The ionic conductance of following cation in a given concentration are in the order

Options

A. `Li^(+) lt Na^(+) lt K^(+) lt Rb^(+)`
B. `LI^(+) lt Na^(+) lt K^(+) lt Rb^(+)`
C. `LI^(+) lt Na^(+) gt K^(+) gt Rb^(+)`
D. `Li^(+) = Na^(+) lt K^(+) lt Rb^(+)`

Answer

A

Explanation

As the size of cation increases the hydration will be less and mobility will be more hence conductance will be more
`:. Li^(+) lt Na^(+) lt K^(+) lt Rb^(+)`.