MCAT Organic Chemistry Question 37: Answer and Explanation
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Question: 37
7. Molecular orbitals can contain a maximum of:
- A. one electron.
- B. two electrons.
- C. four electrons.
- D. 2n2 electrons, where n is the principal quantum number of the combining atomic orbitals.
Correct Answer: B
Explanation:
Like atomic orbitals, molecular orbitals each can contain a maximum of two electrons with opposite spins. The 2n2 rule in choice (D) refers to the total number of electrons that can exist in a given energy shell, not in a molecular orbital.