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11-12-2018
Chemistry

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

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22lorreooeoeiie 22lorreooeoeiie

11-12-2018

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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