All chemical elements

Symbol

Sb

Atomic number

51

Chemical property

Metalloid

Origin o the name

uncertain: perhaps from the Greek anti, 'against', and monos, 'alone', or the Old French antimoine, 'Monk's bane' (stibium in Latin)

Group

15

Period

5

Atomic weight (u)

121.76

Atomic weight uncertainty (u)

0.001

Density (g/cm³)

6.685

Melting point (K)

903.78

Boiling point (K)

1860

Heat capacity (J/(g·K))

0.207

Electro-negativity

2.05

Abundance in earth's crust (mg/kg)

0.2