Antimon

51
Sb
Gruppe
15
Periode
5
Block
p
Protonen
Elektronen
Neutronen
51
51
71
Generelle Eigenschaften
Ordnungszahl
51
Atommasse
121,76
Massenzahl
122
Kategorie
Halbmetalle
Farbe
Silber
Radioaktiv
Nein
From the Greek word anti plus monos - a metal not found alone
Kristallstruktur
Einfach Trigonal
Geschichte
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.
Elektronen pro Schale
2, 8, 18, 18, 5
Elektronenkonfiguration
[Kr] 4d10 5s2 5p3
Sb
Antimony is a poor conductor of heat and electricity
Physikalische Eigenschaften
Aggregatzustand
Fest
Dichte
6,685 g/cm3
Schmelzpunkt
903,78 K | 630,63 °C | 1167,13 °F
Siedepunkt
1860,15 K | 1587 °C | 2888,6 °F
Schmelzwärme
19,7 kJ/mol
Verdampfungswärme
68 kJ/mol
Spezifische Wärmekapazität
0,207 J/g·K
Häufigkeit in der Erdkruste
0,00002%
Häufigkeit im Universum
4×10-8%
Ultrapure
Danksagungen für Bilder: Images-of-elements
Ultrapure metallic antimony piece
CAS-Nummer
7440-36-0
PubChem CID Number
5354495
Atomeigenschaften
Atomradius
140 pm
Kovalenter Radius
139 pm
Elektronegativität
2,05 (Pauling-Skala)
Ionisierungsenergie
8,6084 eV
Molares Volumen
18,22 cm3/mol
Wärmeleitfähigkeit
0,243 W/cm·K
Oxidationszustände
-3, 3, 5
Anwendung
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
Isotope
Stabile Isotope
121Sb, 123Sb
Instabile Isotope
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