La
Lanthanum
57
Atomic Number: 57
Atomic mass: 138.905477
Ionization energy: 538
Electronaffinity: -48
Covalent radius: 169
Calculated radius:
Empirical radius: 195
Vanderwaals radius:
Electronegativity: 1.1
Density: 6.15
Oxidation states: 2, 3
Melting point: 1193
Boiling point: 3737
Electron configuration: [Xe] 5d1 6s2
Element group: 4
Element period: 8

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