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Which of the following alkali metal ions...

Which of the following alkali metal ions in aqueous solution is the best conductor of electricity ?

A

`Li^(+)`

B

`Na^(+)`

C

`K^(+)`

D

`Cs^(+)`

Text Solution

Verified by Experts

The correct Answer is:
D
Extent of hydration of ions decreases on moving down the group from top to bottom, `Cs^(+)` undergoes least hydration and hence has highest ionic mobility.
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