In a solid lattice, cation and an anion both have left lattice site. The lattice defect is known as
intertial defect
valency defect
Frenkel defect
Schottky defect
It is stoichiometric imperfection, Crystals having ratio of radius of cation to anion is high
In an imperfect crystal , both cation and anion have left the lattice. The cystal defect is known as