Atoms And Nuclei Question 324

Question: The photon radiated from hydrogen corresponding to 2nd line of Lyman series is absorbed by a hydrogen like atom X in 2nd excited state. As a result the hydrogen like atom X makes a transition to nth orbit. Then -

Options:

A) X=He+,n=4

B) X=Li++,n=6

C) X=He+,n=6

D) X=Li++,n=9

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Answer:

Correct Answer: D

Solution:

  • Energy of nth state in hydrogen is same as energy of 3nth state in Li++.
    31 transition in H would give same energy as the 3×31×3 transistor in Li++.


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