Q108 · CSIR NET Chemistry, December 2013
Paper: CSIR NET December 2013 · Subject: Physical Chemistry · Chapter: Solid State Chemistry · Topic: Defects · Marks: 2 · Difficulty: Medium
When Frenkel defects are created in an otherwise perfect ionic crystal, the density of the ionic crystal
(a)increases
(b)decreases
(c)remains same
(d)oscillates with the number of defects
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
A Frenkel defect moves an ion into an interstitial site; mass and volume are unchanged, so the density stays the same (Schottky defects lower it).
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