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Consider the radii 0.095 nm $({Na}^{+})$ ,0.181 nm (CI^-), 0.074 nm (Zn2⁺)0.184 nm $(S^{2 -})$ ,0.068 nm $({Ti}^{4 +})$ 0.140 nm $(O^{2 -})$ ,0.169nm(Cs⁺)Choose the correct option from among the following. (Use radius ratio rules)

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Na⁺ ions are packed in octahedral holes between the planes of close-packed CI^-ions

${Zn}^{2 +}$ ions are packed in tetrahedral holes

${Cs}^{+}$ ions are packed in a simple cubic array of CI^-ions

All of these

answer is D.

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Calculate the $\frac{r +}{r -}$ ratio to get the limiting ratio value and according to the table. All are correct.

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