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La
in WebElements
in X-Ray info
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La, 57
lanthanum (English)
lanthane, m. (French)
Lanthan, n. (German)
lantan (Russian)
lantan (Swedish)
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| Symbol, number | La, 57 (metal), Group: 3; 3B |
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| Weight | 138.9055 |
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| In Nature | |
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| Discovered | 1839, by Carl Gustaf Mosander (Sweden) |
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| Density [kg/m3] | 6145 [298 K] (solid) |
| Molar volume | 22.60 cm3 |
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| Melting Temperature | 1194 K (921 °C) Enthalpy: 399.6 kJ/mol |
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| Boiling Temperature | 3730 K (3457 °C) Enthalpy: 10.04 kJ/mol |
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| Electrical resistance | 57E-8 [298 K] Wm |
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| Thermal | Conductivity: 13.5 [300 K] W/Km Expansion: 4.9E-6 /K |
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| Ionisation [kJ/mol] |
| M--> |
M+--> |
M2+--> |
M3+--> |
M4+--> |
M5+--> |
M6+--> |
M7+--> |
M8+--> |
M9+-->M10+ |
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| Thermodynamics |
| State |
DfH° |
DfG° |
S° |
CpH |
H°298.15-H°0 |
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[J/Kmol] |
[kJ/mol] |
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| Isotopes |
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Mass |
In nature |
Half-life |
Spin |
m/mN |
NMM |
Decay |
| La |
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