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Standard IX
Chemistry
Quantum Number
Question

Which of the following sets of quantum numbers is correct for an electron in 4f orbital?
  1. n = 4, l = 4, m = - 4, s =+12
  2. n = 4, l = 3, m = + 4, s =+12
  3. n = 4, l = 3, m = + 1, s =+12
  4. n = 4, l = 2, m = 2, s =+12

A
n = 4, l = 2, m = 2, s =+12
B
n = 4, l = 3, m = + 4, s =+12
C
n = 4, l = 3, m = + 1, s =+12
D
n = 4, l = 4, m = - 4, s =+12
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Solution
Verified by Toppr

For any orbital with n,l,m:

0≤l<n

−l≤m≤l

ms=+1/2ors=−1/2

For 4f orbital, n=4,l=3

Option C is correct.

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


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