Ncert Exercises & Solutions

Cations are present in the interstitial sites in ............ .

1. Frenkel defect.

2. Schottky defect.

3. Vacancy defect.

4. Metal deficiency defect.

HINT: There is no effect on density in case of Frenkel defect.

Explanation: When smaller ion (usually cation) is dislocated from its normal site in crystal and move to interstitial site is known as Frenkel defect as shown below:

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