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pauli exclusive principal

Pauli exclusive principal:

It state that an orbital cannot accomodate more than two electron .they should be opposite spin.

Question:
Define pauli exclusive principal on the basis of quantum number ?
ans.
Two electron in an atom cannot be completly identically i. e no two electron in an atom can have same value all the four quantum no.
          

from picture


for left side spin                      for right side spin
n=4                                             n=4    
l=0, 1,2,3                                    l=0, 1,2,3
for s than                                  for s than
l=0                                               l=0           
m=0                                             m=0
s=+1/2                                          s=-1/2

 Energy is inversely proportional to Stability. which shown in picture. 
                 
                
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