Which one of the atoms shown would be most likely to form a cation with a charge of +1?

Name: Which one of the atoms shown would be most likely to form a cation with a charge of +1?
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Question

Quizplus · Accepted Answer

The atom in choice A has 11 protons, which means it is sodium (Na). Sodium is in the first group of the periodic table, which means it has one valence electron. It is much easier for sodium to lose one electron than to gain seven, so it is more likely to form a cation with a charge of +1.

Which One of the Atoms Shown Would Be Most Likely