Antimony was discovered by Known since ancient times at no data in not known.
Origin of name: from the Greek words "anti + monos" meaning "not alone".
Atomic Number: 51
Atomic Weight: 118.710
Melting Point: 505.08 K (231.93°C or 449.47°F)
Boiling Point: 2875 K (2602°C or 4715°F)
Density: 7.287 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 5 Group Number: 14 Group Name: none