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Lanthanum
57
La
138.906
Atomic Number 57
Atomic Weight 138.906
Electron Config. 2-2-6-2-6-10-2-6-10-0-2-6-1-0-2
Electron configuration order: 1s-2s-2p-3s-3p-3d-4s-4p-4d-4f-5s-5p-5d-5f-6s-6p-6d-7s

Mechanical Properties Conditions
Phase Temp. (K) Pressure (Pa)
Density 6150 kg/m3 Solid  298.15 
Modulus of Elasticity 68.948 GPa Solid  0   
Poisson Ratio 0.28 Solid     
Thermal Expansion Coefficient 1.210 /K Solid  298.15  

Electrical Properties Conditions
Temp. (K) Note
Electrical Resistivity 5.700 W-m 273.15-289.15  

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 1193.15 K   101325 
Boiling Temperature 3728.15 K   101325 
Critical Temperature 10500 K    
Fusion Enthalpy 44.6 J/g 101325 
Heat Capacity 195 J/kg-K 298.149993896 100000 
Thermal Conductivity 13.4 W/m-K 300 101325 
 
Glossary