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Tellurium has been used to vulcanise rubber, to tint glass and ceramics, in solar cells, in rewritable CDs and DVDs and as a catalyst in oil refining. It can be doped with silver, gold, copper or tin in semiconductor applications.
- What is the most common form of tellurium?
- How is tellurium used in rubber?
- Is tellurium used in ceramics?
- What bonds are in tellurium?
- Where is tellurium mined?
- What are common uses for tellurium?
- How many isotopes does tellurium have?
- Where do you find polonium?
- Is tellurium flammable?
- How is tellurium used in blasting caps?
- What is copper telluride used for?
What is the most common form of tellurium?
Tellurium belongs to the chalcogen (group 16) family of elements on the periodic table, which also includes oxygen, sulfur, selenium and polonium: Tellurium and selenium compounds are similar. Tellurium exhibits the oxidation states −2, +2, +4 and +6, with +4 being most common.
How is tellurium used in rubber?
When added to rubber, tellurium speeds up the curing process and makes the product less susceptible to ageing and less likely to be affected by oil, which softens normal rubber.
Is tellurium used in ceramics?
Tellurium dioxide is used to fabricate fiber optics and pigments and to color ceramics and glass.
What bonds are in tellurium?
Tellurium reacts with fluorine, F2, and burns to form the hexafluoride tellurium(VI) fluoride. Carefully done, tellurium reacts with fluorine, F2, mixed with nitrogen gas at 0°C to form the tetrafluoride tellurium(IV) fluoride.
Where is tellurium mined?
Significant tellurium quantities are recovered as a primary ore from only two mining districts in the world: the adjacent epithermal gold-tellurium vein deposits at Dashuigou and Majiagou in southwestern China and the epithermal-like mineralization at the Kankberg deposit, Skellefte VMS district, Sweden.
What are common uses for tellurium?
Tellurium has been used to vulcanise rubber, to tint glass and ceramics, in solar cells, in rewritable CDs and DVDs and as a catalyst in oil refining. It can be doped with silver, gold, copper or tin in semiconductor applications.
How many isotopes does tellurium have?
Naturally occurring tellurium has eight stable isotopes.
Where do you find polonium?
Polonium is a very rare natural element. It is found in uranium ores but it is uneconomical to extract it. It is obtained by bombarding bismuth-209 with neutrons to give bismuth-210, which then decays to form polonium. All the commercially produced polonium in the world is made in Russia.
Is tellurium flammable?
DOT#: UN 7325 ERG Guide #: 133 Hazard Class: 5.1 (Flammable solid) Finely divided Tellurium is a FLAMMABLE SOLID and can form explosive mixtures in air. Use dry chemical powder, sand, graphite or other extinguishing agents appropriate for metal fires.
How is tellurium used in blasting caps?
Tellurium improves the machinability of copper and stainless steel, and its addition to lead decreases the corrosive action of sulfuric acid on lead and improves its strength and hardness. Tellurium is used as a basic ingredient in blasting caps, and is added to cast iron for chill control.
What is copper telluride used for?
Copper Telluride Quantum Dots are charged aqueous soluble nano crystals with narrow emission spectra from 490 nm to 740 nm. Copper Telluride (CaTe) is also used in solar energy and advanced optical applications.
