No. The gross structure of an atom is only determined by the electrostatic interaction between the charge of the electrons and of the protons in the nucleus. Th

No. The gross structure of an atom is only determined by the electrostatic interaction between the charge of the electrons and of the protons in the nucleus. The interaction between the magnetic moments of the electrons and of the nucleus (which is due to both protons and neutrons) leads to hyperfine structure on a much smaller energy scale.