How in the crystal of zinc sulphide, zinc occupies tetrahedral voids. What is the coordination number of zinc?
The zinc(II) ions, which are smaller than the sulfide ions, are inserted into tetrahedral holes and push the sulfide ions apart so that no two sulfide ions are in contact with each other. The resulting structure has (4,4)-coordination. Observe that none of the octahedral holes are occupied.
The coordination number of zinc isfour.