Question

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

Answer 1

The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resin follows the increasing order of Rb⁺ < K⁺ < Na⁺ < Li⁺.

The ease of adsorption of the hydrated alkali metal ions in an ion-exchange resin decreases as size of alkali metal ions increases.

And the order of increase in size of alkali metal ion is Li⁺ < Na⁺ < K⁺ < Rb⁺.

So this idea further lets you know the reason for the order that i have given above.

Answer 2

Explanation:

decreases as size increases

Rb+>K+>Na+>Li+