The species O , F , Ne, Na

CHEMISTRY · Single correct · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends

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-}

(b)

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

(c)

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

(d)

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