Ac
Actinium
89
Atomic Number: 89
Atomic mass: [227]
Ionization energy: 499
Electronaffinity:
Covalent radius:
Calculated radius:
Empirical radius: 195
Vanderwaals radius:
Electronegativity: 1.1
Density: 10.07
Oxidation states: 3
Melting point: 1323
Boiling point: 3473
Electron configuration: [Rn] 6d1 7s2
Element group: 4
Element period: 9

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