Exclusion Principle: The orbital angular momentum quantum number can take which of the following values for any given value of the principal quantum number, n?
A. ? = 0, 1, 2, . . .
B. ? = 0, 1, 2, . . . , n
C. ? = 0, 1, 2, . . . , (n - 1)
D. ? = 1, 2, 3, 4, . . .
E. ? = 1, 2, 3, 4, . . ., (n + 1)
Answer: C
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