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Lanthanum is silvery-white, soft, ductile, and malleable. It oxidizes rapidly when exposed to air and its reaction with water is temperature dependant. It is one of the most reactive of the rare earth metals. The metal is superconducting at approximately 6K.
|Property Name||Property Value||Property Name||Property Value|
|CAS #||7493-91-0||Covalent Radius||1.69Angstroms|
|Electrical Resistivity @ 298°C||79.8µΩ-cm|
|Melting Point||920°C||Crystal Structure||Hexagonal|
|Density||6.17g/cm3||Thermal Neutron Cross Section||8.9barns/atom|
|Themal Conductivity||0.033cal/cm2/cm/s/°C||Magnetic Moment||0.49Bohr magnetons|
|Specific Heat @ 25°C||0.045cal/g°C||Magnetic Susceptibility||101x10-6emu/mol|
|Heat of Fusion||1.5k-cal/g-atom||Tensile Strength||18,900psi|
|Heat of Vaporization||96k-cal/g-atom||Yield Strength||18,200psi|
|Atomic Volume||22.5W/D||Standard Electrode Potential||+2.4volts|
|First Ionization Energy||129K-cal/g-mole|