In an ionic solid equal number of cations and anions are missing from their regular positions in the crystal…
In an ionic solid equal number of cations and anions are missing from their regular positions in the crystal lattice creating vacancies is called-
Vacancy defect
Self interstitial defect
Schottky defect
Frenkel defect
Solution
The correct answer is (3) Schottky defect.
A Schottky defect occurs in an ionic solid when equal numbers of cations and anions are missing from their regular positions in the crystal lattice, creating vacancies. This defect maintains the overall electrical neutrality of the crystal.