The Periodic Table of Elements
76
Os
Osmium
190.23(3) amu
Additional Information:
| State | Group Block | Density | Atomic Radius | Electron Affinity | Ionization Energy | Melting Point | Boiling Point | Year Discovered |
|---|---|---|---|---|---|---|---|---|
| solid | transition metal | 22.61 kg/L | 128 pm | -106 | 840 kJ/mol | 3306 °K | 5285 °K | 1803 |
