Antimony (
IPA:
'æntəməʊni) is a
chemical element in the
periodic table that has the symbol
Sb (
Latin:
stibium, meaning "mark") and
atomic number 51. A
metalloid, antimony has four
allotropic forms. The stable form of antimony is a blue-white metalloid. Yellow and black antimony are unstable non-metals. Antimony is used in flame-proofing,
paints,
ceramics,
enamels, a wide variety of
alloys,
electronics, and
rubber.