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Chemical element: Osmium (Os)
| Atomic Number: | 76 |
| Element Symbol: | Os |
| Element Name: | Osmium |
| Atomic Weight: | 190.23 |
| Group Number: | 8 |
| Group Name: | Precious metal or Platinum group metal |
| Period Number: | 6 |
| Block: | d-block |
| Ground State Configuration: | [Xe] 4f14 5d6 6s2 |
| Ground State Level: | 5D4 |
| Standard State: | Solid |
| Bond Length: | 267.5 |
| Atomic Radius Empirical: | 130 |
| Atomic Radius Calculated: | 185 |
| Covalent Radius Empirical: | 128 |
| Electron Affinity: | 106.1 |
| First Ionization Energy: | 840 |
| Pauling Electronegativity: | 2.2 |
| Allred Rochow Electronegativity: | 1.52 |
| Density Of Solid: | 22610 |
| Molar Volume: | 8.42 |
| Velocity Of Sound: | 4940 |
| Rigidity Modulus: | 222 |
| Poissons Ratio: | 0.25 |
| Mineral Hardness: | 7.0 |
| Brinell Hardness: | 3920 |
| Electrical Resistivity: | 8.1 |
| Melting Point: | 3033 |
| Boiling Point: | 5012 |
| Superconduction Temperature: | -272.49 |
| Thermal Conductivity: | 88 |
| Coefficient Of Linear Expansion: | 5.1 |
| Enthalpy Of Fusion: | 31 |
| Enthalpy Of Vaporization: | 630 |
| Enthalpy Of Atmization: | 789 |
| Most Common Oxidation Numbers: | 4 |
| Color: | Bluish grey |
| Classification: | Metallic |
| Discovered By: | Smithson Tennant |
| Discovered At: | England |
| Discovered When: | 1803 |
| Origin Of Name: | From the Greek word osme meaning smell |
Calculate the molecular weight of Osmium or molecular weight Os.
Also see the full list of chemical elements and atomic weights.
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