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protons and neutrons
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Chemistry
Structure of an Atom
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The nucleus of an atom comprises of both protons and neutrons. The major mass of the atom lies in the nucleus.
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⨂ In an atom, the mass of the neutrons and protons give the atomic mass.
⨂ In a neutral atom, the number of protons in the nucleus is equal to the number of protons in the nucleus.
⨂ Ernest Rutherford discovered the nucleus of an atom in 1909.
⨂ Eugen Goldstein discovered the protons using the canal rays in 1886 and was later confirmed by Rutherford.
⨂ James Chadwick discovered the neutrons in an atom.
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