Antimoniu

51
Sb
Grupă
15
Perioadă
5
Bloc
p
Protoni
Electroni
Neutroni
51
51
71
Proprietăți Generale
Număr atomic
51
Masă atomică
121,76
Numar de masa
122
Categorie
Metaloid
Culoare
Argint
Radioactive
Nu
Din cuvântul grec anti plus monos, metal negăsit singur
Structură cristalină
Simplu Trigonal
Istoric
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.
Electroni pe nivelul de energie
2, 8, 18, 18, 5
Configurație electronică
[Kr] 4d10 5s2 5p3
Sb
Antimony is a poor conductor of heat and electricity
Proprietăți Fizice
Fază
Solid
Densitate
6,685 g/cm3
Punct de topire
903,78 K | 630,63 °C | 1167,13 °F
Punct de fierbere
1860,15 K | 1587 °C | 2888,6 °F
Energie de fuziune
19,7 kJ/mol
Energie de evaporare
68 kJ/mol
Căldură specifică
0,207 J/g·K
Abundența în scoarța Pământului
0,00002%
Abundența în Univers
4×10-8%
Ultrapure
Credite imagine: Images-of-elements
Ultrapure metallic antimony piece
CAS Number
7440-36-0
PubChem CID Number
5354495
Proprietăți Atomice
Rază atomică
140 pm
Rază de covalență
139 pm
Electronegativitate
2,05 (Scara lui Pauling)
Potențial de ionizare
8,6084 eV
Volum molar
18,22 cm3/mol
Conductivitate termică
0,243 W/cm·K
Număr de oxidare
-3, 3, 5
Aplicații
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
Izotopi
Izotopi stabili
121Sb, 123Sb
Izotopi instabili
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