Question

In a hydrogen atom an electron undergoes transition from a energy level with n = 4 to an energy level with n = 2. Calculate the wavelength of the spectral line thus obtained. In which region of the electromagnetic spectrum this line would be observed and what would it be its colour ..??
plz anybody help me in this qs..​

Answer 1

Answer:

Solution

For hydrogen atom,

<br> Energy emitted when the electron jumps from

will be given by <br>

<br> The wavelength corresponding to this energy can be calculated using the expression, <br>

<br> so that