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Period: to
The History of Atom
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John Dalton
He proposed that elements consisted of atoms that were identical and had the same mass and that compounds were atoms from different elements combined together. -
Dmitri Mendeleev
He created the periodic table. -
J.J Thomson
He deermined the charge to mass ratio of electrons. -
Ernest Rutherford
He discovered alpha, beta and gamma rays in radiation. -
Niels Bohr
He proposed an atomic structure theory that started the outer orbit of an atom could hold more electrons than the inner orbit.
