Which ion is formed when chlorine gains an electron?

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Multiple Choice

Which ion is formed when chlorine gains an electron?

Explanation:
Gaining an electron allows chlorine to complete its outer shell and acquire an extra negative charge, becoming the chloride ion (Cl−). This is the species formed when chlorine takes in one more electron. The other descriptions correspond to different scenarios—Cl2 is a diatomic molecule, a chlorine radical has an unpaired electron in a neutral atom, and a chlorine cation would result from losing an electron. So the ion formed by gaining an electron is the chloride ion.

Gaining an electron allows chlorine to complete its outer shell and acquire an extra negative charge, becoming the chloride ion (Cl−). This is the species formed when chlorine takes in one more electron. The other descriptions correspond to different scenarios—Cl2 is a diatomic molecule, a chlorine radical has an unpaired electron in a neutral atom, and a chlorine cation would result from losing an electron. So the ion formed by gaining an electron is the chloride ion.

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