Atomic Structure Question 254
Question: The electronic configuration of an element with atomic number 7 i.e. nitrogen atom is [CPMT 1982, 84, 87]
Options:
A) $ 1s^{2},2s^{1},2p_x^{3} $
B) $ 1s^{2},2s^{2}2p_x^{2}2p_y^{1} $
C) $ 1s^{2},2s^{2}2p_x^{1}2p_y^{1}2p_z^{1} $
D) $ 1s^{2},2s^{2}2p_x^{1}2p_y^{2} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ _7N=1s^{2},2s^{2}2p_x^{1},,2p_y^{1},,2p_z^{1} $ . 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.
