Atomic Properties
- Atomic Number
- 77
- Atomic Mass
- 192.2200 u
- Electron Configuration
- [Xe] 4f14 5d7 6s2
- Electronegativity
- 2.20
- Block
- d-block
- Group
- 9
- Period
- 6
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 2719.00 K
- Boiling Point
- 4403.00 K
- Density
- 22.5600 g/cm³
About Iridium
Most corrosion-resistant metal; found in asteroid impact layer.
Isotopes of Iridium
Iridium has 2 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 191Ir | 191 | 190.9605893 | 37.30% | Stable |
| 193Ir | 193 | 192.9629216 | 62.70% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)