The radius of which ion is closest to that of \( \mathrm{Li}^{+} \)ion ? \( \mathrm{P} \) (a) \(...

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The radius of which ion is closest to that of \( \mathrm{Li}^{+} \)ion ?
\( \mathrm{P} \)
(a) \( \mathrm{Na}^{+} \)
(b) \( \mathrm{Be}^{2+} \)
(c) \( \mathrm{Mg}^{2+} \)
(d) \( \mathrm{Al}^{3+} \)
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