Structure of Atom

Structure of Atom

Question

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

  • n = 4, I =3, m = +4, s = + 1/ 2

  • n = 3, I = 2, m = -2, S = + 1/2

  • n =4, I = 3, m = +1, s = + 1/ 2

  • n =4, I = 4, m -4, s = -1/ 2

Answer

C.

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

For 4f orbital electrons, n = 4

                       s p d f

l = 3 (because 0 1 2 3 )

m = +3, +2, +1, 0, –1, –2, –3

s = ±1/2.

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