Kositar
50
Sn
Skupina
14
Perioda
5
Blok
p
Protoni
Elektroni
Neutroni
50
50
69
Opća svojstva
Atomski broj
50
Relativna atomska masa
118,71
Maseni broj
119
Kategorija
Slabi metali
Boja
Srebrna
Radioaktivan
Ne
Od grčke riječi kassíteros; simbol od latinske riječi za kositar koja glasi stannum
Kristalna struktura
Prostorno centrirana tetragonska
Povijest
Tin was first smelted in combination with copper around 3500 BC to produce bronze.
The oldest artifacts date from around 2000 BC.
Cassiterite, the tin oxide form of tin, was most likely the original source of tin in ancient times.
British scientist Robert Boyle published a description of his experiments on the oxidation of tin in 1673.
The oldest artifacts date from around 2000 BC.
Cassiterite, the tin oxide form of tin, was most likely the original source of tin in ancient times.
British scientist Robert Boyle published a description of his experiments on the oxidation of tin in 1673.
Elektrona po ljusci
2, 8, 18, 18, 4
Elektronska konfiguracija
[Kr] 4d10 5s2 5p2
When a bar of tin is bent, a crackling sound known as the tin cry can be heard
Fizikalna svojstva
Agregacijsko stanje
Čvrsto
Gustoća
7,287 g/cm3
Talište
505,08 K | 231,93 °C | 449,47 °F
Vrelište
2875,15 K | 2602 °C | 4715,6 °F
Toplina taljenja
7 kJ/mol
Toplina isparavanja
290 kJ/mol
Specifični toplinski kapacitet
0,228 J/g·K
Zastupljenost u Zemljinoj kori
0,00022%
Zastupljenost u svemiru
4×10-7%
CAS broj
7440-31-5
PubChem CID broj
5352426
Atomska svojstva
Atomski radijus
140 pm
Kovalentni radijus
139 pm
Elektronegativnost
1,96 (Paulingova ljestvica)
Potencijal ionizacije
7,3439 eV
Atomski volumen
16,3 cm3/mol
Toplinska vodljivost
0,666 W/cm·K
Stanja oksidacije
-4, 2, 4
Primjene
Tin is used as a coating on the surface of other metals to prevent corrosion.
It has long been used as a solder in the form of an alloy with lead.
Tin salts sprayed onto glass are used to produce electrically conductive coatings.
Tin chloride is used as a mordant in dyeing textiles and for increasing the weight of silk.
It has long been used as a solder in the form of an alloy with lead.
Tin salts sprayed onto glass are used to produce electrically conductive coatings.
Tin chloride is used as a mordant in dyeing textiles and for increasing the weight of silk.
Tin is considered to be non-toxic but most tin salts are toxic
Izotopi
Stabilni izotopi
112Sn, 114Sn, 115Sn, 116Sn, 117Sn, 118Sn, 119Sn, 120Sn, 122Sn, 124SnNestabilni izotopi
99Sn, 100Sn, 101Sn, 102Sn, 103Sn, 104Sn, 105Sn, 106Sn, 107Sn, 108Sn, 109Sn, 110Sn, 111Sn, 113Sn, 121Sn, 123Sn, 125Sn, 126Sn, 127Sn, 128Sn, 129Sn, 130Sn, 131Sn, 132Sn, 133Sn, 134Sn, 135Sn, 136Sn, 137Sn