Iridium
| Ir |
Iridium |
Transition Metal |
| Atomic number: |
77 |
|
Atomic weight: |
192.22 |
|
| Shells: |
2,8,18,32,15,2 |
|
Orbitals: |
[Xe] 4f14 5d7 6s2 |
|
| Melting point: |
2410°C |
|
Boiling point: |
4130°C |
|
| Covalent radius: |
1.27 |
Å |
Atomic volume: |
8.54 |
cm³/mol |
| Atomic radius: |
1.87 |
Å |
Ionic radius: |
.63 (+4) |
Å |
| Electronegativity: |
2.20 |
|
Oxidation states: |
2,3,(4),6 |
|
| 1st ionization pot.: |
9.1 |
V |
2nd ionization pot.: |
-- |
V |
| 3rd ionization pot.: |
-- |
V |
Specific heat: |
0.130 |
J/gK |
| Heat of fusion: |
26.10 |
kJ/mol |
Heat of vapor.: |
604.0 |
kJ/mol |
| Thermal conduct.: |
1.47 |
W/cmK |
Electrical conduct.: |
0.197 |
10^6/cm ohm |
| Density: |
22.42 |
g/cm³ |
Valence: |
3 |
|
