Niels+Bohr+A2


 * Atomic Theory**: Applied quantum theory to rutherford's atomic structure by saying that electrons travel in a stationary orbit defined by their momentum. led to the calculations of energy levels of orbtits. ([])


 * New Discoveries**: Said that electrons were set at fixed distances from the nucleus contrary to rutherford's findings

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 * Problems with the model:** his model can't predict the possible energy levels of more complex atoms such as ones higher in the periodic table. so this model only works for simple atoms ([])