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the photon radiated from hydrogen corres...

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.

A

`X=He^(+),n=4`

B

`X=Li^(++),n=6`

C

`X=He^(+), n=6`

D

`X=Li^(++),n=9`

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