Chemistry - Solid State Question with Solution | TestHub

In ${\mathrm{Fe}}_3{\mathrm{O}}_4$ crystal system, removal of few ${\mathrm{Fe}}^{2+}$ ions result in increase in density of unit cell.

Doping of ${\mathrm{Ca}}^{2+}$ ions in place of ${\mathrm{Na}}^{+}$in NaCl crystal increases electrical conductivity but maintains electrical neutrality.

Schottky defect is basically vacancy defect in ionic compound.

Schottky & Frenkel defects, both are dislocation defects & therefore enhance electrical conductivity compared to ideal crystal at T = 0 Kelvin.