Full Idea
Bohr used the quantum atom to explain the periodic table and the chemical properties of the elements. ...It was his new theory about the arrangement of electrons inside atoms that explained the placing and grouping of elements in the periodic table.
Gist of Idea
Bohr explained the periodic table and chemical properties of elements, using the quantum atom
Source
Manjit Kumar (Quantum: Einstein and Bohr [2008], Ch 04)
Book Reference
Kumar,Ranjit: 'Quantum: Einstein, Bohr, the debate' [Icon Books 2009], p.106
A Reaction
(second sentence p.133) This is Exhibit A for the idea that essences are explanatory, and are discovered by scientists. The moot point would be whether it is appropriate to describe electron shells as part of the 'essence' of an atom.