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1) 1837 times
4)Electron
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Hii Lagan ✌
1. The mass of proton was approximately 1837 times as that of electron.
2. The mass of a proton is taken as 1 amu unit and its charge as +1 e.
3. J.J. Thomson noticed and identified electrons in an atom in 1900.
4. Electrons are negatively charged particles present in an atom.
5. The proton has a charge, equal in magnitude but opposite nature in to that of the electron
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