Beryllium (Be)

A fascinating alkaline earth metal element.

Beryllium is element 4 on the periodic table.

Element properties

Atomic number

4

Symbol

Be

Atomic mass

9.0122 u

Category

Alkaline Earth Metal

Period

2

Group

2

Block

s

State

Solid

Electron configuration

[He] 2s2

Electronegativity (Pauling)

1.57

Density

1.85 g/cm³

Melting point

1287 °C

Boiling point

2469 °C