4

Be

Beryllium

9.0122

Alkaline Earth
Solid

Discovery

Vauquelin, Nicholas Louis (1797)

Etymology

Sanskrit via Latin and Greek

Meaning

The gemstone beryl

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Hexagonal close-packed

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

1278.0 °C

1551.15 K

Boiling point

  (at 101.325 kPa)

2970.0 °C

3243.15 K

Density

  (at 21 °C and 101.325 kPa)

1.85 g/cm3

Electronegativity

1.57