Chemistry

Problem

The species O

^{2-}

, F

^{-}

, Ne, Na

^{+}

, and Mg

^{2+}

are isoelectronic. Rank them in order of increasing magnitude of the electrostatic attraction between the nucleus and the electrons. a)

\text{Mg}^{2+} < \text{Na}^{+} < \text{Ne} < \text{F}^{-} < \text{O}^{2-}

\text{F}^{-} < \text{O}^{2-} < \text{Ne} < \text{Na}^{+} < \text{Mg}^{2+}

\text{O}^{2-} < \text{F}^{-} < \text{Ne} < \text{Na}^{+} < \text{Mg}^{2+}

\text{Ne} < \text{O}^{2-} < \text{F}^{-} < \text{Na}^{+} < \text{Mg}^{2+}