What does Hund's rule state? A. An orbital can contain two electrons only if the electrons have opposite spins. B. An orbital can contain two electrons only if all other orbitals at that sublevel are empty. C. An orbital can contain two electrons only if the electrons have different energy levels. D. An orbital can contain two electrons only if all other orbitals in that sublevel contain at least one electron.

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30 December, 04:16

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Paige Reeves · Answer 1

The answer is D. The rules states that every orbital on every sub level must be occupied before any can be double occupied.