Dalton: , Atomic Theory, Atoms of a given element are identical. , Agreed with Democritus - Solid Sphere Model, Thomson: , Experimented using the cathode ray. , Discovered the electron. , Plum Pudding Model, Rutherford: He experimented using Gold Foil, Discovered the positively charged nucleus, , Nuclear Model, Democritus: Atom was indivisible, Greek Philosopher, Disagreed with Aristotle, Named atoms from Greek word atomos,

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