Chemistry

Problem

Rank the ions Al

^{3+}

, Mg

^{2+}

, and Na

^{+}

from smallest to largest ionic radius. a)

\text{Na}^{+} < \text{Mg}^{2+} < \text{Al}^{3+}

\text{Al}^{3+} < \text{Na}^{+} < \text{Mg}^{2+}

\text{Al}^{3+} < \text{Mg}^{2+} < \text{Na}^{+}

\text{Mg}^{2+} < \text{Al}^{3+} < \text{Na}^{+}