Ncert Exercises & Solutions

Frenkel defect is also known as-

(a) Stoichiometric defect

(b) Dislocation defect

(d) Non-stoichiometric defect

1. (a, b)

2. (b, c)

3. (c, d)

4. (a, d)

Hint: Cation is dislocated from its normal site to an interstitial site

Frenkel defect arises when the smaller ion (usually cation) is dislocated from its original site to the interstitial site, this is also

known as dislocation defect.

Since stoichiometry of substance persists so, it is categorized as a stoichiometric defect.