Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy level n = 3 n=3 to the level n = 2 .

The wavelength of spectral line is 656 nm

Explanation:

To calculate the wavelength of light, we use Rydberg's Equation:

Where,

= Wavelength of radiation

= Rydberg's Constant  =

= Final energy level = 2

= Initial energy level = 3

Putting the values in above equation, we get:

Converting this into nanometers, we use the conversion factor:

So,

Hence, the wavelength of spectral line is 656 nm