Which of following is paramagnetic ?

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4.Chemical Bonding and Molecular Structure

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Which of the following is paramagnetic ?

A

$NO^+$

B

$CO$

C

$O_2^-$

D

$CN^-$

Solution

Paramagnetism refers to the magnetic state of an atom with one or more unpaired electrons.

$O _{2}^{-}$ consists of one unpaired electrons.

Standard 11

Chemistry

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