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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

K

B

Pb

C

Li

D

Na

Text Solution

Verified by Experts

The correct Answer is:
C
`"Ionic mobility" prop (1)/("size of hydrated ion")`
For `Li^(+)(aq)` ion, the size of the hydrated ion is maximum. Thus it has the lowest ionic mobility.
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