Question
Chemistry Question on The solid state
Alkali halides do not show Frenkel defect because
A
cations and anions have almost equal size
B
there is a large difference in size of cations and anions
C
cations and anions have low coordination number
D
anions cannot be accommodated in voids
Answer
cations and anions have almost equal size
Explanation
Solution
The correct answer is Option A) cations and anions have almost equal size
Frenkel defect occurs in compounds in which the size of anionsand cations is different. In the Frenkel defect, the smaller ion comes to the interstitial place.
- In Alkali halides, the size of anions and cations is almost equal.
- Therefore, the ion size is large and they cannot get into the interstitial site.
- Hence, alkyl halide compounds do not show Frenkel defect.
Hence, Option "A" is the correct answer.
Discover Topics from This Chapter:Solid State