Silver articles become black on prolonged exposure to air. This is due to the formation of
A. AgCN
B. Ag2O
C. Ag2S
D. Ag2S and AgCN
Answer:C
Silver articles become black on prolonged exposure to air. This is due to the formation of
A. AgCN B. Ag2O C. Ag2S D. Ag2S and AgCN