Antimon

51
Sb
Gruppe
15
Periode
5
Blokk
p
Protoner
Elektroner
Nøytroner
51
51
71
Generelle egenskaper
Atomnummer
51
Atomvekt
121,76
Massetall
122
Kategori
Halvmetaller
Farge
Sølv
Radioaktiv
Nei
From the Greek word anti plus monos - a metal not found alone
Krystallstruktur
Simple Trigonal
Historie
One of antimony's minerals, stibnite was recognized in predynastic Egypt as an eye cosmetic as early as about 3100 BC.

The first European description of a procedure for isolating antimony is in the book De la pirotechnia of 1540 by Vannoccio Biringuccio.

The first natural occurrence of pure antimony in the Earth's crust was described by the Swedish scientist and local mine district engineer Anton von Swab in 1783.
Elektroner per energinivå
2, 8, 18, 18, 5
Elektronkonfigurasjon
[Kr] 4d10 5s2 5p3
Sb
Antimony is a poor conductor of heat and electricity
Fysikalske egenskaper
Fase
Fast stoff
Tetthet
6,685 g/cm3
Smeltepunkt
903,78 K | 630,63 °C | 1167,13 °F
Kokepunkt
1860,15 K | 1587 °C | 2888,6 °F
Smeltevarme
19,7 kJ/mol
Fordampningsvarme
68 kJ/mol
Spesifikk varmekapasitet
0,207 J/g·K
Forekomst i jordskorpa
0,00002%
Forekomst i universet
4×10-8%
Ultrapure
Bildekreditter: Images-of-elements
Ultrapure metallic antimony piece
CAS Number
7440-36-0
PubChem CID Number
5354495
Atomegenskaper
Atomradius
140 pm
Kovalent radius
139 pm
Elektronegativitet
2,05 (Pauling-skalaen)
Ioniseringsenergi
8,6084 eV
Molart volum
18,22 cm3/mol
Termisk ledningsevne
0,243 W/cm·K
Oksidasjonstilstander
-3, 3, 5
Bruksområder
The largest applications for metallic antimony are as alloying material for lead and tin and for lead antimony plates in lead-acid batteries.

Alloying lead and tin with antimony improves the properties of the alloys which are used in solders, bullets and plain bearings.

Antimony trioxide is used as a flame retardant in adhesives, plastics, rubber and textiles.
Antimony and many of its compounds are toxic
Isotoper
Stabile isotoper
121Sb, 123Sb
Ustabile isotoper
103Sb, 104Sb, 105Sb, 106Sb, 107Sb, 108Sb, 109Sb, 110Sb, 111Sb, 112Sb, 113Sb, 114Sb, 115Sb, 116Sb, 117Sb, 118Sb, 119Sb, 120Sb, 122Sb, 124Sb, 125Sb, 126Sb, 127Sb, 128Sb, 129Sb, 130Sb, 131Sb, 132Sb, 133Sb, 134Sb, 135Sb, 136Sb, 137Sb, 138Sb, 139Sb