Chemical Bonding And Molecular Structure Question 318
Question: Which of the following molecule is paramagnetic [CPMT 1980; RPET 1999;MP PMT 1999; RPMT 2000]
Options:
A) Chlorine
B) Nitrogen
C) Oxygen
D) Hydrogen
Show Answer
Answer:
Correct Answer: C
Solution:
Oxygen is paramagnetic due to the presence of two unpaired electron: $ O_2=\sigma {{(1s)}^{2}}{{\sigma }^{*}}{{(1s)}^{2}}\sigma {{(2s)}^{2}}{{\sigma }^{*}}{{(2s)}^{2}} $
$ \sigma {{(2p_{x})}^{2}}\pi {{(2p_{y})}^{2}}\pi {{(2p_{x})}^{2}}{{\pi }^{*}}{{(2p_{y})}^{1}}{{\pi }^{*}}{{(2p_{z})}^{1}} $
