Question

Which one of the following has Frenkel defect?

• A. Sodium chloride
• B. Graphite
• C. Silver bromide
• D. Diamond

Answer 1

The correct option is C Silver bromide

The density of crystal is lowered in Schottky defect because, in Schottky defect, equal number of cations and anions are missing from the lattice, so the electrical neutrality is maintained and a number of cations and anions are missing so mass will decrease.

We know that,

Density $=\frac{mass}{volume}$

So, density is directly proportional to mass, so due to a decrease in mass, density will also decrease.

Hence, option B is correct.