20. 下列哪一組量子數是不被允許的？

I. n = 3, l = 3, ml = −1, ms = +1/2
II. n = 4, l = 3, ml = 2, ms = −1/2
III. n = 4, l = 1, ml = −1, ms = +1/2
IV. n = 5, l = −4, ml = 2, ms = +1/2
V. n = 3, l = 1, ml = 2, ms = +1/2
(A) I, II, III
(B) I, IV, V
(C) II, III, IV
(D) III, IV, V

答：(B)　量子數規則：n 為正整數；l...