The set representing the correct order of ionic radius is : (a) \( ...

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The set representing the correct order of ionic radius is :
(a) \( \mathrm{Li}^{+}\mathrm{Be}^{2+}\mathrm{Na}^{+}\mathrm{Mg}^{2+} \)
(b) \( \mathrm{Na}^{+}\mathrm{Li}^{+}\mathrm{Mg}^{2+}\mathrm{Be}^{2+} \)
\( \mathrm{P} \)
(c) \( \mathrm{Li}^{+}\mathrm{Na}^{+}\mathrm{Mg}^{2+}\mathrm{Be}^{2+} \)
(d) \( \mathrm{Mg}^{2+}\mathrm{Be}^{2+}\mathrm{Li}^{+}\mathrm{Na}^{+} \)
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