Problem: What is the ground-state electron configuration of the chloride ion Cl−?The electron configuration of an atom tells us how many electrons are in each orbital. For example, helium has two electrons in the 1s orbital. Therefore the electron configuration of He is 1s2.

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What is the ground-state electron configuration of the chloride ion Cl?


The electron configuration of an atom tells us how many electrons are in each orbital. For example, helium has two electrons in the 1s orbital. Therefore the electron configuration of He is 1s2.

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