Question

Schottky defect in solids is due to:

• A. A pair of cation and anion vacancies
• B. Occupation of interstitial site by a pair of cation and anion
• C. Occupation of interstitial site by a cation
• D. Occupation of interstitial site by an anion

Hint:

In Schottky defects, both cation and anion vacancies are created to maintain charge balance in the crystal lattice.

Answer 1

The Correct Option is A

Step 1: Schottky defect. Schottky defect occurs when there is a pair of vacancies, one for a cation and one for an anion, in a crystal lattice. This defect maintains electrical neutrality.
Step 2: Conclusion. Thus, the Schottky defect is due to a pair of cation and anion vacancies.