Es
Einsteinium
99
Atomic Number: 99
Atomic mass: [252]
Ionization energy: 619
Electronaffinity:
Covalent radius:
Calculated radius:
Empirical radius:
Vanderwaals radius:
Electronegativity: 1.3
Density:
Oxidation states: 2, 3
Melting point: 1133
Boiling point:
Electron configuration: [Rn] 5f11 7s2
Element group: 14
Element period: 9

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