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Manipal MET2021ChemistryStructure of Atom

Which of the following set of quantum number is not applicable for an electron in an atom?

Options

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

Correct answer

A. n=1, l=1, m=1, s=+ 1 2

Step-by-step solution

For a given n value possible l values are 0 to (n-1) possible m values for a given l value is -l, 0,+I and value of s for an electron =+ 1 2 or - 1 2 . So for n=1, I=0 not 1 and m=0 not 1 .

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