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A gas of mono atomic hydrogen is excited...

A gas of mono atomic hydrogen is excited by an energy of `12.75eV//"atom"`. Which spectral lines of the following are formed in Lyman, Balmer and Paschen series respectively.

A

`3,2,1`

B

`2,3,1`

C

`1,3,2`

D

`1,2,3`

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta E= E_4 - E_1 = 12.75` ev/atom, then the electron is excited to fourth orbit.
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