Which of the following sets of quantum numbers is not allowed?
A) n = 4, = 2,and = -2
B) n = 6, = 1,and = 1
C) n = 5, = 4,and = -4
D) n = 2, = 1,and = -3
E) n = 6, = 3,and = -2

Question

Which of the following sets of quantum numbers is not allowed?
A) n = 4, = 2,and = -2 
B) n = 6, = 1,and = 1 
C) n = 5, = 4,and = -4 
D) n = 2, = 1,and = -3 
E) n = 6, = 3,and = -2

Quizplus · Accepted Answer

The magnetic quantum number (m) can only take integer values between -l and +l (inclusive). In option D, the value of m for the second electron is -3, which is outside the allowed range (-1 to +1) for l = 1 (since n=2, maximum value of l=1). Therefore, option D is not allowed.

Which of the Following Sets of Quantum Numbers Is Not