Which of the following ionic solids exhibits Frenkel defect?
The correct answer is option (a) . also known as lithium fluoride, exhibits Frenkel defect. Frenkel defect is a type of point defect in ionic solids where a cation is displaced from its regular lattice site to an interstitial site. is an ionic solid in which cations are small in size and can easily move to an interstitial site, leaving behind a vacancy at its original lattice site. (sodium chloride), (calcium oxide), and (potassium bromide) do not exhibit Frenkel defect as their cations are larger in size and not as easily movable. Hence, the correct answer is option (a)