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Question

Coordination numbers of Zn2+ and S2 in the crystal structure of wurtzite are :

A
4,4
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B
6,6
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C
8,4
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D
8,8
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Solution

The correct option is C 4,4
Coordination numbers of Zn2+ and S2 in the crystal structure of wurtzite are 4,4. Sulphide ions occupies ccp while zinc ions occupy alternate tetrahedral voids. Number of formula units per unit cell is 4.

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