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Established the atomic theory, stating that everything is made up of atoms varying in shape and size.

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Discovered that atoms have a positively-charged core, dubbed the “nucleus”.

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Arranged elements corresponding to their atomic weight, setting the framework for the modern periodic table.

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Proposed that electrons should only orbit around the nucleus in an updated atomic model.

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Inquired that all atoms contained negatively-charged particles, dubbed electrons.

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Discovered and definitively proved the existence of the neutron.

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Proposed that all matter is made from atoms, and that all properties in a single given mass are identical.

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Demonstrated the energy given off by an electron through a wave-like pattern.

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Not to be confused with a certain bald criminal from Albuquerque, Heisenberg formulated the grounds for quantum mechanics through his uncertainty principle.