Question

What is the frequency and wavelength of a photon emitted during a transition form n2=5 state N1=2 state of hydrogen atom.

Answer 1

Answer:

The frequency is nothing but c/& as speed=frequency times wavelength. Thus, Energy = Planck's constant(h)*frequency(v). According to your case, the electron is in a transition state from n=5 to n=2. So, the total energy during the transition is given by E(net) = E(at state 5) - E(at state 2).