An atom that gained an electron will become

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Multiple Choice

An atom that gained an electron will become

Explanation:
Gaining an electron increases the number of negative charges around the nucleus while the positive charge from the nucleus remains the same, so the overall charge becomes negative. That’s why the atom becomes negatively charged (an anion). Neutral would require equal numbers of protons and electrons. Positively charged would happen if the atom lost electrons, not gained them. “Electron-rich” isn’t a standard way to describe the net charge.

Gaining an electron increases the number of negative charges around the nucleus while the positive charge from the nucleus remains the same, so the overall charge becomes negative. That’s why the atom becomes negatively charged (an anion). Neutral would require equal numbers of protons and electrons. Positively charged would happen if the atom lost electrons, not gained them. “Electron-rich” isn’t a standard way to describe the net charge.

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