Question

Coordination number of $Zn$ in $ZnS$ (Zine blende) is

• A. 4
• B. 6
• C. 2
• D. None of these

Answer 1

Answer: (A)

4

Answer 2

In $ZnS, S^{2-}$ ions adopt $f.c.c.$ lattice in which $Zn^{2+}$ ions are present in alternate tetrahedral sites. $\therefore$ Co-ordination number of $S^{2+} =$ Co- ordination number of $Zn^{2+} = 4$