An atom of an element consists of a unique combination of protons and electrons. The nucleus of an atom consists of protons and neutrons, and the electrons revolve around the nucleus in their orbits. The electrons are gained or lost to complete the octet and achieve a stable configuration.

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Chapter 2.1, Problem 5CC

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Introduction: An atom of an element consists of a unique combination of protons and electrons. The nucleus of an atom consists of protons and neutrons, and the electrons revolve around the nucleus in their orbits. The electrons are gained or lost to complete the octet and achieve a stable configuration.

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