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How many emission spectral lines are pos...

How many emission spectral lines are possible when hydrogen atom is excited to `n^th` energy level?

A

(n(n+1))/2

B

(n+1)/2

C

(n-1)n/2

D

`n^2/4`

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The correct Answer is:
C
Answer(3) Number of spectral lines = (n(n-1))/2
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