Iridium
Transition metal| Atomic number | 77 |
|---|---|
| Category | Transition metal |
| Atomic mass | 192.22 |
| Electron configuration | [Xe]4f¹⁴ 5d⁷ 6s² |
| Oxidation states | +3, +4 |
| Electronegativity | 2.2 |
| Melting point | 2,466 °C |
| Boiling point | 4,428 °C |
| Density | 22.56 g/cm³ |
| Crystal structure | Face-centred cubic |
| Group | 9 |
| Period | 6 |
| Block | d |
| Discovered | 1,803 |
| Crustal abundance | 0.001 ppm |
