Question

Which of the following compounds shows both Frenkel and Schottky defects:

• A. $KCl$
• B. $NaCl$
• C. $AgBr$
• D. $AgCl$

Answer 1

The correct option is C $AgBr$

Schottky defect is shown in $AgBr$ because cations and anions both get out of the lattice. $A{g}^{+}$ is quite small which is why it occupies interstitial sites easily - this is the Frenkel defect.