For sphalerite (ZnS) structure which of the following is true? (1) ...

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For sphalerite (ZnS) structure which of the following is true?
(1) In the fcc of \( \mathrm{S}^{2-} \), the \( \mathrm{Zn}^{2+} \) ions occupy alternate tetrahedral voids
(2) The coordination number is \( (8,4) \)
(3) In the hcp of \( \mathrm{S}^{2-} \), the \( \mathrm{Zn}^{2+} \) ions occupy alternate tetrahedral voids
(4) Schottky defect is observed
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