The ions O^{2-}, F^{-}, Na^{+}, Mg^{2+} and A | vedclass

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(D) For isoelectronic species,the ionic radius decreases as the nuclear charge (atomic number) increases.Since the number of electrons is the same ($1

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a significant decrease from $O^{2-}$ to $Al^{3+}$

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(D) For isoelectronic species,the ionic radius decreases as the nuclear charge (atomic number) increases.Since the number of electrons is the same ($10$ electrons in each),the effective nuclear charge increases from $O^{2-}$ to $Al^{3+}$.Therefore,the ionic radii follow the order: $O^{2-} > F^{-} > Na^{+} > Mg^{2+} > Al^{3+}$.This represents a significant decrease from $O^{2-}$ to $Al^{3+}$.

The ions $O^{2-}, F^{-}, Na^{+}, Mg^{2+}$ and $Al^{3+}$ are isoelectronic. Their ionic radii show

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