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Silver articles become black on prolonged exposure to air. This is due to the formation of

(a) Ag3N
(b) Ag2O
(c) Ag2S
(d) Ag2S and Ag3N

Science - Exemplar Problems

Chapter_Metals and Non Metals



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  (c) Silver article become black because silver reacts with H2s gas present in air to form black coating of Ag2s

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