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Hydrogen telluride is the inorganic compound with the formula H 2 Te.A hydrogen chalcogenide and the simplest hydride of tellurium, it is a colorless gas.Although unstable in ambient air, the gas can exist long enough to be readily detected by the odour of rotting garlic at extremely low concentrations; or by the revolting odour of rotting leeks at somewhat higher concentrations.
The anhydrous acid is stable in air at 100 °C but above this it dehydrates to form polymetatelluric acid, a white hygroscopic powder (approximate composition (H 2 TeO 4) 10), and allotelluric acid, an acid syrup of unknown structure (approximate composition 3·H 2 TeO 4 ·4H 2 O). [6] [3] Typical salts of the acid contains the anions [Te(O)(OH ...
hydrosulfuric acid: H 2 S: 7.0: hydrogen selenide selenium hydride (selane) hydroselenic acid: H 2 Se: 3.89: hydrogen telluride tellurium hydride (tellane) hydrotelluric acid: H 2 Te: 2.6: hydrogen polonide polonium hydride (polane) hydropolonic acid: H 2 Po? hydrogen livermoride livermorium hydride (livermorane) hydrolivermoric acid: H 2 Lv?
The telluride ion is the anion Te 2− and its derivatives. It is analogous to the other chalcogenide anions, the lighter O 2−, S 2−, and Se 2−, and the heavier Po 2−. [1] In principle, Te 2− is formed by the two-e − reduction of tellurium. The redox potential is −1.14 V. [2] Te(s) + 2 e − ↔ Te 2−
Na 2 Te, like many related compounds with the formula M 2 X, adopts the antifluorite structure. Thus, in solid Na 2 Te each Te 2− ion is surrounded by eight Na + ions and each Na + ion is surrounded by four Te 2− ions. [3] Simple salts of the type M 2 X, where X is a monatomic anion, are not typically soluble in any solvent because they ...
In contrast to the analogous compound selenous acid, tellurous acid is only metastable. Most tellurite salts contain the TeO 2− 3 ion. Oxidation of its aqueous solution with hydrogen peroxide gives the tellurate ion. It is usually prepared as an aqueous solution where it acts as a weak acid. [1] [3] H 2 TeO 3 + H 2 O ⇌ H 3 O + + HTeO − 3 ...
In this case, a three-fold rotoinversion with axis in the 111 direction is centred on the point (0, 0, 0) (where there is no ion) and can also be centred on the B ion at (1/2, 1/2, 1/2), and in fact every B ion is the centre of a three-fold rotoinversion (point group D 3d). Under this space group the two A positions are equivalent.
2 O 2− 7, trisulfate, S 3 O 2− 10 and pentasulfate S 5 O 2− 16 ions all contain 4-coordinate sulfur and are built from corner-shared {SO 4} tetrahedra. [14] Selenate compounds include many examples of four coordinate selenium, principally the tetrahedral SeO 2− 4 ion and the pyroselenate ion, Se 2 O 2− 7 which has a similar structure ...