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Calculate the maximum no. of spectral li...

Calculate the maximum no. of spectral lines obtained if 4-H-atoms are present, if an electron jumps from 4th excited state to ground state in H atom.

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The correct Answer is:
`8`
For H-atom, ground state `n_(1)=1` and 4th excited state `n_(2)=5`
We cannot apply formula as formula is applicable for a large number of electrons
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