All chemical elements

Symbol

Ac

Atomic number

89

Chemical property

Actinide

Origin o the name

the Greek aktis, 'ray'

Group

3

Period

7

Density (g/cm³)

10.07

Melting point (K)

1323

Boiling point (K)

3471

Heat capacity (J/(g·K))

0.12

Electro-negativity

1.1

Abundance in earth's crust (mg/kg)

0