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  4. The coordination number of Zn 2+and S 2- ions in the zinc blende (ZnS) type structure is

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Q. The coordination number of $Zn ^{2^{+}}$and $S ^{2-}$ ions in the zinc blende $(ZnS)$ type structure is

The Solid State

Solution:

In zinc blende structure ( $ZnS$ ), sulphide ions are face-centred and zinc is present in alternate tetrahedral voids. Formula is $ZnS$. Coordination number of $Zn$ is 4 and that of sulphide is 4 . Other substance that exists in this kind of a structure is BeO.