How does stoichiometric defect affect the density of the crystal?

Answer the following questions: (i) What type of stoichiometric defect is shown by the crystal? (ii) This defect leads to decrease in density, as an equal number of the cations and anions are missing from the crystal lattice. A number of such defects in ionic solids are quite significant.

Which stoichiometric defect in crystals does not change the density of solid?

Frenkel defect is the stoichiometric defect that does not change the density of the crystal because in this defect an ion generally cation gets dislocate which creates a vacancy and interstitial defect simultaneously which cancels out each other in terms of density and hence frenkel defect does not change density of …

Which stoichiometric defect decreases density of a solid?

The Schottky defect decreases the density of the crystal when an equal number of cations and anions are missing from the crystal lattice.

Which defect increases the density of the solid?

interstitial defect
Hence by the above statement we can say that interstitial defect is a type of stoichiometric defect in which density of solid increases.