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Jonh Dalton's proposed that elements consisted of atoms that were identical and had the same mass and that compounds were atoms from different elements combined together.
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J.J Tomson's theory was that you can determine the charge of the mass ratio of electrons.
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Rutherford discovered alpha, beta, and gamma rays in radiation.
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Niels Bohr proposed an atomic structure theory that stated the outer orbit of an atom could hold more electrons than the inner orbit
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Rutherford discovered alpha, beta, and gamma rays in radiation.
