Atomic Structure Question 202

Question: Nitrogen has the electronic configuration $ 1s^{2},2s^{2}2p_x^{1}2p_y^{1}2p_z^{1} $ and not $ 1s^{2},2s^{2}2p_x^{2}2p_y^{1}2p_z^{0} $ which is determined by

[DPMT 1982, 83, 89; MP PMT/PET 1988; EAMCET 1988]

Options:

A) Aufbau’s principle

B) Pauli’s exclusion principle

C) Hund’s rule

D) Uncertainty principle

Show Answer

Answer:

Correct Answer: C

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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