Strontium (Sr)

A fascinating alkaline earth metal element.

Strontium is element 38 on the periodic table.

Element properties

Atomic number

38

Symbol

Sr

Atomic mass

87.62 u

Category

Alkaline Earth Metal

Period

5

Group

2

Block

s

State

Solid

Electron configuration

[Kr] 5s2

Electronegativity (Pauling)

0.95

Density

2.63 g/cm³

Melting point

777 °C

Boiling point

1382 °C