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460 BCE
Democritus
Democritus was the first one to proposes the idea of an atom. -
330 BCE
Aristotle
He did not believe in the atom theory only that elements made up everything. -
John Dalton
He proposed the Atomic theory. -
J.J. Thomson
He discovered the electron, created the cathode ray experiment, also know for the description of the atom as plum pudding. -
Ernest Rutherforrd
Created the fold foil experiment, told us that their was a nuclear in the middle,said that most of the charge was positive. -
Niels Bohr
He was a student of Rutherford, treated the plan-tarty theory of how electrons move around the nucleus. -
Robert millikan
Oil drop experiment helped to fined the mass of the atom. -
Erwin schrodinger
He describe the likelihood of finding an electron in a certain position came up with the quantum mechanical model of the atom. -
James Chadwick
He discovered the neutron.