NEETChemistrySolid State
What is the cause of the metal excess defect in zinc oxide (ZnO) crystals?
Options
- ALoss of oxygen atoms
- BDeposition of zinc atoms on the crystal surface
- CFormation of oxygen vacancies
- DLoss of electrons by Zn²⁺ ions
Correct answer
A. Loss of oxygen atoms
Step-by-step solution
The metal excess defect in zinc oxide (ZnO) crystals occurs due to the loss of oxygen atoms upon heating.