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Atomic symbol - La
Atomic weight - 138.9055
Atomic number - 57
Electron configuration - 2-8-18-18-9-2
Oxidation states - +3
State of matter - solid
Heavy metal-britle
Discovered in 1839 by Carl Gustaf Mosander
Boils at 3454 .C, melts at 920 .C

Lanthanum is ductile, malleable, silvery-white metal in the lanthanide series.
Lanthanum has three allotropic forms. At -268 .C it becomes a superconductor.

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