Ba
Barium
56
Atomic Number: 56
Atomic mass: 137.3277
Ionization energy: 503
Electronaffinity: -14
Covalent radius: 198
Calculated radius: 253
Empirical radius: 215
Vanderwaals radius:
Electronegativity: 0.89
Density: 3.51
Oxidation states: 2
Melting point: 1000
Boiling point: 2143
Electron configuration: [Xe] 6s2
Element group: 2
Element period: 6

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