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Tellurium dioxide (TeO 2) is a solid oxide of tellurium. It is encountered in two different forms, the yellow orthorhombic mineral tellurite, β-TeO 2, and the synthetic, colourless tetragonal (paratellurite), α-TeO 2. [2] Most of the information regarding reaction chemistry has been obtained in studies involving paratellurite, α-TeO 2. [3]
Tellurium dioxide is formed by heating tellurium in air, where it burns with a blue flame. [2] Tellurium trioxide, β-TeO 3, is obtained by thermal decomposition of Te(OH) 6. The other two forms of trioxide reported in the literature, the α- and γ- forms, were found not to be true oxides of tellurium in the +6 oxidation state, but a mixture ...
3 in vacuum, disproportionating into tellurium dioxide, TeO 2 and elemental tellurium upon heating. [48] [49] Since then, however, existence in the solid phase is doubted and in dispute, although it is known as a vapor fragment; the black solid may be merely an equimolar mixture of elemental tellurium and tellurium dioxide. [50]
Tellurium oxide may refer to: Tellurium monoxide, TeO; Tellurium dioxide, TeO 2; Tellurium trioxide, TeO 3 This page was last edited on 13 May 2022 ...
The telluride oxides or oxytellurides are double salts that contain both telluride and oxide anions (Te 2− and O 2−).They are in the class of mixed anion compounds.. Compounds that can be mistakenly called "telluride oxides" are tellurium dioxide and tellurite.
Tellurite is a rare oxide mineral composed of tellurium dioxide (Te O 2).. It occurs as prismatic to acicular transparent yellow to white orthorhombic crystals. It occurs in the oxidation zone of mineral deposits in association with native tellurium, emmonsite and other tellurium minerals.
Tellurite is a oxyanion of tellurium with the formula TeO 2− 3. It is the ion of tellurous acid, and is chemically related to tellurium dioxide (TeO 2), whose mineral appearance also bears the name tellurite. Tellurites are typically colorless or white salts, which in some ways are comparable to sulfite. [3]
Tellurium dioxide; Tellurium trioxide; Lead carbide – originally thought to be a pure compound, but now considered more likely to be a mixture of carbon and lead; Iodine pentabromide – originally thought to be a pure compound, but now considered to probably be a mixture of iodine monobromide and excess unreacted bromine