NEETChemistrySolid State
What happens to the excess Zn²⁺ ions in ZnO crystals after the metal excess defect?
Options
- AThey are removed from the crystal.
- BThey occupy interstitial sites.
- CThey combine with oxygen atoms.
- DThey form zinc clusters.
Correct answer
B. They occupy interstitial sites.
Step-by-step solution
In ZnO crystals after the metal excess defect, the excess Zn²⁺ ions occupy interstitial sites in the crystal lattice.