| Property | Value |
|---|---|
| Atomic number | 77 |
| Atomic weight | 192.2173 amu |
| Element family | Transition metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 191Ir: 37.3%, 193Ir: 62.7% |
| Previous element | Osmium |
| Next element | Platinum |
| Density | 22.65 g/cm3 (STP) |
| Melting | 2443 °C |
| Boiling | 4130 °C |
| Covalent radius | 1.22 Å |
| Ionic radius | 0.625 Å |
| Metallic radius | 1.355 Å |
| First ionization potential | 9.120 eV |
| Electron affinity | 1.564 eV |
| Electronegativity | 2.2 |
| Discovery year | 1803 |
Iridium is an element number 77 from transition metals family. Its symbol is Ir. Iridium atomic weight is 192.2173 amu. Ir stable and long lived isotopes are 191Ir: 37.3%, 193Ir: 62.7%. Iridium electronic configuration is 1s22s22p63s23p63d104s24p64d104f145s25p66s25d7. Iridium density is 22.65 g/cm3 (STP). Iridium melting point is 2443 °C. Iridium boiling point is 4130 °C. Iridium covalent radius is 1.22 Å. Iridium ionic radius is 0.625 Å. Iridium covalent radius is 1.355 Å. Iridium first ionization potential is 9.120 eV. Iridium first ionization potential is 1.564 eV. Iridium electronegativity by Pauling scale is 2.2. Iridium was discovered in 1803.
Please let us know how we can improve this web app.
