Barium (Ba)

A fascinating alkaline earth metal element.

Barium is element 56 on the periodic table.

Element properties

Atomic number

56

Symbol

Ba

Atomic mass

137.33 u

Category

Alkaline Earth Metal

Period

6

Group

2

Block

s

State

Solid

Electron configuration

[Xe] 6s2

Electronegativity (Pauling)

0.89

Density

3.51 g/cm³

Melting point

727 °C

Boiling point

1897 °C