Question 30 of 62intermediate🔍 AnalyzeShort Answer2 marks
Explain, giving reasons, which of the following sets of quantum numbers are not possible. (a) n = 0, l = 0, mₗ = 0, mₛ = +1/2 (b) n = 1, l = 0, mₗ = 0, mₛ = –1/2 (c) n = 1, l = 1, mₗ = 0, mₛ = +1/2 (d) n = 2, l = 1, mₗ = 0, mₛ = –1/2
(a)
(b)
(c)
(d)
Explanation
Sets (a) and (c) violate the fundamental rules for quantum numbers. In set (a), the principal quantum number n cannot be zero. In set (c), the azimuthal quantum number l must be less than n, so for n = 1, l can only be 0.