Easy MCQ +4 / -1 PYQ · JEE Mains 2022

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

  1. A $\mathrm{n}=3,1=2, \mathrm{~m}_{\mathrm{l}}=0, \mathrm{~s}=+\frac{1}{2}$
  2. B $$ \mathrm{n}=3, \mathrm{l}=2, \mathrm{~m}_{\mathrm{l}}=-2, \mathrm{~s}=+\frac{1}{2} $$
  3. C $$ \mathrm{n}=3, \mathrm{l}=3, \mathrm{~m}_{\mathrm{l}}=-3, \mathrm{~s}=-\frac{1}{2} $$ Correct answer
  4. D $\mathrm{n}=3, \mathrm{l}=0, \mathrm{~m}_{1}=0, \mathrm{~s}=-\frac{1}{2}$

Solution

If $n=3$, then possible values of $l=0,1,2$ <br/><br/> But in option (C), the value of $\mathrm{l}$ is given ' 3 ', this is not possible.

About this question

Subject: Chemistry · Chapter: Atomic Structure · Topic: Bohr's Model

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