forms covalent bonds with most other elements, noting it can form ionic selenides with highly electropositive metals. The common oxide of selenium (SeO3)...
124 KB (15,306 words) - 17:46, 2 August 2024
coinage metal selenides X2Se (X = Cu, Ag, Au) with soda ash to give the selenite: X2Se + O2 + Na2CO3 → Na2SeO3 + 2 X + CO2; the selenide is neutralized...
248 KB (28,017 words) - 18:31, 8 August 2024
heavier hydrogen chalcogenides, namely hydrogen sulfide H2S, hydrogen selenide H2Se, and hydrogen telluride H2Te, water should be "a foul-smelling, poisonous...
65 KB (8,975 words) - 13:41, 7 July 2024
S2CID 100301711. Kirby, HW (1985). "Analytical chemistry of astatine". In Kugler, HK; Keller, C (eds.). Gmelin Handbook of Inorganic Chemistry, At Astatine...
41 KB (2,770 words) - 20:52, 4 August 2024