|
|
Pr
in WebElements
in X-Ray info
|
Pr, 59
praseodymium (English)
praséodyme, m. (French)
Praseodym, n. (German)
prazeodim (Russian)
praseodym (Swedish)
|
|
|
| Symbol, number | Pr, 59 (metal) |
|---|
| Weight | 140.90765 |
|---|
| In Nature | |
|---|
| Discovered | 1885, by C. Auer von Welsbach (Austria) |
|---|
| Density [kg/m3] | 6773 [293 K] (solid) |
| Molar volume | 20.80 cm3 |
|---|
| Melting Temperature | 1204 K (931 °C) Enthalpy: 332.6 kJ/mol |
|---|
| Boiling Temperature | 3785 K (3512 °C) Enthalpy: 11.3 kJ/mol |
|---|
| Electrical resistance | 68E-8 [298 K] Wm |
|---|
| Thermal | Conductivity: 12.5 [300 K] W/Km Expansion: 6.79E-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 |
| Pr |
|
|