Structure of Atom - Result Question 42

####46. Which of the following is not permissible arrangement of electrons in an atom?

[2009]

(a) n=5,l=3,m=0,s=+1/2

(b) n=3,l=2,m=3,s=1/2

(c) n=3,l=2,m=2,s=1/2

(d) n=4,l=0,m=0,s=1/2

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Solution:

  1. (b) m=2l+1, thus for l=2,m=5, hence values of m will be 2,1,0,+1,+2.

Therefore for l=2,m cannot have the value -3 .



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