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JEE Main202225 Jul 2022Morning ShiftChemistryStructure of AtomActual

Which of the following sets of quantum numbers is not allowed?

Options

  1. An = 3 ,   l = 2 ,   m l = 0 ,   s = + 1 2
  2. Bn = 3 ,   l = 2 ,   m l = - 2 ,   s = + 1 2
  3. Cn = 3 ,   l = 3 ,   m l = - 3 ,   s = - 1 2
  4. Dn = 3 ,   l = 0 ,   m l = 0 ,   s = - 1 2

Correct answer

C. n = 3 ,   l = 3 ,   m l = - 3 ,   s = - 1 2

Step-by-step solution

The possible values of principal quantum number ' n ' can be any positive integer. For a particular value of ' n ' , the possible values of azimuthal quantum number is from 0 to n - 1 . Thus, for n = 3 , the possible ' l ' values are 0 ,   1 ,   2 . The possible values of magnetic quantum number ' m ' is from ' - l ' to ' + l ' . Thus, for l = 2 , the possible values of ' m ' are - 2 ,   - 1 ,   0 ,   + 1 ,   + 2 . The possible va

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