Which of the following alkali metal ions has the lowest ionic mobility in aqueous solutions?A. `Li^(o+)`B. `Na^(o+)`C. `K^(o+)`D. `Rb^(o+)`

Which of the following alkali metal ions has the lowest ionic mobility

1.	Which of the following alkali metal ions has the lowest ionic mobility in aqueous solutions?A. `Li^(o+)`B. `Na^(o+)`C. `K^(o+)`D. `Rb^(o+)`
Answer» Correct Answer - A Since solvent is not mentioned so ionic mobility `prop` charge density `( `charge `//` size `)` . `Li^(o+)` has the highest charge density. But in aqueous solution, due to extensive hydration, its mobility becomes lowest amongst the other ions of first group of periodic table.

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Which of the following alkali metal ions has the lowest ionic mobility in aqueous solutions?A. `Li^(o+)`B. `Na^(o+)`C. `K^(o+)`D. `Rb^(o+)`

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