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| Lutetium | Lutétium | Lutecij | Lutezio | Lutetium | ||||||||||||||||||||
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Lu Lutetium |
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- Lutetium was discovered by Georges Urbain (France) and independently by Carl Auer von Welsbach (Austria) in 1907. The origin of the name comes from the Greek word Lutetia meaning Paris. It is silvery-white and relatively stable in air, rare earth metal.
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TRANSITION ELEMENT: LANTHANIDE | |
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| Relative atomic mass: | 174.967(1) | Electronic configuration: | [Xe] 4f14 5d1 6s2 |
| Formal oxidation number: | +3 | Electronegativities: | 1 |
| Thermal conductivity: | 16.4 W m-1 K-1 | Electrical resistivity (20 °C): | 79 μΩcm |
| Atomic radius: | 171.8 pm | Standard state (20 °C): | solid |
| Density (g dm-3): | 9840 (298 K) | Molar volume (cm3 mol-1): | 17.78 (298 K) |
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THERMAL PROPERTIES | |
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| Melting point: | 1663 °C | Heat of fusion: | 19.2 kJ mol-1 |
| Boiling point: | 3402 °C | Heat of vaporization: | 428 kJ mol-1 |
| Critical temperature: | 3267 °C | Heat of atomization: | 427.37 kJ mol-1 |
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IONIZATION ENERGIES AND ABUNDANCE | |
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| 1st ionization energy: | 523.52 kJ mol-1 | Abundance of element (air): | - ppm |
| 2nd ionization energy: | 1341.16 kJ mol-1 | Abundance of element (Earth's crust): | 0.3 ppm |
| 3rd ionization energy: | 2022.29 kJ mol-1 | Abundance of element (oceans): | - ppm |
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ISOTOPES | |
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Isotopes | Relative atomic mass | Abundance (%) |
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175Lu | 174.940768(3) | 97.41(2) |
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176Lu | 175.942682(3) | 2.59(2) |
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MINERALS AND USES | |
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- Lutetium is found with ytterbium in gadolinite and xenotime. Stable lutetium nuclides can be used as catalysts in cracking, alkylation, hydrogenation, and polymerization. The price of 99.9 % pure lutetium pieces is 555.30 € for 5 g.
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REDUCTION POTENTIALS | |
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Balanced half-reaction | Eo / V | Annotation |
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