The electron of a hydrogen atom is excited to the 3S_1/2. Express your answers in units of ?.

??? a) Determine the magnitude of the total angular momentum of the electron.

b) Determine the magnitude of the spin magnetic moment of the electron.

c) The electron then relaxes to the states with n = 2. During the relaxation, the electron experiences an internal magnitude field of 0.39 T.

i. List all the possible transition(s).

ii. Estimate the frequency separation between the observed spectral lines.

4. The electron of a hydrogen atom is excited to the 3s\"; Express your answers in units of h. a) Determine the magnitude of the total angular momentum of the electron. b) Determine the magnitude of the spin magnetic moment of the electron. c) The electron then relaxes to the states with n = 2. During the relaxation, the electron experiences an internal magnitude eld of 0.39 T. i. List all the possible transition(s). ii. Estimate the frequency separation between the observed spectral lines. (24 marks)