Atomic Structure Question 229

Question: The explanation for the presence of three unpaired electrons in the nitrogen atom can be given by [NCERT 1979; RPMT 1999; DCE 1999, 2002; CPMT 2001; MP PMT 2002; Pb. PMT / CET 2002]

Options:

A) Pauli’s exclusion principle

B) Hund’s rule

C) Aufbau’s principle

D) Uncertainty principle

Show Answer

Answer:

Correct Answer: B

Solution:

Hund-s rule states that pairing of electrons in the orbitals of a subshell (orbitals of equal energy) starts when each of them is singly filled.



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