Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?(1) K (2) Rb (3) Li (4) Na

Ionic mobility of which of the following alkali metal ions is lowest w

1.	Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?(1) K (2) Rb (3) Li (4) Na
Answer» (3) Li+ being smallest, has maximum charge density. Li⁺ is most heavily hydrated among all alkali metal ions. Effective size of Li⁺ in aqueous solution is therefore, largest. So, moves aslowest under electric field.

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Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?(1) K (2) Rb (3) Li (4) Na

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