who discovered the sub atomic particle proton?
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Ernest Rutherford
Identified in other nuclei (and named) by Ernest Rutherford (1917–1920). , with a positive electric charge of +1e elementary charge and a mass slightly less than that of a neutron.
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Protons were discovered by Ernest Rutherford in the year 1919, when he performed his gold foil experiment. He projected alpha particles (helium nuclei) at gold foil, and the positive alpha particles were deflected. He concluded that protons exist in a nucleus and have a positive nuclear charge. The atomic number or proton number is the number of protons present in an atom. The atomic number determines an element (e.g., the element of atomic number 6 is carbon).
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