Which one of the following compounds shows both, Frenkel as well as Schottky defects?

Step-by-step solution

It is known that Schottky defects arise due to missing of ions from their lattice point and Frenkel defects arise when the missing ions occupy the interstitial sites. Now for the case of AgBr , we know that the radius of AgBr being intermediate, hence it shows both Frenkel and Schottky defects. The major defect that occurs in AgBr AgBr is the Frenkel defect. It has ccp lattice, The larger halide ions are arranged in a cubic close-packing, while the smaller silver ions fill the octahedral gaps between them, giving a