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The electron in hydrogen atom in a sampl...

The electron in hydrogen atom in a sample is in `n^(th)` excited state, then the number of differrent spectrum lines obtained in its emission spectrum will be

A

`1+2+3+"……….."+(n-1)`

B

`1+2+3+"…………."+(n)`

C

`1+2+3+"…………."+(n+1)`

D

`1xx2xx3xx"…………"xx(n-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`n^(th)` excited state `=.^(n+1)C_(2) =(n(n+1))/(2) =Sigma n`
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Knowledge Check

  • When an electron is excited from ground level to 5th orbit,the number of spectral lines obtained in Bohr spectrum of H-atom is

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    B
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    D
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    C
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    D
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