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Which one of the following is the correct order of the size of the ions?
(EAMCET 2014)
P
(a) \( \mathrm{Na}^{+}\mathrm{Mg}^{2+}\mathrm{F}^{-}\mathrm{O}^{2-} \)
(b) \( \mathrm{O}^{2-}\mathrm{F}^{-}\mathrm{Na}^{+}\mathrm{Mg}^{2+} \)
(c) \( \mathrm{Mg}^{2+}\mathrm{Na}^{+}\mathrm{F}^{-}\mathrm{O}^{2-} \)
(d) \( \mathrm{O}^{2-}\mathrm{F}^{-}\mathrm{Mg}^{2+}\mathrm{Na}^{+} \)
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