56

Ba

Barium

137.33

Alkaline Earth
Solid

Discovery

Davy, Humphry (1808)

Etymology

Greek via modern Latin

Meaning

Heavy

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Body-centered cubic

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

725.0 °C

998.15 K

Boiling point

  (at 101.325 kPa)

678.0 °C

951.15 K

Density

  (at 21 °C and 101.325 kPa)

3.59 g/cm3

Electronegativity

0.89