Question

The correct statement regarding defect in solids is:

• A. Frenkel defect is usually favoured by a very small difference in the size of cations and anions
• B. Frenkel defect is a dislocation defect
• C. Trapping of protons in the lattice leads to the formation of F-centers
• D. Schottky defect has no effect on the physical properties of solids

Answer 1

The correct option is B Frenkel defect is a dislocation defect

Frenkel defects are dislocation defects because in this defect an atom is displaced from its lattice position to an interstial site. This usually happens when there is a large difference in the size of cations and anions.
F-centres are created when electrons enter anion vacancies.
Schottky defects affect the density of the solids.