Chemistry - Solid State Question with Solution | TestHub

When an ion of an ionic compound is missing from its regular lattice site and occupies an interstitial position between lattice points, the defect is known as a Frenkel defect.

In this defect, a vacancy is created at the original site and an interstitial defect is created at the new location. It is typically shown by ionic solids where there is a large difference in the size of ions (usually the smaller cation is dislocated).

Answer: Frenkel defect