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The figure shows an energy level diagram...

The figure shows an energy level diagram for the hydrogen atom. Several transitions are marked as I, II, III,_____. The diagram is only indicative and not be scale.

In which transitions is a Balmer photn absorbed?

A

`291 nm`

B

`364 nm`

C

`487 nm`

D

`652 nm`

Text Solution

Verified by Experts

The correct Answer is:
C
In transition II : `E_(2)=-3.4 eV, E_(4) =-0.85 eV`
`Delta=2.55 eV, DeltaE=(hc)/lambda implies lambda=(hc)/(Delta E)=487 nm`.
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