Antimon

51
Sb
Grupp
15
Period
5
Block
p
Protoner
Electrons
Neutroner
51
51
71
Generella Egenskaper
Atomnummer
51
Atommassa
121,76
Mass Number
122
Kategori
Metalloid
Färg
Silver
Radioaktiv
Nej
From the Greek word anti plus monos - a metal not found alone
Kristallstruktur
Enkelt trigonal
Historia
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 skal
2, 8, 18, 18, 5
Elektronkonfiguration
[Kr] 4d10 5s2 5p3
Sb
Antimony is a poor conductor of heat and electricity
Fysikaliska Egenskaper
Aggregationstillstånd
Fast
Densitet
6,685 g/cm3
Smältpunkt
903,78 K | 630,63 °C | 1167,13 °F
Kokpunkt
1860,15 K | 1587 °C | 2888,6 °F
Smältvärme
19,7 kJ/mol
Ångbildningsvärme
68 kJ/mol
Specifik värmekapacitet
0,207 J/g·K
Abundance in Earth's crust
0,00002%
Abundance in Universe
4×10-8%
Ultrapure
Bildkrediter: Images-of-elements
Ultrapure metallic antimony piece
CAS Number
7440-36-0
PubChem CID Number
5354495
Atomära Egenskaper
Atomradie
140 pm
Kovalent radie
139 pm
Elektronegativitet
2,05 (Paulingskalan)
Jonisationspotential
8,6084 eV
Molvolym
18,22 cm3/mol
Värmeledningsförmåga
0,243 W/cm·K
Oxidationstillstånd
-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
Stabila isotoper
121Sb, 123Sb
Instabila 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