The theory of spectra and atomic constitution; (1922)
Bohr, Niels Henrik David, 1885-1962 · Cambridge [Eng.] The University Press · leaf 85
with usual representations of the periodic system, this method, 70 THE STRUCTURE OF THE ATOM AND THE proposed more than twenty years ago by Julius Thomsen, of indi-cating the periodic variations in the properties of the elements ismore suited for comparison with theories of atomic constitution.The… … 118- Fig. 1. In an explanation of the periodic system it is natural to as-sume a division of the electrons in the atom into distinct groupsin such a manner that the grouping of the elements in the systemis attributed to the gradual formation of the groups of electronsin the atoms as the atomic…
Spectrum analysis · Hydrogen · Atomic theory · Quantum theory
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