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The ionic radii of \( \mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+} \)and \( \mathrm{Mg}^{2+} \) are in the order
\( \mathrm{P} \)
[JEE Main-2020 (September)]
WV
(1) \( \mathrm{F}^{-}\mathrm{O}^{2-}\mathrm{Na}^{+}\mathrm{Mg}^{2+} \)
(2) \( \mathrm{Mg}^{2+}\mathrm{Na}^{+}\mathrm{F}^{-}\mathrm{O}^{2-} \)
(3) \( \mathrm{O}^{2-}\mathrm{F}^{-}\mathrm{Mg}^{2+}\mathrm{Na}^{+} \)
(4) \( \mathrm{O}^{2-}\mathrm{F}^{-}\mathrm{Na}^{+}\mathrm{Mg}^{2+} \)
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