Name: antimony
Symbol: Sb
Atomic number: 51
Atomic weight: 121.760 (1) g
Group in periodic table: 15
Group name: Pnictogen
Period in periodic table: 5
Block in periodic table: p-block
CAS registry ID: 7440-36-0
Metallic antimony is an extremely brittle metal of a flaky, crystalline texture. It is bluish white and has a metallic lustre. It is not acted on by air at room temperature, but burns brilliantly when heated with the formation of white fumes. It is a poor conductor of heat and electricity.
Antimony and its compounds are toxic. It is found mostly with other minerals and in stibnite.