The complex ion [Ag(S2O3)2]3− is associated with which field?
A
Electroplating
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B
Medicine
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C
Water treatment
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D
Photography
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Solution
The correct option is D Photography Explanation: In black and white photography, the film is fixed by washing with hypo solution which dissolves the undecomposed silver bromide to form [Ag(S2O3)2]3−