Which one of the following properties is not shown by `NO` ? .

Options

A. It is diamagnetic in gaseous state
B. It is neutral oxide
C. It combines with oxygen to form nitrogen dioxide
D. It's bond order is 2.5

Answer

A

Explanation

Nitric oxide is paramagnetic in the gaseous state ecause of the presence of one unpaired electron in its outermost shell.
The electronic configuration of NO is
`sigma(1s)^(2) sigma^(**) (1s)^(2) sigma(2s)^(2) sigma^(**)(2s)^(2) sigma(2p_(z))^(2) pi(2p_(x))^(2)`
`=pi(2p_(y))^(2) pi^(**)(2p_(x))^(1)=pi^(**)(2p_(y))^(0)`