Antimoni

Kemiallinen merkki: Sb
Järjestysluku: 51
Kategoria: puolimetallit
Ryhmä: 15
Jakso: 5
Lohko: p
Moolimassa: 121,760 g/mol
Elektronia kuorilla: 2, 8, 18, 18, 5
CAS-numero: 7440-36-0
Olomuoto: kiinteä
Tiheys: 6,697 kg/l (lähellä huoneenlämpöä)
Sulamispiste: 903,78 K (630,63 °C, 1167,13 °F)
Kiehumispiste: 1860 K (1587 °C, 2889 °F)
Kiderakenne: rhombohedral
Hapetusluvut: -3, 3, 5
Elektronegatiivisuus: 2,05 (Pauling-asteikko)
Nimen alkuperä: antimonium
Nimen tarkoitus: the Latin word for 'monk-killer', as the early alchemists were monks, and antimony is poisonous
Faktoja:
- the symbol Sb comes from the Latin word Stibium which means 'mark'
- has four allotropic forms
- the stable form of antimony is a blue-white metalloid, and the yellow and the black antimony are unstable non-metals
- is used in flame-proofing, paints, ceramics, enamels, a wide variety of alloys, electronics, and rubber
- is a silvery white, brittle, fusible, crystalline solid that exhibits poor electrical and heat conductivity properties and vaporizes a
- antimony and many of its compounds are toxic - clinically, antimony poisoning is very similar to arsenic poisoning
- was used in Biblical times as medicine, and in Islamic/Pre-Islamic times as a cosmetic