Question

Statement (A) Among the oxides of nitrogen, $NO$ and $NO _{2}$ are paramagnetic.
Statement (B) NO is paramagnetic in the gaseous state and diamagnetic in liquid state. The correct answer is

• A. (A) is correct, (B) is not correct
• B. Both (A) and (B) are not correct
• C. (A) is not correct, (B) is correct
• D. Both (A) and (B) are correct

Answer 1

Answer: (D)

Statement (A) Among the oxides of nitrogen, $NO$ and $NO _{2}$ are paramagnetic is the correct statement as $N$ -atom contains unpaired electrons in its structure.



Statement (B) $ NO$ is paramagnetic in gaseous state and diamagnetic in liquid-state is also the correct statement as $NO$ in liquid state exists as dimer with no unpaired electron in the structure.