Q. In which among the following solids, Schottky defect is NOT observed?

 3352  234 MHT CETMHT CET 2018The Solid State Report Error

Solution:

Schottky defect is shown by those compounds in which the cations and anions are of almost similar sizes. Therefore, and will show schottky defect while ZnS will not show this defect due to large difference in size of anion and cation

Note ZnS will show Frenkel defect