Question

Which is the incorrect statement?

• A. $Fe{O}_{0.98}$ has non stoichiometric metal deficiency defect
• B. Density decreases in case of crystals with Schottky’s defect
• C. $NaC{l}_{\left(s\right)}$ is an insulator, $Si$ is a semiconductor, $Ag$ is a conductor, quartz is a piezo electric crystal
• D. Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal

Answer 1

The correct option is D Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal

Frenkel defect occurs in those ionic compounds in which the size of the cation and the anion differ largely.