Chemical Bonding And Molecular Structure Ques 30
30. Which of the following species is paramagnetic?
[1995]
(a) $O_2^{2-}$
(b) NO
(c) $CO$
(d) $CN^{-}$
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Answer:
Correct Answer: 30.(b)
Solution:
(b) The structure of NO:

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