how many spectral lines are seen for hydrogen atom when electron jump from n2=5 and n1=1 in visible region??
Asked by Sayoni Maiti | 23rd May, 2014, 10:07: PM
If the electron jumps from n2 = 5 to n1 = 1 then following are the transitions possible.
- 5→ 4
- 5→ 3
- 5→ 2
- 5 → 1
- 4 → 3
- 4→ 2
- 4→ 1
- 3 → 2
- 3→ 1
- 2 → 1
Hence there are 10 transitions and hence 10 spectral lines possible.
The general formula for the number of spectral lines emitted is
N = (n2 – n1) (n2 – n1 + 1)
2
So N = ( 5 - 1) ( 5 - 1 + 1 ) = 4 X 5 = 10
2 2
If the electron jumps from n2 = 5 to n1 = 1 then following are the transitions possible.
- 5→ 4
- 5→ 3
- 5→ 2
- 5 → 1
- 4 → 3
- 4→ 2
- 4→ 1
- 3 → 2
- 3→ 1
- 2 → 1
Hence there are 10 transitions and hence 10 spectral lines possible.
The general formula for the number of spectral lines emitted is
N = (n2 – n1) (n2 – n1 + 1)
2
So N = ( 5 - 1) ( 5 - 1 + 1 ) = 4 X 5 = 10
2 2
Answered by Vaibhav Chavan | 28th May, 2014, 10:25: AM
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