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Question

The number of spectral lines that are possible when electrons in fourth energy level in different hydrogen atoms return to ground state.

A
4
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B
8
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C
6
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D
3
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Solution

The correct option is C 6
When electron transition from nth to ground state then Σ(n1) spectral lines are produced

fourth energy level means n = 4

Thus if electrons transiton from fourth energy level then Σ(41)=3+2+1=6 spectral lines are produced

Hence, the correct option is C

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