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KCET2016ChemistryStructure of Atom

Consider the following sets of quantum numbers. Which of the below setting is not permissible arrangement of electrons in an atom?

Options

  1. A( n =4,1=0, ~m =0, ~s =-2 )
  2. B( n =5,1=3, ~m =0, ~s =+2 )
  3. C( n =3,1=2, ~m =-2, ~s =-2 )
  4. D( n =3,1=2, ~m =-3, ~s =+2 )

Correct answer

D. ( n =3,1=2, ~m =-3, ~s =+2 )

Step-by-step solution

The value of azimuthal quantum number ( l=n-1 ). The value of magnetic quantum number ( m₁=-l ) to ( +l ) array |l|l|l|l|l| Quantum Numbers & ( n ) & ( 1 ) & ( m₁ ) & ( m_ s ) PossibleValues & ( 3 ) & ( 0,1,2 ) & ( -2,-1,0,+1,+2 ) & ( + 1 2 ) and ( - 1 2 ) array Therefore, ( m₁=-3 ) is not possible for ( n=3 ).

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