AP Chemistry
1.8 Valence Electrons and Ionic Compounds
1.7 Periodic Trends
A sample of gaseous selenium atoms, \(\text{Se}\), is subjected to conditions that produce both \(\text{Se}^{2+}\) cations and \(\text{Se}^{2-}\) anions. Which of the following correctly predicts the relative sizes of the species from smallest to largest radius, and provides the correct justification?
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