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He proposed the uncertainty principle. This principle states that one can never know the exact location and energy of an electron simmutaneously
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proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level to another. The element bohrium was named after him.
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He was awarded the Nobel Prize in Chemistry in 1908 "for his investigations into the disintegration of the elements, and the chemistry of radioactive substances".
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Discovered the electron with the dicovery of his subatomic particle
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He was an early investigator of discharge tubes, the discoverer of anode rays, and is sometimes credited with the discovery of the proton. Discovered positive particles. He noted that the particles had a charge equal and opposite to the electron.
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Created the periodic table which organizes elements according to similarity
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Believed all matter was created by atoms, which he believed where indestructible. Also that that atoms of given elements are identical in their mass and properties
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He proposed that all matter including space and time, was made up of small units named atoms.
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Dicovered the Neutron. Neitrons help balance protons.
