Tellurium with the symbol Te is a metalloid whose atomic number is 52 and atomic weight is 127u. Let us explore the uses of tellurium.
- The major source of tellurium is coal which contains 2 ppm of Te. It is porous and easily pulverized.
- Te is majorly used in the steel-manufacturing industry.
- Tellurium is used as an alloying agent with copper and stainless steel to enhance their fabrication and machinability. When added to lead, it makes it more resistant to acids and improves its strength and hardness.
- In the ceramic industry, Te and its compounds are used as pigments.
- Tellurium is used to vulcanize rubber, instead of traditional sulphur, to impart greater heat resistance.
- Te is used in semiconductors to exhibit increased electrical conductivity when oriented in specific directions toward light.
- Tellurium is alloyed with lead to improve its strength, chemical resistance, and hardness.
- Te is used as a thermoelectric material and as a catalyst in oil refining.
- In semiconductor applications, tellurium is sometimes doped with tin, copper, silver, and gold.
- Tellurium suboxide is used in the manufacture of rewritable CDs and DVDs.
- Cadmium telluride is used to fabricate optical modulators, memory chips, and solar panels.
- Cs-Te photocathodes are more effective as they provide high durability and quantum efficiency.
- In the telecommunication segment, tellurides and selenides are used to improve the optical refraction of glass.
- As an oxidizer, tellurium mixtures with barium peroxide are used in electric blasting percussion caps.
- Bismuth telluride is used to manufacture numerous thermoelectric devices.
- Tellurium on neutron collision produces Iodine-131, used as a tracer.
Conclusion
Tellurium is an element of the chalcogen family. Te exists in two allotropic forms: a) crystalline tellurium, which is a lustrous, brittle solid and b) amorphous tellurium, which is a brownish-black powder. It is semi-metallic and glows with a greenish-blue flame in air. Tellurium is resistant to reaction by water and HCl, but dissolves in nitric acid.
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