What happens when silver(I) chloride is exposed to light?

A white precipitate of silver chloride is formed.

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A black powder of silver chloride is formed.

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A black powder of metallic silver is formed.

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Chloride ion is formed.

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Solution

The correct option is C
A black powder of metallic silver is formed.

When exposed to light, silver(I) chloride blackens since it decomposes into chlorine and metallic silver which is liberated as a fine black powder.

$2 A g C l \to 2 A g + C l_{2}$

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