|
|
Ir
in WebElements
in X-Ray info
|
Ir, 77
iridium (English)
iridium, m. (French)
Iridium, n. (German)
iridij (Russian)
iridio (Spanish)
iridium (Swedish)
|
|
|
| Symbol, number | Ir, 77 (metal), Group: 9; 8B |
|---|
| Weight | 192.22 |
|---|
| In Nature | |
|---|
| Discovered | 1803, by Smithson Tennant (England) |
|---|
| Density [kg/m3] | 22560 [290 K] (solid) 20000 [2683 K] (liquid) |
| Molar volume | 8.57 cm3 |
|---|
| Melting Temperature | 2683 K (2410 °C) Enthalpy: 563.6 kJ/mol |
|---|
| Boiling Temperature | 4403 K (4130 °C) Enthalpy: 26.4 kJ/mol |
|---|
| Electrical resistance | 5.3E-8 [293 K] Wm |
|---|
| Thermal | Conductivity: 147 [300 K] W/Km Expansion: 6.4E-6 /K |
|---|
| Ionisation [kJ/mol] |
| M--> |
M+--> |
M2+--> |
M3+--> |
M4+--> |
M5+--> |
M6+--> |
M7+--> |
M8+--> |
M9+-->M10+ |
|
|
| Thermodynamics |
| State |
DfH° |
DfG° |
S° |
CpH |
H°298.15-H°0 |
| [kJ/mol] |
[J/Kmol] |
[kJ/mol] |
|
|
|
| Isotopes |
|
Mass |
In nature |
Half-life |
Spin |
m/mN |
NMM |
Decay |
| Ir |
|
|