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460
democritus
he was credited by nameing the atoms -
john dalton
He had said atoms looked like spheres, and said all compounds are made of two or more atoms -
joseph john j. j. thomson
He descovered the electrons -
Ernest Rutheford
He ndetermined that positive charges were in the center of the nucleus in the atom. -
neils bohr
He said electrons orbit the nucleus, and could only move in specifi energies