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The Solid Sphere model- Dalton believed that the model of the atom was just a solid sphere.
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Plum Pudding Model- Electrons were added to the model. He discovered that negatively charged electrons that were balanced out with a positively charged "cloud" around them. Found using the Cathode Ray Experiment.
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Using the Gold Foil experiment, Rutherford found that an atom has a positively charged center (the nucleus).
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Bohr created the atomic model where electrons orbit the nucleus.
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This is the modern atomic model. They added the uncertainty principle and wave mechanics to the model.
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Chadwick created a model that has neutrons in the nucleus.
