Which of the following can be decomposed by the action of light?Select an answerANaClBAgClCKClDCuCl2

To determine which of the substances can be decomposed by the action of light, let's consider their chemical properties and photochemical behaviors:

1. NaCl (Sodium Chloride): This is a stable ionic compound that does not decompose upon exposure to light.

2. AgCl (Silver Chloride): Silver chloride is known to undergo photodecomposition when exposed to light. It decomposes into silver metal and chlorine gas.

3. KCl (Potassium Chloride): Similar to sodium chloride, potassium chloride is also stable and does not decompose under light exposure.

4. CuCl2 (Copper(II) Chloride): Copper(II) chloride does not substantially decompose when exposed to light under standard conditions.

Final Answer

The substance that can be decomposed by the action of light is B) AgCl (Silver Chloride).