lonic lattice has two major points defects, (1) Schottky (2) Frenkel defects Schottky defects occurs due to the cation-anion pair's missing from the lattice sites. Frenkel defects occurs when an ion leaves its lattice site and fits into an interstitial space. The neutrality of the crystal is being maintained and we considered all losses from interstitial positionsWhich defect decreases density of the crystal?Structure shown here represents: Structure shown here represents: