Xenon vs Iridium
| Property | Xe Xenon | Ir Iridium |
|---|---|---|
| Atomic number | 54 | 77 |
| Symbol | Xe | Ir |
| Name | Xenon | Iridium |
| Category | noble-gas | transition-metal |
| Standard Atomic Weight | 131.293 u | 192.217 u |
| Period | 5 | 6 |
| Group | 18 | 9 |
| Block | p | s |
| Phase at STP | gas | solid |
| Electron configuration | [Kr]5s24d105p6 | [Xe]6s24f145d7 |
| Oxidation states | [0, 2, 4, 6, 8] | [-3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9] |
| Electronegativity (Pauling) | 2.6 | 2.2 |
| Electron affinity | -0.8 eV | 1.565 eV |
| Density | 5.887 kg/m³ | 2.256220e+4 kg/m³ |
| Melting point | -111.79 °C | 2445.85 °C |
| Boiling point | -108.1 °C | 4427.85 °C |
| Discovery year | 1898 | 1803 |