Antimony

Metalloids · Group 15 · Period 5

Atomic properties

Atomic number	51
Symbol	Sb
Standard atomic weight	121.76
Classification	Metalloids
Group	15
Period	5
Block	p-block
Electron configuration	[Kr] 4d10 5s2 5p3
Electronegativity (Pauling)	2.05
Common oxidation states	+5, +3, -3

Physical properties

Phase at 20 °C	Solid
Density	6.685 g/cm³
Melting point	630.63 °C
Boiling point	1587 °C
Discovered	Ancient
CAS number	—

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