Iridium |
| Simbool | Ir |
|---|---|
| Latynse naam | Iridium |
| Atoomgetal | 77 |
| Periode | 6 |
| Element kategorie | Oorgangselemente |
| Relatieve atomiese massa | 192.22 |
| Groep | VIII.B |
| Electronegativiteit | 2.2 |
| Oksidering nommers | 2, 3, 4, 6 |
| Elektronkonfigurasie | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d7 6s2 |
| Digtheid [g/cm3] | 22.5 |
| Staat | Vaste stof |
| Smeltpunt [°C] | 2447 |
| Kookpunt [°C] | 4500 |
| Atoomradius [pm] | 180 |
| Covalent radius [pm] | 137 |
| Termiese geleidingsvermoë [W m-1K-1] | 147 |
| Hitte kapasiteit [J K-1g-1] | 0.13 |
| Ontdekking | 1803 |
| Hardheid [Mohs-skaal] | 6.5 |
| Vickers se hardheid [MPa] | 1760 |
| Brinell-hardheid [MPa] | 1670 |
| Young's modulus [GPa] | 528 |
| Elektriese geleiding [S m-1] | 2.1 · 107 |
| Shear modulus [GPa] | 210 |
| 1ste ionisasie-energie [eV] | 9.1 |
| Stabiele isotope | 2 |
| Onstabiele isotope | 23 |