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Periodic Table of Chemical Elements
Os |
Osmium |
Os | |
Atomic number |
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76 | Atomic weight | 190.233 amu | Density |
22.610 g/cm3 (STP) |
Melting | 3027 °C |
Boiling | 5027 °C |
Covalent radius | 1.28 Å |
Van der Waals radius | Å |
Ionic radius | 0.63 Å |
First ionization potential | 8.706 eV = 70218 cm-1 = 840.0 kJ/mol
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Electron affinity | -1.099 eV = -8861 cm-1 = -106.0 kJ/mol | Electronic configuration | 1s22s22p63s23p63d104s24p64d104f145s25p66s25d6 | Stable and very long lived isotopes | 187Os: 1.6%, 188Os: 13.3%, 189Os: 16.1%, 190Os: 26.4%, 192Os: 41.0% |
Wikipedia article about Osmium |
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