Question

Which of the following set of quantum numbers (ordered n, ℓ, mℓ, ms) are possible for an electron in an atom? Check all that apply. 2, 4, 1, -1/2 -2, 1, 0, -1/2 3, 2, 0, -1/2 3, 2, -3, 1/2 3, 2, 0, -2 5, 3, -3, 1/2 2, 1, 0, 1/2 5, 3, 4, 1/2

Answer 1

in general , possible quantum numbers is n,l,ml , s

n = 1,2,3, .....etc

l = 0 to n-1.

ml = -l......... 0 .......... + l

s = +1/2 (or) - 1/2

so that

a.     2, 4, 1, -1/2 = not possible

b. -2, 1, 0, -1/2 = not possible

c.   3, 2, 0, -1/2 = = possible

d.   3, 2, -3, 1/2 = not possible

e.   3, 2, 0, -2 = not possible

f.    5, 3, -3, 1/2 = possible

g. 2, 1, 0, 1/2 = not possible

h.   5, 3, 4, 1/2= possible