Chemical Bonding and Molecular Structure - Result Question 123

####127. Which of the following species is paramagnetic?

(a) $O_2^{2-}$

(b) NO

(c) $CO$

(d) $CN^{-}$

[1995]

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Solution:

  1. (b) The structure of NO:

${ }^{*} N=\ddot{0}$

In $NO$, the presence of unpaired electron is clear. Therefore, it is paramagnetic.



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