Which of the following statements for crystals having frenkel defect is not correct? (A) Frenkel def — AITS & Test Series Chemistry Question

Question

Which of the following statements for crystals having frenkel defect is not correct? (A) Frenkel defects are observed where the difference in sizes of cations and anions is large (B) The density of crystals having frenkel defect is lesser than that of a pure perfect crystal (C) In an ionic crystal having frenkel defect may also contain schottky defect (D) Usually alkali halides do not have frenkel defect