Question

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

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

Answer 1

Answer: (C)

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

Answer 2

For 4 orbital electrons, n = 4

$\mathcal{l}$ = 3 (because ) m = + 3, + 2, + 1, 0, –1, –2, –3 s = +

1/2.