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The ionic conductance is least for...

The ionic conductance is least for

A

`Cs^(+)`

B

`Rb^(+)`

C

`K^(+)`

D

`Na^(+)`

Text Solution

Verified by Experts

The correct Answer is:
d
Due to small size of `Na^(+)`, it is heavily hydrated and become large molecule ionic conductance increases down the group in alkali metals. Order of ionic conductance is
`Na^(+)ltK^(+)ltRb^(+)ltCs^(+)`
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