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|
Curium
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| Cm | 96 | 247 | 1340 °C | 3110 °C | Solid | 13.51 g/cm3 | Metal  |
|
|
|
| General |
| Name, Symbol, Number |
curium, Cm, 96 |
| Chemical series |
actinides |
| Group, Period, Block |
n/a, 7, f |
| Appearance |
silvery |
| Standard atomic weight |
(247) g·mol−1 |
| Electron configuration |
[Rn] 5f7 6d1 7s2 |
| Electrons per shell |
2, 8, 18, 32, 25, 9, 2 |
| Physical properties |
| Phase |
solid |
| Density (near r.t.) |
13.51 g·cm−3 |
| Melting point |
1613 K
(1340 °C, 2444 °F) |
| Boiling point |
3383 K
(3110 °C, 5630 °F) |
| Heat of fusion |
? 15 kJ·mol−1 |
|
|
| Atomic properties |
| Crystal structure |
hexagonal close-packed |
| Oxidation states |
3
(amphoteric oxide) |
| Electronegativity |
1.3 (scale Pauling) |
| Ionization energies |
1st: 581 kJ/mol |
| Miscellaneous |
| Magnetic ordering |
no data |
| CAS registry number |
7440-51-9 |
| Selected isotopes |
|
|
| References |
|
Curium Compounds
|
Source: Wikipedia article Curium
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Chemistry Quick Facts