Consider the normal Zeeman effect applied to the 3d to 2p transition. (a) Sketch an energy-level diagram that shows the splitting of the 3d and 2p levels in an exter- nal magnetic field. Indicate all possible transitions from each m, state of the 3d level to each m, state of the 2p level. (b) Which transitions satisfy the Am, = ± 1 or 0 selection rule? (c) Show that there are only three different transi- tion energies emitted.

Consider the normal Zeeman effect applied to the 3d to 2p transition. (a) Sketch an energy-level diagram that shows the splitting of the 3d and 2p levels in an exter- nal magnetic field. Indicate all possible transitions from each m, state of the 3d level to each m, state of the 2p level. (b) Which transitions satisfy the Am, = ± 1 or 0 selection rule? (c) Show that there are only three different transi- tion energies emitted.