51Sb
Element 51
Antimony
Metalloids
Antimony is a chemical element with symbol Sb (from Latin:stibium) and atomic number 51.
Key data
- Atomic number
- 51
- Atomic mass
- 121.760 u
- Group / Period
- 15 / 5
- Block
- p-block
- Phase at STP
- Solid
- Density
- 6.697 g/cm³
- Melting point
- 630.6 °C
- Boiling point
- 1634.8 °C
- Electron configuration
- [Kr] 4d10 5s2 5p3
Common uses
- •Flame retardants
- •Lead-acid batteries
- •Cosmetics history
Discovery
Year: Known since antiquity
Discovered by: unknown, before 3000 BC
Frequently asked questions
What is the atomic number of Antimony?
Antimony has atomic number 51. Its symbol is Sb and its atomic mass is 121.76 u.
What category of element is Antimony?
Antimony is classified as metalloids. It sits in group 15, period 5 of the periodic table.
What is Antimony used for?
Common uses of Antimony include: Flame retardants, Lead-acid batteries, Cosmetics history.
When was Antimony discovered?
Antimony has been known since antiquity.
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