Question

Schottky defect in a crystal is observed when

• A. an ion leaves its normal site and occupies an interstitial site
• B. unequal number of cations and anions are missing from the lattice
• C. density of the crystal is increased
• D. equal number of cations and anions are missing from the lattice

Answer 1

Answer: (D)

In Schottky defect, equal number of cations and anions are missing from the lattice. Due to this defect, density of crystal decreases.