Chemistry

Problem

The order of increasing ionic radius of the following is : a.

\text{K}^+ < \text{Li}^+ < \text{Mg}^{2+} < \text{Al}^{3+}

\text{K}^+ < \text{Mg}^{2+} < \text{Li}^+ < \text{Al}^{3+}

\text{Li}^+ < \text{K}^+ < \text{Mg}^{2+} < \text{Al}^{3+}

\text{Al}^{3+} < \text{Mg}^{2+} < \text{Li}^+ < \text{K}^+