Atomic Structure Question 412

Question: If the nitrogen atom had electronic configuration 1s7 it would have energy lower than that of the normal ground state configuration 1s22s22p3 because the electrons would be closer to the nucleus. Yet 1s7 is not observed. It violates

Options:

A) Heisenberg’s uncertainty principle

B) Hund’s rule

C) Pauli exclusion principle

D) Bohr postulate of stationary orbits

Show Answer

Answer:

Correct Answer: C

Solution:

  • Not more than two electrons can be present in same atomic orbital. This is Pauli’s exclusion principle.


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