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4.Chemical Bonding and Molecular Structure
medium
Which of the following molecule is paramagnetic
A
Chlorine
B
Nitrogen
C
Oxygen
D
Hydrogen
Solution
(c) Oxygen is paramagnetic due to the presence of two unpaired electron :
${O_2} = \sigma {(1s)^2}{\sigma ^ * }{(1s)^2}\sigma {(2s)^2}{\sigma ^ * }{(2s)^2}$ $\sigma {(2{p_x})^2}\pi {(2{p_y})^2}\pi {(2{p_x})^2}{\pi ^ * }{(2{p_y})^1}{\pi ^ * }{(2{p_z})^1}$
Standard 11
Chemistry
