Select the correct statement(s) for the rock salt structure \( (\mathrm{NaCl}) \) : (a) The tetr...
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0Select the correct statement(s) for the rock salt structure \( (\mathrm{NaCl}) \) :
(a) The tetrahedral voids are smaller than the octahedral sites
(b) The octahedral voids are occupied by cations and the tetrahedral sites are empty
(c) The radius ratio \( \left(\mathrm{r}_{\mathrm{c}} / \mathrm{r}_{\mathrm{a}}\right) \) is 0.225
(d) The radius ratio \( \left(\mathrm{r}_{\mathrm{c}} / \mathrm{r}_{\mathrm{a}}\right) \) is 0.732
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