Fr

Francium

Z 87 223.0 g/molAlkali Metal Radioactive

Overview Atomic Properties Thermodynamics Electromagnetism Isotopes

Group

1

Period

7

Block

s

Occurrence

From decay

Biological Role

---

History

1939 (discovery, isolation)

Marguerite Perey

Named By

Marguerite Perey

Latin Name

Francium

Abundance

Universe

x

Sun

x

Meteorites

x

Earth's crust

x

Oceans

x

Humans

x