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

💡 Solution & Explanation

$K^+$ and $Cl^-$ have comparable ionic radii, which favors Schottky defects. $Li^+$ is much smaller than $I^-$, providing a large size difference that allows $Li^+$ to easily occupy interstitial sites, favoring Frenkel defects. The Reason states the general rule that correctly explains the specific examples in the Assertion. Therefore, correct answer is A.