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In which of the following crystals alternate tetrahedral voids are occupied

$(a)\;NaCl\qquad(b)\;ZnS\qquad(c)\;CaF_2\qquad(d)\;Na_2O$

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In ZnS structure , Sulphate ions occupy all the lattice points while $Zn^{2+}$ ions are present in alternate tetrahedral voids.
Hence answer is (b)
answered Feb 17, 2014 by sharmaaparna1
 

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