Th
Thorium
90
Atomic Number: 90
Atomic mass: 232.038062
Ionization energy: 587
Electronaffinity:
Covalent radius:
Calculated radius:
Empirical radius: 180
Vanderwaals radius:
Electronegativity: 1.3
Density: 11.72
Oxidation states: 2, 3, 4
Melting point: 2023
Boiling point: 5093
Electron configuration: [Rn] 6d2 7s2
Element group: 5
Element period: 9

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