#87 Francium

Francium is an alkali metal, a member of Group 1 (IA) in the periodic table. The periodic table is a chart that shows how chemical elements are related to each other. Francium may be the rarest element found on the Earth's surface.

Atomic mass:(223.0) amu

Melting point:27.0 C (300.15 K, 80.6 F)

Boiling point: 677.0 C (950.15 K, 1250.6 F)

Density:293 K:Unknown