• # question_answer Which of the following oxide is diamagnetic [MP PET 1990] A) $NO$ B) $N{{H}_{3}}$ C) ${{N}_{2}}{{H}_{4}}$ D) ${{N}_{2}}{{H}_{2}}$

There are no free electron in ${{N}_{2}}{{O}_{4}}$, so it is dimagnetic in nature.