The ion which has the lowest ionic mobility isA. `Rb^+`B. `K^(+)`C. `N

1.	The ion which has the lowest ionic mobility isA. `Rb^+`B. `K^(+)`C. `Na^(+)`D. `Li^(+)`
Answer» Correct Answer - D `Li` ion has the lowest ionic mobility due to the extensive hydration of ion as a result of very high charge density on account of its very small size. The higher charger density causes `Li` ions to be more highly hydrated by ion-diode interactions than the larger ions. Since a hydrated ion has to drag along a shell of water as it moves through the solution, its mobility in naturally less than that of an unhydrated ion.

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The ion which has the lowest ionic mobility isA. `Rb^+`B. `K^(+)`C. `Na^(+)`D. `Li^(+)`

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