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The ionic mobility of alkali metal ions ...

The ionic mobility of alkali metal ions in aqueous solution is maximum for:

A

`K^(+)`

B

`RB^(+)`

C

`Li^(+)`

D

`Na^(+)`

Text Solution

Verified by Experts

The correct Answer is:
B
Smaller the size of ion, more highly it is hydrated and hence its hydrated ionic raedius will be greater and its ionic mobility is lesser in aqeuous solution.
Thus the order of ionic mobilit is
`Li^(+)ltNa^(+)ltK^(+)ltRb^(+)ltCs^(+)`
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