Which of the following combinations of quantum numbers is not allowed? (Combinations are listed as follows: n, l, m₍_l₎, m₍_s).) A) 4 0 0 -1/2 B) 5 3 1 -1/2 C) 4 1 1 1/2 D) 3 1 0 1/2 E) 3 3 0 -1/2

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Quizplus · Accepted Answer

For l = 3, the possible values of m_l are -3, -2, -1, 0, 1, 2, 3. Therefore, a combination of n = 3, l = 3, and m_l = 0 is allowed. The only quantum number that has restrictions on its possible values is m_s, which can only be +1/2 or -1/2. Therefore, the only combination that is not allowed is E, since it has m_s = -3/2.

Which of the Following Combinations of Quantum Numbers Is Not