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John Dalton created his model of the atom in 1808. He created it after his experiment with gases. His conclusion was that the total pressure of a mixture of gases amounted to the sum of the partial pressures that each individual gas exerted while occupying the same space.
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J.J. Thomson created his model of the atom in 1897. After his experiment with gray cathode ray tubes. He came up wiht the conclusion that all atoms contain tiny negatively charged subatomic particles or electrons.
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Ernest Rutherford came up with his model of the atom in 1919. After the gold foil experiment. A beam of alpha particles was aimed at a piece of gold foil. Most alpha particles passed through the foil, but a few were scattered backward. He then came up with the conclusion that most of the atom is empty space surrounding a tiny nucleus.
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Niels Bohr made his model of the atom in 1913. After his experiment based on quantum theory that some physical quantities only take discrete values. He then came up with the conclusion that Electrons move around a nucleus, but only in prescribed orbits, and If electrons jump to a lower-energy orbit, the difference is sent out as radiation.