <a href="../periodicity/discovery/" title="Further information on element discoveries">discovered</a> by Jean de Marignac in 1880 at Switzerland. <a href="../periodicity/discovery/" title="Further information on element discoveries">Origin of name</a>: named after J. "<em>Gadolin</em>", a Finnish chemist and minerologist. <p><a class="pure-button" href="./history.html">More history...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-2"> <h2 class="f">Gadolinium: isotopes</h2> <div><figure><img class="pure-img" src="../_media/elements/isotopes/isotope_abundance_Gd.png" alt="Isotope abundances of gadolinium" /><figcaption>Isotope abundances of gadolinium with the most intense signal set to 100%.</figcaption></figure></div> <p class="p_first">Gadolinium has the highest cross section for the capture of thermal neutrons of any element and this is mainly due to the high cross section of Gd-157 (255,000 barn) and Gd-155 (61,000 barn). Natural Gadolinium is currently used as a burnable poison in nuclear fuel, but the use of Gd-155/157 only has been proposed as this would create an even more effective burnable poison. Gd-152 is used for the production of radioactive Gd-153 which is used for osteoporosis research and bone density measurements. Gd-160 is used in double beta decay research. </p> <p><a class="pure-button" href="./isotopes.html">More isotope and NMR data...</a></p> </div> <div class="pure-u-1 pure-u-md-1-1 pure-u-lg-1-1"> <h2 class="f">Gadolinium: isolation</h2> <p class="p_first"> <a href="../periodicity/isolation/" title="literature sources referring to isolation of pure gadolinium">Isolation</a>: gadolinium metal is available commercially so it is not normally necessary to make it in the laboratory, which is just as well as it is difficult to isolate as the pure metal. This is largely because of the way it is found in nature. The lanthanoids are found in nature in a number of minerals. The most important are xenotime, monazite, and bastnaesite. The first two are orthophosphate minerals LnPO<sub>4</sub> (Ln deonotes a mixture of all the lanthanoids except promethium which is vanishingly rare) and the third is a fluoride carbonate LnCO<sub>3</sub>F. Lanthanoids with even atomic numbers are more common. The most comon lanthanoids in these minerals are, in order, cerium, lanthanum, neodymium, and praseodymium. Monazite also contains thorium and ytrrium which makes handling difficult since thorium and its decomposition products are radioactive.</p> <p>For many purposes it is not particularly necessary to separate the metals, but if separation into individual metals is required, the process is complex. Initially, the metals are extracted as salts from the ores by extraction with sulphuric acid (H<sub>2</sub>SO<sub>4</sub>), hydrochloric acid (HCl), and sodium hydroxide (NaOH). Modern purification techniques for these lanthanoid salt mixtures are ingenious and involve selective complexation techniques, solvent extractions, and ion exchange chromatography. </p> <p>Pure gadolinium is available through the reduction of GdF<sub>3</sub> with calcium metal.</p> <p class="equation">2GdF<sub>3</sub> + 3Ca → 2Gd + 3CaF<sub>2</sub></p> <p>This would work for the other calcium halides as well but the product CaF<sub>2</sub> is easier to handle under the reaction conditions (heat to 50°C above the melting point of the element in an argon atmosphere). Excess calcium is removed from the reaction mixture under vacuum.</p> </div> </div>  </main> <div id="footer"> <footer> <div class="footer"> <div class="pure-g"> <div class="pure-u-1-2 pure-u-sm-1-2 pure-u-lg-1-4 pure-menu custom-restricted-width"> <ul class="pure-menu-list"> <li class="pure-menu-heading footer_h">Key properties</li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/eneg_pauling/">Electronegativity </a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/melting_point/">Melting point</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/density/">Density </a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/molar_volume/">Molar volume</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/ionis_energy_1/">Ionization energy (1st)</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/covalent_radius/">Covalent radius</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/metallic_radius/">Metallic radius</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/abund_crust/">Abundance: earth's crust</a></li> </ul> </div> <div class="pure-u-1-2 pure-u-sm-1-2 pure-u-lg-1-4 pure-menu custom-restricted-width"> <ul class="pure-menu-list"> <li class="pure-menu-heading footer_h">Shop</li> <li class="pure-menu-item">Sorry, shop closed</li> </ul> </div> <div class="pure-u-1-2 pure-u-sm-1-2 pure-u-lg-1-4 pure-menu custom-restricted-width"> <ul class="pure-menu-list"> <li class="pure-menu-heading footer_h">Social</li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.facebook.com/webelements.periodic.table">Facebook</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://twitter.com/periodic_table">Twitter</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.pinterest.com/periodictable/">Pinterest</a></li> </ul> </div> <div class="pure-u-1-2 pure-u-sm-1-2 pure-u-lg-1-4 pure-menu custom-restricted-width"> <ul class="pure-menu-list"> <li class="pure-menu-heading footer_h">Administration</li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/nexus/your-privacy/" title="Your privacy">Privacy</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/nexus/about-webelements/" title="About WebElements">About</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/nexus/webelements-and-copyright/" title="Copyright information about WebElements">Copyright</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/nexus/acknowledgements/" title="Acknowledgements">Thanks...</a></li> </ul> </div> </div> </div> <address> <p> <a href="https://www.webelements.com/"><img class="logo_m" src="../_media/icons/logo_60.png" alt="WebElements home" /></a><br /> <strong>WebElements:</strong> THE periodic table on the WWW [<a href="https://www.webelements.com/">www.webelements.com</a>]<br /> <a href="https://www.webelements.com/nexus/webelements-and-copyright/">Copyright </a> 1993-2024 <a href="https://winter.group.shef.ac.uk/">Mark Winter</a> [ <a href="https://www.sheffield.ac.uk/chemistry/">The University of Sheffield </a> and WebElements Ltd, UK]. 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