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| Curium | Curium | Kurij | Curio | Curium | ||||||||||||||||||||
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Cm Curium |
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- Curium was discovered by Glenn T. Seaborg, Ralph A. James and Albert Ghiorso (USA) in 1944. Named in honour of Pierre and Marie Curie. It is silvery, malleable, synthetic radioactive metal. So radioactive it glows in the dark.
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TRANSITION ELEMENT: ACTINIDE | |
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| Relative atomic mass: | [247] | Electronic configuration: | [Rn] 5f7 6d1 7s2 |
| Formal oxidation number: | +3 | Electronegativities: | - |
| Thermal conductivity: | - W m-1 K-1 | Electrical resistivity (20 °C): | - μΩcm |
| Atomic radius: | 174 pm | Standard state (20 °C): | solid |
| Density (g dm-3): | 13300 (293 K) | Molar volume (cm3 mol-1): | 18.57 (293 K) |
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THERMAL PROPERTIES | |
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| Melting point: | 1345 °C | Heat of fusion: | - kJ mol-1 |
| Boiling point: | - °C | Heat of vaporization: | - kJ mol-1 |
| Critical temperature: | - °C | Heat of atomization: | 382 kJ mol-1 |
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IONIZATION ENERGIES AND ABUNDANCE | |
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| 1st ionization energy: | 580.85 kJ mol-1 | Abundance of element (air): | - ppm |
| 2nd ionization energy: | - kJ mol-1 | Abundance of element (Earth's crust): | - ppm |
| 3rd ionization energy: | - 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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MINERALS AND USES | |
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- Curium was made by bombarding plutonium with helium ions.
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REDUCTION POTENTIALS | |
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Balanced half-reaction | Eo / V | Annotation |
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