Mass Number, Total number of protons and neutrons in an atom, Atomic Number, Indicates the number of protons in an atom, Protons, A positive subatomic particle with 1 amu,located inside the nucleus, Electrons, A negative subatomic particle with less than 1amu, located outside the nucleus, Nucleus, Located at the center of an atom and contains neutrons and protons, Electron Cloud, area that surrounds the nucleus and has electrons, Neutrons, A neutral subatomic particle with 1 amu ,located inside the nucleus, Atom, Tiny particles that make up all matter. Composed of nucleus and electron cloud

Atom Structure

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