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Einsteinium
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| Es | 99 | 252 | 860 °C | Unknown | Solid | Unknown | Metal  |
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| General |
| Name, Symbol, Number |
einsteinium, Es, 99 |
| Chemical series |
actinides |
| Group, Period, Block |
n/a, 7, f |
| Appearance |
unknown, probably silvery
white or metallic gray |
| Standard atomic weight |
(252) g·mol−1 |
| Electron configuration |
[Rn] 5f11 7s2 |
| Electrons per shell |
2, 8, 18, 32, 29, 8, 2 |
| Physical properties |
| Phase |
solid |
| Density (near r.t.) |
8.84 g·cm−3 |
| Melting point |
1133 K
(860 °C, 1580 °F) |
| Atomic properties |
| Oxidation states |
2, 3, 4 |
| Electronegativity |
1.3 (scale Pauling) |
| Ionization energies |
1st: 619 kJ/mol |
| Miscellaneous |
| Magnetic ordering |
no data |
| CAS registry number |
7429-92-7 |
| Selected isotopes |
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| References |
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Einsteinium Compounds
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Source: Wikipedia article Einsteinium
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Chemistry Quick Facts