Question

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

Ag₂O
Ag₃N
Ag₂S and Ag₃N
Ag₂S​

Answer 1

Answer:

Ag2S is the answer for your question

Answer 2

Silver metal is highly unreactive, i.e., it does not react with oxygen. But with prolonged exposure to air, it reacts with hydrogen sulphide gas (H2S). Silver articles form a coating of silver sulphide (Ag2S) and lose their shine (get tarnished).

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