Select the correct statement for alkali metal | vedclass

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(D) In aqueous medium,alkali metal ions are hydrated. The degree of hydration is inversely proportional to the ionic size. Since $Li^{+}$ has the smal

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Size of $K^{+} > Na^{+}$ in gaseous phase

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(D) In aqueous medium,alkali metal ions are hydrated. The degree of hydration is inversely proportional to the ionic size. Since $Li^{+}$ has the smallest ionic size,it has the highest degree of hydration,resulting in the largest hydrated radius and lowest ionic mobility.Conversely,$Cs^{+}$ has the largest ionic size,the lowest degree of hydration,the smallest hydrated radius,and therefore the highest ionic mobility in aqueous solution.In the molten phase,there is no hydration,so mobility depends on the size of the bare ion; smaller ions like $Li^{+}$ have higher mobility than larger ions like $Cs^{+}$.In the gaseous phase,the size of the ions follows the order $Li^{+}  Na^{+}$ is a correct statement.

Select the correct statement for alkali metal ions:-

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