Which one of the following defects in the crystals lowers its density? – InterviewSolution

1.	Which one of the following defects in the crystals lowers its density?
Answer» FRENKEL defect Schottky defect F-centres interstitial defect. Solution :Schottky defect in the crystals lowers its density as it is caused if some of the lattice points are unoccupied. The points which are unoccupied are called vacancies or HOLES. The number of missing POSITIVE and negative ions is the same in this CASE and thus, the crystal REMAINS neutral.

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