JEE Main · 2018 · 08 Apr 2018 · Offline · Solid State

Which type of 'defect' has the presence of cations in the interstitial sites ?

(A)Metal deficiency defect
(B)Schottky defect
(C)Vacancy defect
(D)Frenkel defect✓ Correct

Answer: (D)

Solution

When a smaller cation leaves its lattice site and squeezes into an interstitial hole, it leaves a vacancy behind while itself occupying an interstitial position. That is the Frenkel defect, the one marked by cations sitting in interstitial sites.

JEE Main · 2018 · 08 Apr 2018 · Offline · Single correct option

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