Antimony is a brittle metalloid used in flame-retardant systems, alloys, and specialised semiconductor materials.
Atomic number
51
Category
Metalloid
Period
5
Group
15
State
Solid
Fun facts about Antimony
Antimony compounds can work synergistically with halogenated flame retardants.
Adding antimony can harden lead alloys.
Stibnite is its principal sulfide ore.
Common uses of Antimony
Flame-retardant formulations
Lead-antimony alloys
Semiconductor devices
Where Antimony sits in the periodic table
Antimony is classified as a metalloid in period 5 and group 15 of the periodic table. Under the conditions represented in this reference, its state is solid.
Quick chemistry revision
For quick revision, pair the symbol Sb with atomic number 51 and the listed atomic mass 121.76. The summary, facts, and uses above keep those element properties together in one reference.