What is the ground-state electronic configuration of a chlorine anion (Cl^-)? A)1s²,2s²,2p⁶ B)1s²,2s²,2p⁶,3s²,3p⁶ C)1s²,2s²,2p⁶,3s²,3p⁵ D)1s²,2s²,2p⁶,3s²,3p⁴

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A chlorine anion (Cl^-) has gained an extra electron compared to a neutral chlorine atom, resulting in the electronic configuration of 1s², 2s², 2p⁶, 3s², 3p⁶, which is the same as the noble gas argon.

What Is the Ground-State Electronic Configuration of a Chlorine Anion