Read the Assertion and Reason below and choose the correct option. — Solid State Chemistry Question

💡 Solution & Explanation

The creation of intrinsic point defects requires energy (endothermic, $\Delta H > 0$) but increases the disorder (entropy, $\Delta S > 0$) of the crystal. By the thermodynamic relation $\Delta G = \Delta H - T\Delta S$, higher temperatures make the defect formation more spontaneous and thermodynamically favorable, thereby increasing their concentration. The Reason correctly explains the Assertion. Therefore, correct answer is A.