Which of the following alkali metal ions has | vedclass

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(B) In aqueous solution,alkali metal ions are hydrated. Smaller ions have a higher charge density,which leads to a greater degree of hydration. $Li^{+

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$Li^{+}$

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(B) In aqueous solution,alkali metal ions are hydrated. Smaller ions have a higher charge density,which leads to a greater degree of hydration. $Li^{+}$ is the smallest ion among the alkali metals,so it gets most heavily hydrated. Due to the large size of the hydrated $Li^{+}$ ion,it moves slowly through the solution under an electric field. Therefore,$Li^{+}$ has the lowest ionic mobility in aqueous solution.

Which of the following alkali metal ions has the lowest ionic mobility in aqueous solution?

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