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.