Nucleus - most of an atom's mass is located here, Electron Cloud - location of electrons , Proton - positive charge, mass of 1 - proton and neutron, protons and neutrons - located in the nucleus, neutron - has no charge, symbol of particle which identifies the atom - p+, symbol of particle which has a mass of 1 amu and no charge - n 0, symbol of particle which is not in the nucleus - e -, identifies an element - atomic number, electrons - the number of protons is also equal to the number of,

Subatomic Particles

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