What is atom, neutron, proton and electron?
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Atom:
The smallest unit of an element which may or may not have an independent existence, but always takes part in a chemical reaction is called atom.
Neutron:
A subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
Proton:
A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.
Electron:
A stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
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