Q. Which one of the following oxides of nitrogen dimerises into a colourless solid /liquid on cooling?
A) N_{2}O
B) NO
C) N_{2}O_{3}
D) NO_{2}
Explanation
(d)
NO_{2} is brown reactive gas with pungent odour, paramagnetic but dimerise to solid N_{2}O_{4.}
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.