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Which of the following is the correct electron configuration for the As^{3-} ion?
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10. Periodic Properties of the Elements
The Electron Configuration
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Which electron configuration represents a violation of Hund's Rule?
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Step 1: Hund's Rule states that electrons must occupy all degenerate orbitals (orbitals of the same energy level) singly with parallel spins before pairing occurs. This minimizes electron repulsion and stabilizes the atom.
Step 2: Examine the given electron configurations in the images. Look for any configuration where electrons are paired in an orbital while other degenerate orbitals remain empty.
Step 3: In the first image, there is a configuration where two electrons are paired in one orbital, while another orbital of the same energy level is empty. This violates Hund's Rule.
Step 4: Compare this configuration to the others provided. Ensure that the violation is clear and consistent with the rule.
Step 5: Conclude that the configuration with paired electrons in one orbital and an empty degenerate orbital represents a violation of Hund's Rule.
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