Fr
Francium
87
Atomic Number: 87
Atomic mass: [223]
Ionization energy: 380
Electronaffinity:
Covalent radius:
Calculated radius:
Empirical radius:
Vanderwaals radius:
Electronegativity: 0.7
Density:
Oxidation states: 1
Melting point: 300
Boiling point:
Electron configuration: [Rn] 7s1
Element group: 1
Element period: 7

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