Frenkel defect is caused due to
[MP PET 1994]
Frenkel's defect is due to shift of an ion from the normal lattice site (Creating a vacancy) and occupy interstitial spaces.
Due to Frenkel defect, the density of ionic solids
[MP PET 1996; MP PMT 2002]
Which one of the following has Frenkel defect
[MP PMT 2000]