tellurous

[tel-yer-uhs, te-loor-uhs]

adjective

Chemistry.

1. containing tetravalent tellurium.

tellurous

/ tɛˈlʊərəs, ˈtɛljʊrəs /

adjective

1. of or containing tellurium, esp in a low valence state

Word History and Origins

Origin of tellurous¹

First recorded in 1835–45; tellur(ium) + -ous

Example Sentences

Tellurous Acid, TeO2. in the oxidizing flame.Dissolves to a clear colorless glass which, when treated on charcoal, becomes grey and dull from particles of reduced tellurium.

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With carbonate of soda, tellurous acid fuses upon platinum wire to a clear colorless bead, which is white when cold.

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If tellurous acid, finely powdered charcoal, and carbonate of soda are mixed together, and the mixture be well ignited in a closed tube, until fusion is effected, and a few drops of boiled water are brought into the tube, they are colored purple, indicating the presence of tellur-sodium.

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Heated still more strongly, it becomes milk-white, oxygen is expelled, and it is converted into tellurous acid.

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When heated upon charcoal in the oxidation flame, it melts, and is reduced to the metallic state, but volatilizes and a sublimate of white tellurous acid is formed upon the charcoal.

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