Q72 / 180 · NEET 2015 (Phase 2) · Chemistry

The correct statement regarding defects in crystalline solids is :

  • A
    Schottky defects have no effect on the density of crystalline solids
  • B
    Frenkel defects decrease the density of crystalline solids
  • Correct answer
    C
    Frenkel defect is a dislocation defect
  • D
    Frenkel defect is found in halides of alkaline metals

Solution

The Frenkel defect is a dislocation defect. When atoms or ions at the lattice point are displaced to an interstitial site creating a vacancy. The cation moves to another position between the two layers and is surrounded by a greater number of anions.

Hence, the correct answer is option: 'C'.

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