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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
STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.