Atomic Structure Question 380

Question: Which of the following is not permissible arrangement of electrons in an atom-

Options:

A) $ n=5,l=3,m=0,s=+,1\text{/}2 $

B) $ n=3,l=2,\text{ m}=-,3,s=-1/2 $

C) $ n=3,l=2,\text{ m}=-,2,s=-1/2 $

D) $ n=4,l=0,\text{ m}=0,s=-1/2 $

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Answer:

Correct Answer: B

Solution:

  • $ m=-l $ to $ +l $ , through zero thus for $ l=2 $ , values of m will be $ -2,-1,0,+1,+2. $ Therefore for $ l=2 $ , m cannot have the value -3.


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