Published by:
CGP EDU Academic Team
Published on: August 13, 2026
If the nitrogen atom has electronic configuration 
, it would have energy lower than that of the normal ground state configuration 
, because the electrons would be closer to the nucleus. Yet 
is not observed because it violates.
Text Solution
Verified by ExpertsThe correct answer is:
C
As per Pauli exclusion principle, "no two electrons in an atom can have all the four quantum numbers equal or an orbital cannot contain more than two electrons and it can accommodate two electrons only when their directions of spin are opposite".
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