Antimony (Sb)

A fascinating metalloid element.

Antimony is element 51 on the periodic table.

Element properties

Atomic number

51

Symbol

Sb

Atomic mass

121.76 u

Category

Metalloid

Period

5

Group

15

Block

p

State

Solid

Electron configuration

[Kr] 4d10 5s2 5p3

Electronegativity (Pauling)

2.05

Density

6.697 g/cm³

Melting point

630.6 °C

Boiling point

1587 °C