Exposure of silver bromide to sunlight for a long duration turns grey due to:
A
the formation of silver by decomposition of silver bromide
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B
sublimation of silver bromide
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C
decomposition of bromine gas from silver bromide
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D
oxidation of silver bromide
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Solution
The correct option is A the formation of silver by decomposition of silver bromide Silver bromide is water insoluble salt known for its unusual sensitivity to light and this property has allowed silver halides to become the basis of modern photographic materials. In the presence of light decomposition of silver bromide gives silver which turns grey on exposure to light.