Valence electrons are the key to an atom's reactivity. Atoms tend to gain, lose, or share valence electrons to achieve a stable electron configuration, usually resembling that of noble gases.
The chemical behavior of an atom is mostly determined by its
Asked in ASO 2025 · Topic: Atomic Structure (Electronic Configuration Principles (Aufbau Principle, Pauli's Exclusion Principle, Hund's Rule))
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