\( \mathrm{CdO} \) has \( \mathrm{NaCl} \) structures with density \( 8.27 \mathrm{~g} / \mathrm...

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\( \mathrm{CdO} \) has \( \mathrm{NaCl} \) structures with density \( 8.27 \mathrm{~g} / \mathrm{cc} \). If the ionic radius of \( \mathrm{O}^{2-} \) is \( 1.24 \AA \), determine ionic radius of \( \mathrm{Cd}^{2+} \) :
(a) \( 1.5 \AA \)
(b) \( 1.1 \AA \)
(c) \( 1.9 \AA \)
(d) \( 1.5 \AA \)
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