Osmium vs Nihonium
| Property | Os Osmium | Nh Nihonium |
|---|---|---|
| Atomic number | 76 | 113 |
| Symbol | Os | Nh |
| Name | Osmium | Nihonium |
| Category | transition-metal | post-transition-metal |
| Standard Atomic Weight | 190.23 u | 286 u |
| Period | 6 | 7 |
| Group | 8 | 13 |
| Block | s | p |
| Phase at STP | solid | solid |
| Electron configuration | [Xe]6s24f145d6 | [Rn] 5f14 6d10 7s2 7p1(predicted) |
| Oxidation states | [-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8] | N/A |
| Electronegativity (Pauling) | 2.2 | N/A |
| Electron affinity | 1.1 eV | 0.6 eV |
| Density | 2.258720e+4 kg/m³ | 1.600000e+4 kg/m³ |
| Melting point | 3032.85 °C | 426.85 °C |
| Boiling point | 5011.85 °C | 1156.85 °C |
| Discovery year | 1803 | 2004 |