Proton | Neuton | Electron
An atom consist of three fundamental particles which are Proton, neutron, and electron.
Proton are present in the center of atom called nucleus, the total no of proton present in the center of atom is called its atomic no.
Neutron lies in the center of atom with proton, The no of neutron varies from atom to atom.
Electron lies around the nucleus in fixed circular path known as energy level or shell.
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