Precious Metal Elements
Osmium［ Atomic number76 Atomic weight190.23 ］
Useful in biotechnology and forensic sciences.
There wouldn’t be many people who’ve seen me before. The other day, I was so upset because everyone told me I smelled like an old man, and they ran away. Do I really smell that bad?
| Os | Osmium | |
|---|---|---|
| Atomic number | 76 | |
| Atomic weight | 190.23 | |
| Isotope | 184Os, 186Os, 187Os, 188Os 189Os, 190Os, 191Os | |
| Crystal Structure | hcp (c/a<1.63) | |
| Metallicity | Trans.Metal | |
| Shell | 2,8,18,32,14,2 | |
| Filling Orbital | 5d6 | |
| Oxidation States | 2,3,4,6,8 | |
| Atomic Radius | Å | 1.92 |
| Covalent Radius | Å | 1.26 |
| Atomic Volume | cm3/mol | 8.49 |
| Density at 293K | g/cm3 | 22.57 |
| Melting Point | ℃ | 3045 |
| Boiling Point | ℃ | 5012 |
| Specific Heat | J/gK | 0.13 |
| Heat of Fusion | kJ/mol | 31.80 |
| Heat of Vaporization | kJ/mol | 746.0 |
| Thermal Conductivity at 273K | W/mK | 87 |
| Specific Resistance at 273K | 10-6 Ωcm | 8.1 |
| Coefficient of Linear expansion at 293K | 10-6 K-1 | 4.7 |
| Ionization Potential | V | 8.43823 |
| 2nd Ionization Potential | V | |
| Electron Affinity | eV | 1.1 |
| Electronegativity | 2.2 | |
| Discovery | year | 1804 |