Q. The coordination number of and ions in the zinc blende (ZnS) type structure is

 1565  210 The Solid State Report Error

Solution:

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