Which is /are correct statement about zinc blende structure ?

Options

A. zinc ions occupy half of the tetrahedral sites
B. each `Zn^(2+)` ion is surrounded by six sulphide ions
C. each `S^(2-)` ion is surrounded by six `Zn^(2+)` ions
D. it has fcc structure

Answer

A

Explanation

ZnS has a ccp structure . `S^(2-)` ions are present at the corners of the cube and centre of each face. `Zn^(2+)` ions occupy half of the tetrahedral sites. Each `Zn^(2+)` ion is surrounded by four `S^(2-)` ions and each `S^(2-)` ion is surrounded by four `Zn^(2+)` ions.