In the quantum mechanical treatment of the hydrogen atom, which one of the following combinations of quantum numbers is not allowed?
A. 3, 1, -1
B. 3, 2, 2
C. 3, 2, -1
D. 3, 3, 2
Correct Answer: D. 3, 3, 2
A. 3, 1, -1
B. 3, 2, 2
C. 3, 2, -1
D. 3, 3, 2