87

Radioactive

Fr

Francium

(223)

Alkali Metal
Solid

Discovery

Perey, Marguerite (1939)

Etymology

French

Meaning

France

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Body-centered cubic

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

27.0 °C

300.15 K

Boiling point

  (at 101.325 kPa)

-62.0 °C

211.15 K

Electronegativity

0.00