Gold chalcogenides
Gold chalcogenides are compounds formed between gold and one of the chalcogens, elements from group 16 of the periodic table: oxygen, sulfur, selenium, or tellurium.
* Gold(III) oxide, Au2O3. Decomposes into gold and oxygen above 160 °C, and dissolves in concentrated alkalis to form solutions which probably contain the [Au(OH)4]− ion
* Gold(I) sulfide, Au2S. Formed by passing hydrogen sulfide through solutions of gold(I) compounds.
* Gold(III) sulfide, Au2S3, unstable in the presence of water.
* Gold tellurides: Au2Te3, Au3Te5, and AuTe2 (approximate formulæ) are known as non-stoichiometric compounds. They show metallic conductivity. One telluride of gold is a superconductor at very low temperatures: Au3Te5 (1.62 K).
Aurum SulfidesAurum sulfideBilibinskiteCalaveras_County,_CaliforniaChalcogenCripple_Creek,_ColoradoGlossary of chemical formulaeGoldGold ChalcogenideGold ChalcogenidesGold ChalocogenidesGold chalcogenideGold chalocogenideGold selenideGold tellurideGold telluridesJ. W. SutherlandTelluride,_ColoradoTellurium
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Gold chalcogenides
Gold chalcogenides are compounds formed between gold and one of the chalcogens, elements from group 16 of the periodic table: oxygen, sulfur, selenium, or tellurium.
* Gold(III) oxide, Au2O3. Decomposes into gold and oxygen above 160 °C, and dissolves in concentrated alkalis to form solutions which probably contain the [Au(OH)4]− ion
* Gold(I) sulfide, Au2S. Formed by passing hydrogen sulfide through solutions of gold(I) compounds.
* Gold(III) sulfide, Au2S3, unstable in the presence of water.
* Gold tellurides: Au2Te3, Au3Te5, and AuTe2 (approximate formulæ) are known as non-stoichiometric compounds. They show metallic conductivity. One telluride of gold is a superconductor at very low temperatures: Au3Te5 (1.62 K).
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De verbindingen van goud met e ...... n belangrijke goudleverancier.
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Gold chalcogenides are compoun ...... aturally occurring tellurides.
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De verbindingen van goud met e ...... lluride is zelfs een mineraal.
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Gold chalcogenides are compoun ...... temperatures: Au3Te5 (1.62 K).
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Gold chalcogenides
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Goudchalcogeniden
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