All chemical elements

Symbol

Fr

Atomic number

87

Chemical property

Alkali metal

Origin o the name

Francia, the New Latin name for France

Group

1

Period

7

Density (g/cm³)

1.87

Melting point (K)

300

Boiling point (K)

950

Electro-negativity

0.7

Abundance in earth's crust (mg/kg)

0