Pertain to the following statement and figure

The figure above shown level diagram of the hydrogen atom. Serveral transition are market as I, II, III, … The diagram is only indicative and not to scale.
The wavelength of the radiation involved in transition II is:

Options

A. `291 nm`
B. `364 nm`
C. `487 nm`
D. `652 nm`

Answer

C

Explanation

In transition II,
`E_(2) = - 3.4 eV, E_(4) = - 0.58 eV`
`Delta E = 2.55 eV`
`Delta E = (hc)/(lambda) implies lambda = (hc)/(Delta E) = 487 nm`