Question

In zinc blende structure:

• A. zinc ions occupy half of the tetrahedral sites.
• B. each $Z{n}^{2+}$ ion is surrounded by six sulphide ions
• C. each $S^{2-}$ ion is surrounding by six $Z{n}^{2+}$ ions
• D. it has $bcc$ structure

Answer 1

Answer: (A), (D)

The correct options are
A zinc ions occupy half of the tetrahedral sites.
D it has $bcc$ structure

Structure of Zinc Blende

Zinc blende has a $FCC$ structure. In this sulphide ions are present at corners and zinc ions occupy half of the tetrahedral voids.

Each $Z{n}^{+2}$ ion is surrounded by 4 $S^{-2}$ ion and each $S^{-2}$ ion is surrounded by 4 $Z{n}^{+2}$

Hence, Options "A" & "D" are correct answers.