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HOME > Protocols > Reference Material > Periodic Table > Lanthanum

Lanthanum

Atomic Number: 57

Name: Lanthanum

Atomic symbol: La

Atomic Weight: 138.906

Electron configuration: 1s22s22p63s23p63d104s24p64d105s25p65d16s2

Ionization energies: 538 kJ/mol

Melting Point: 921oC

Boiling Point: 3457oC

Density: 6.1 g/cm3

Ionic radius: 1.39 angstroms (+1), 1.06 angstroms (+3)

Metallic radius: 1.88 angstroms

Previous: Atomic Number 56 - Barium


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