The ratio of the radius difference betwe...

The ratio of the radius difference between 4th and 3rd orbit of H-atom and that of `Li^(2+)` is:

A

`1:1`

B

`3:1`

C

`3:4`

D

`9:1`

Verified by Experts

The correct Answer is:

B

`r_(4^(th))-r_(3^(rd)) = (a_0)/(Z) [4^2 - 3^2] therefore (r_(H^+))/(r_(Li^(2+))) = 3/1`

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