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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