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What makes an atom stable? a. Having the nucleus in the center b. Being very small c. Being neutral d. Having the ri
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D
Explanation:
An atom is stable if the forces among the particles that makeup the nucleus are balanced. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom’s nucleus may result from an excess of either neutrons or protons.