the photon radiated from hydrogen corresponding to the second line of Lyman series is absorbed by a hydrogen like atom X in the second excited state. Then, the hydrogen-like atom X makes a transition of nth orbit.

Options

A. `X=He(+),n=4`
B. `X=Li^(++),n=6`
C. `X=He^(+),n=6`
D. `X=Li^(++),n=9`

Answer

D

Explanation

`13.6xx(1/1-1/9)=13.6xxZ^(2)(1/3^(2)-1/n^(2))` Rightarrow is satisfied for `Z=3` and `n=9`n of the given option