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WINSTONCH [101]
3 years ago
11

which scientist proposed a modification to the theory of atomic number that esablished electron energy levels or shells

Chemistry
1 answer:
Luden [163]3 years ago
7 0

Nier Bohr

These are the valence electrons-
And of course, all the action,
All the chemistry occurs the valence shell,
Because chemical bonds between valence electrons.
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