The chemical behavior of an atom is determined by its

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The chemical behavior of an atom is primarily determined by its atomic number, which represents the number of protons in its nucleus. The number of protons determines the element that the atom represents, and elements have distinct chemical properties based on the number of valence electrons they have. Mass number, binding energy, and number of isotopes may affect the stability or reactivity of an atom, but they do not determine its chemical behavior.

The Chemical Behavior of an Atom Is Determined by Its