Solid State Question 27

Question: Each of the following solids show, the Frenkel defect except

Options:

A) $ ZnS $

B) $ AgBr $

C) $ AgI $

D) $ KCl $

Show Answer

Answer:

Correct Answer: D

Solution:

[d] In $ KCl $ , co-ordination number of cation and anion is 6 and 6 respectively.

$ KCl $ is highly ionic so Schottky defect is common. Note: Schottky defect is common in compounds having high coordination number while Frenkel defect is common in compounds with low coordination number.