Ra
Radium
88
Atomic Number: 88
Atomic mass: [226]
Ionization energy: 509
Electronaffinity:
Covalent radius:
Calculated radius:
Empirical radius: 215
Vanderwaals radius:
Electronegativity: 0.9
Density: 5
Oxidation states: 2
Melting point: 973
Boiling point: 2010
Electron configuration: [Rn] 7s2
Element group: 2
Element period: 7

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