KCET2022ChemistrySolid State
Alkali halides do not show dislocation defect because
Options
- Aanions cannot be accommodated in vacant spaces
- Bcations and anions have almost equal size
- Cthere is large difference in size of cations and anions
- Dcations and anions have low coordination number
Correct answer
B. cations and anions have almost equal size
Step-by-step solution
Generally in alkali halides, cations and anions have almost equal size, thus they do not show dislocation defect.