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Proposed that earliest views on the shapes and connectivity of atoms. (460 BC)
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proposed an atomic theory with spherical atomic atoms based upon maeasurable properties of mass
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studied canal rays and found they were associated with th proton H+
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Studied radiations emitted from uranium and thorium and named them Alpha and Beta.
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Developed an explanation of atomic structure that underlies regularities of the periodic table of elements. His atomic model had atoms built up of successive orbital shells of electrons.
