Question

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.

Which transition will occur when a hydrogen atom is irradiated with radiation of wavelength `103 nm`.
A. II
B. II
C. IV
D. V

Answer 1

Correct Answer - D
Wavelength of radiation `=103 nm=1030 Å`
`:. DeltaE=(12400)/(1030 Å) cong 12.0 eV`
So difference of energy should be `12.0 eV` (approx)
Hence `n_(1)=1` and `n_(2)=3`
`(-13.6) eV" "(-1.51)eV`
`:.` Transition is V.