Question

Which of the following properties is not shown by $NO$?

• A. It is paramagnetic in liquid state
• B. It is a neutral oxide
• C. It combines with oxygen to form nitrogen dioxide
• D. Its bond order is $2.5$

Answer 1

The correct option is A It is paramagnetic in liquid state

$NO$ is para mag netic in gas eous state be cause in gas eous state, it has one un paired elec tron. Total number of electrons present $=7+8=15e^{-}$. Hence, there must be the presence of unpaired electron in gaseous state while in liquid state, it dimerises due to unpaired electron.