Final answer:
Valence electrons, electronegativity, and atomic number are key factors that influence an atom's chemical behavior.
Explanation:
Valence electrons are the key factor determining whether an atom will donate, accept, or share electrons in a chemical bond. Atoms with full outer shells are stable and unlikely to participate in chemical reactions, while those with incomplete outer shells are reactive.
Electronegativity is another important property that influences an atom's tendency to interact with other atoms in bond formation. It measures an atom's ability to attract electrons within a chemical bond.
Atomic number plays a crucial role as well, as it determines the number of protons in the nucleus, which in turn influences the atom's chemical properties and behavior.
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