Question

In AgBr crystal, the ion size lies in the order $A{g}^{+}<<B{r}^{-}$. On the basis of the given information only, the AgBr crystal should have the following characteristics

• A. Defectless (perfect) crystal
• B. Schottky defect only
• C. Frenkel defect only
• D. Both Schottky and Frenkel defects

Answer 1

The correct option is C Frenkel defect only

AgBr exhibits Frenkel defect due to large difference in the size of $A{g}^{+}andB{r}^{-}$ ions.