Question

What is the wavelength (in nm) of the photon absorbed for a transition of an electron from ninitial

Answer 1

656.6 nm.

Step-by-step explanation:

Using Rydberg's Equation for hydrogen atom:

Where,

= Wavelength of radiation

= Rydberg's Constant

= Higher energy level = 3 (least energetic for visible series)

= Lower energy level = 2

We have:

()

The wavelength of the photon emitted when the hydrogen atom undergoes a transition from n = 2 to n = 3 is 656.6 nm.