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In a H-like sample, electrons make trans...

In a H-like sample, electrons make transition from `4^(th)` excited state upto `2^(nd)` state. Then ,

A

`10` different spectral lines are observed

B

`6` different spectral lines are observed

C

number of lines belonging to the balmer series is `3`

D

Number of lines belonging to paschen series is `2`

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
Transition is taking place from `5 rarr 2`
`rArr Deltan=3`
Hence maximum number of spectral line observed `=(3(3+1))/(2)=6`.

(C) number of lines belonging to the Balmer series `=3(5 rarr2, 4rarr2, 3 rarr 2)` as shown in figure.
Number of lines belonging to Paschen series `=2(5 rarr 3, 4 rarr 3)`.
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