Gallium vs Osmium
| Property | Ga Gallium | Os Osmium |
|---|---|---|
| Atomic number | 31 | 76 |
| Symbol | Ga | Os |
| Name | Gallium | Osmium |
| Category | post-transition-metal | transition-metal |
| Standard Atomic Weight | 69.723 u | 190.23 u |
| Period | 4 | 6 |
| Group | 13 | 8 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]4s23d104p1 | [Xe]6s24f145d6 |
| Oxidation states | [-5, -4, -3, -2, -1, 0, 1, 2, 3] | [-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8] |
| Electronegativity (Pauling) | 1.81 | 2.2 |
| Electron affinity | 0.3 eV | 1.1 eV |
| Density | 5910 kg/m³ | 2.258720e+4 kg/m³ |
| Melting point | 29.76 °C | 3032.85 °C |
| Boiling point | 2203.85 °C | 5011.85 °C |
| Discovery year | 1875 | 1803 |