| Iridium | |
| Elemental State | Ir |
| Electron Configuration | 1s22s22p63s23p63d104s24p64d104f145s25p66s25d7 |
| First Ionization Potential | 8.967 eV |
| Electron Affinity | 1.564 eV |
| Z* | |
| Pauling Electronegativity | 2.2 |
| Covalent Radius | 1.37 Å |
| Metallic Radius | 1.36 Å |
| Ionic Radius | 0.82 Å Ir3+ coordination number
= 6
0.765 Å Ir4+ coordination number = 6 0.71 Å Ir5+ coordination number = 6 |
| van der Waal's Radius | |
| Melting Point | 2446 oC |
| Boiling Point | 4428 oC |
| Density | 22.42 g/cm3 |
| Other Properties | |