Question -
In AgBr crystal, the ion size lies in the order Ag+<<Br−. On the basis of the given information only, the AgBr crystal should have the following characteristics
Options:
A .  Defectless (perfect) crystal
B .  Schottky defect only
C .  Frenkel defect only
D .  Both Schottky and Frenkel defects
Answer: Option C : C AgBr exhibits Frenkel defect due to large difference in the size of Ag+andBr−ions.
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