63 Eu

Europium

Lanthanide
Atomic number63
CategoryLanthanide
Atomic mass151.96
Electron configuration[Xe]4f⁷ 6s²
Oxidation states+2, +3
Electronegativity1.2
Melting point826 °C
Boiling point1,529 °C
Density5.24 g/cm³
Crystal structureBody-centred cubic
Period6
Blockf
Discovered1,901
Crustal abundance2 ppm

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