Electrons in a hydrogen atom are in a 3d excitation state in transition.     radiative to an energy level of 2p, without taking into account the spin orbital interaction, i) Indicate the separation of 3d and 2p energy levels if you are in space without  and with an outer magnetic field B in one energy level diagram

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The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: