(17) Langmuir's shell model with 2, 8, 8, 18, 18, ... electrons per shell follows the empirically established periodic table of the elements. Bohr's shell model according to the formula 2n^2 with 2, 8, 18, 32, ... electrons is not comprehensible. ↑ ↑
(18) An external magnetic field changes the magnetic polarisation of the electrons in the atom and thus the bond strengths of the electrons to the nucleus. This becomes visible through the splitting of the spectral lines. ↑ ↑
(19)…(20) Field reductions in the atom