Question

Which of the following sets of quantum numbers is correct for an electron in 4f orbital?

• A. n=4, 1=3, m=+1, s=+1/2
• B. n=4, 1=4, m=-4, s=-1/2
• C. n=4, 1=3, m=+4, s=+1/2
• D. n=3, 1=2, m=-2, s=+1/2

Answer 1

The correct option is A

n=4, 1=3, m=+1, s=+1/2

The possible quantum numbers for 4f electron are
n=4, l=3, m=-3, -2, -1, 0, 1, 2, 3 and $s=\pm \frac{1}{2}$