BOHR for each shell 2, 8, 18, 32, 50, … atoms

formal basis: Number of electrons per shell n

$$ ={2n^2} $$

LANGMUIR for each shell 2, 8, 8, 18, 18, … atoms

empirical basis:

Periodic table of the elements (Mendeleev, Mayer)

<aside> 📌 Presumtion: 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. ↓17↓

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