Chemistry - Solid State Question with Solution | TestHub

Key Idea Schottky defect is a vacancy defect in ionic solids. It is shown by those ionic substances in which the cations and anions are of almost similar sizes. Schottky defect is present in sodium chloride $(\mathrm{NaCl})$. This defect arises when equal number of cations and anions are missing from their lattice sites such that electrical neutrality is maintained. e.g. $\mathrm{CsCl},\mathrm{NaCl},\mathrm{KCl},\mathrm{AgBr}$, etc.