Question

What type of stoichiometric defect is shown by AgCl?

Answer 1

$AgCl$ show Frenkel defect because of the difference of size of cation $A{g}^{+}$ and $C{l}^{-}$ to a large extent. Hence, the $A{g}^{+}$ cation occupy the interstitial sites by leaving a corresponding number of lattice sites vacant.