Iridium
Electron Configuration
|
General Properties
| Atomic Symbol | Ir |
| Atomic Weight | 192.2 g/mol |
| Element Number | 77 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1804 |
| Discoverer | Tennant |
Physical Properties
| Oxidation States | 4, 2,3,6 |
| Boiling Point | 4700 K |
| Melting Point | 2720 K |
| Density | 22.6 g/cm³ |
| Electron Configuration | [Xe]4f14,5d7,6s2 |
| Acid/Base Properties | Basic |
| Crystal Structure | Cubic, face centered |
| Electronegativity | 2.20 |
| Heat of Vaporization | 563.58 kJ/mol |
| Heat of Fusion | 26.36 kJ/mol |
| Electrical Conductivity | 21.3 10^6omg-¹cm-¹ |
| Thermal Conductivity | 147 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.130 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 9.1 |
| Atomic Volume | 8.54 cm³/mol |
| Atomic Radius | 1.36 Å |
| Covalent Radius | 1.27 Å |
| Synthetic | No |