Correct Answer: Option D

Explanation

The correct answer is D. Conversion of silver halides to grey metallic silver.

This reaction is a classic example of a photochemical reaction:

                 2AgCl (silver chloride) + light energy → 2Ag (silver) + Cl₂ (chlorine)

In this reaction, light energy (typically ultraviolet or visible light) initiates the decomposition of silver chloride into silver metal and chlorine gas. This reaction is commonly used in photographic film and paper.

There is an explanation video available below.

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