1. Democritus proposes the existence of atoms
5th
2. Dalton's atomic theory
2nd
3. J. J. Thomson discovers the electron
3rd
4. Rutherford's gold foil experiment
4th
5. Bohr model
6th
6. Schrödinger's Wave Mechanics model of the atom
1st
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
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