Symbol:Te
Melting point:449.5'C
Electron configuration:[Kr]4d105s25p4
Atomic number:52
Atomic mass:127.60.03u
OreCommon NameFormula
OxideTelluriteTeO2
TellurideTetradymiteBi2[TeS]3
HessiteAg2Te
Sylvanite[Ag,Au]2Te
Calaverite[Ag,Au]2Te
Petzite[Ag,Au]2Te
SulphotellurideNagyagitePb5Au[TeSb]4S5

Tellurium

Tellurium occurs in small quantities with Tellurium and pyrite ores. It is also found in combination with bismuth, lead, gold and silver. Tellurium is added to copper to improve the machinability of the copper alloys. It is also used as secondary vulcanizing agent. It is used as catalyst. Tellurium is used as photocopiers. It is used as data-storage medium in computers. Selenium and tellurium are used in solar panels. Photo-thermal cells and photovoltaic cells also contain alloys of selenium and tellurium. The major producers of tellurium are USA, Belgium, Japan, Peru, Russia and Canada. The gold bearing tellurides are very important as gold bearing ores. They occur in veins and replacement deposits. In the upper parts of the veins the tellurides are decomposed and removed in solutions. Tellurium oxide is also formed near these veins.