Question

Which of the following crystal does not exhibit Frenkel defect?

• A. $AgBr$
• B. $AgCl$
• C. $KBr$
• D. $ZnS$

Answer 1

The correct option is C $KBr$

A Frenkel defect or dislocation defect is a type of defect in crystalline solids where in an atom is displaced from its lattice position to an interstitial site, creating a vacancy at the original site and an interstitial defect at the new location without any changes in chemical properties.

$KBr$ is an alkali halide. In these type of compounds the size of cations and anions are same.

So, it does not show Frenkel Defect.

So, option $C$ is correct.