All chemical elements

Symbol

Ba

Atomic number

56

Chemical property

Alkaline earth metal

Origin o the name

the Greek barys, 'heavy'

Group

2

Period

6

Atomic weight (u)

137.327

Atomic weight uncertainty (u)

0.007

Density (g/cm³)

3.594

Melting point (K)

1000

Boiling point (K)

2170

Heat capacity (J/(g·K))

0.204

Electro-negativity

0.89

Abundance in earth's crust (mg/kg)

425