Antimon

51
Sb
Gruppe
15
Periode
5
Blok
p
Protons
Electrons
Neutrons
51
51
71
General Properties
Atomnummer
51
Atommasse
121,76
Mass Number
122
Kategori
Halvmetaller
Farve
Silver
Radioactive
Nej
From the Greek word anti plus monos - a metal not found alone
Krystalstruktur
Simpel Trigonal
History
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 i hver skal
2, 8, 18, 18, 5
Elektronkonfiguration
[Kr] 4d10 5s2 5p3
Sb
Antimony is a poor conductor of heat and electricity
Physical Properties
Tilstandsform
Fast stof
Massefylde
6,685 g/cm3
Smeltepunkt
903,78 K | 630,63 °C | 1167,13 °F
Kogepunkt
1860,15 K | 1587 °C | 2888,6 °F
Smeltevarme
19,7 kJ/mol
Fordampningsvarme
68 kJ/mol
Varmefylde
0,207 J/g·K
Abundance in Earth's crust
0,00002%
Abundance in Universe
4×10-8%
Ultrapure
Billede akkrediteringer: Images-of-elements
Ultrapure metallic antimony piece
CAS Number
7440-36-0
PubChem CID Number
5354495
Atomic Properties
Atomradius
140 pm
Kovalent radius
139 pm
Elektronegativitet
2,05 (Paulings skala)
Ionization Potential
8,6084 eV
Atomic Volume
18,22 cm3/mol
Varmeledningsevne
0,243 W/cm·K
Oxidationstrin
-3, 3, 5
Applications
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
Stable Isotopes
121Sb, 123Sb
Unstable Isotopes
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