Which of the following transitions are n...

Which of the following transitions are not allowed in the normal electronic emission spectrum of an atom?

A

`1srarr2s`

B

`2prarr1s`

C

`5drarr4p`

D

`5prarr3s`

Verified by Experts

The correct Answer is:

A

In the emission spectrum, the transition is from higher to lower energy orbital.

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