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Ionic mobility of which of the following...

Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?

A

Na

B

K

C

Rb

D

Li

Text Solution

Verified by Experts

The correct Answer is:
D
Enthalpy of hydration of `Li^(+)` is maximum among given species.
So after hydration size of `Li^(+)` (aq.) will be maximum and its ionic mobility will be minimum.
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