Which element is most likely to form an ion with a −2 charge?

Name: Which element is most likely to form an ion with a −2 charge?
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Question

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Sulfur (S) is a nonmetal located in Group 16/Chalcogens of the periodic table, which commonly forms ions with a charge of -2 by gaining two electrons to achieve a stable octet electron configuration. The other options, K (potassium), Mg (magnesium), P (phosphorus), and Br (bromine), do not have a tendency to form ions with a -2 charge.

Which Element Is Most Likely to Form an Ion with a −2