Question

What type of stoichiometric defect is shown by $ZnS$?

• A. Schottky defect
• B. Frenkel defect
• C. Both Frenkel and Schottky defects
• D. Non-stoichiometric defect

Answer 1

Answer: (B)

Frenkel defect

Answer 2

The stoichiometric defect shown by $ZnS$ is Frenkel defect which is due to the large difference in the size of the ions, i.e. due to the small size of $Zn ^{2+}$.