Answer :
| Electrons | Protons | Neutron |
| Electrons are Negatively charged particles Electrons are present in outer shells with in an atom and revolve around the nucleus in well-defined orbits or discrete orbits The mass of an electron is about 1/ 2000 times the mass of an hydrogen atom. A electron is represented as 'e-' | Protons are Positively charged particles. Protons are present in the nucleus of all atoms Number of protons determines the atomic number of an element The mass of a proton is taken as one unit and equals to neutron. A proton is represented as 'p+' | Neutrons do not carry any charge and are neutral. Neutrons are present in the nucleus of all atoms, except hydrogen The mass of a neutron is taken as one unit and equals to that of proton. A neutron is represented as 'n' |
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