Atomic Structure Question 203
Question: The number of unpaired electrons in nitrogen is [Pb. CET 2002]
Options:
A) 1
B) 3
C) 2
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
According to Hund’s rule, the pairing of electrons will not occur in any orbital of a subshell unit and unless, all the available of it have one electron each. Electronic configuration of $ _7N^{14}=1,s^{2},,2s^{2},,2p_x^{1}2p_y^{1}2p_z^{1} $
Hence it has 3 unpaired electron in 2p-orbital.
BETA
