Hydration Energy (Group 1)

Q.

The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resin follows the order:

1. $R{b}^{+}<K^{+}<N{a}^{+}<L{i}^{+}$

2. $N{a}^{+}<L{i}^{+}<K^{+}<R{b}^{+}$

3. $L{i}^{+}<K^{+}<N{a}^{+}<R{b}^{+}$

4. $K^{+}<N{a}^{+}<R{b}^{+}<L{i}^{+}$