MCQ
Which of the following is paramagnetic ?
  • A
    $NO^+$
  • B
    $CO$
  • C
    $O_2^-$
  • $CN^-$

Answer

Correct option: D.
$CN^-$
d
Paramagnetism refers to the magnetic state of an atom with one or more unpaired electrons.

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

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