Q. Which kind of defect is shown by the given crystal? $K^{+}\ \ Cl^{-}K^{+}\ \ Cl^{-}K^{+}\ \ Cl^{-}$ $Cl^{-}$ $\square$ $Cl^{-}K^{+}\square$ $K^{+}$ $K^{+}Cl^{-}\ \square\ Cl^{-}K^{+}Cl^{-}$ $Cl^{-}K^{+}Cl^{-}K^{+ \ }\square{\ K}^{+}$

A) Schottky defect
B) Frenkel defect
C) Schottky and Frenkel defects
D) Substitution disorder
Explanation

(a)
In the given crystal equal number of cations and anions are missing (two $K^{+}$ and two ${Cl}^{-})\$from their normal lattice sites and the crystal maintains electrical neutrality. Hence, this is Schottky defect.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.