Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because of _________.
In the environment, 78% of dinitrogen gas and 21% of dioxygen gas is present still cannot react because the reaction is endothermic and requires very high temperature. Nitrogen oxide is formed at a very high temperature.
(ii) The catalyst lowers the energy of formation. Here only in the presence of a catalyst, the reaction cannot be initiated.
(iii) Oxides of nitrogen like NO2 is resonance stabilized and some others are relatively unstable.