Atomic Number: 87

Name: Francium

Atomic symbol: Fr

Atomic Weight: 223.0197

Electron configuration: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶7s¹

Pauling electronegativity: 0.7

Melting Point: 27^oC

Boiling Point: 677^oC

Ionic radius: 1.80 angstroms (+1)