Proton, Subatomic particle that is postively charged and weighs 1 amu, Neutron, Subatomic particle that is neutral and weighs 1 amu, Electron, Subatomic particle that is negatively charged with a negligible weight, Isotopes, Defined as atoms of the same element with a different number of neutrons, Electron Configuration, The arrangement of electrons in energy levels within an atom.

Atomic Structure

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