(a)[1]
Suggest why the nitrogen molecule, $\text{N}_2$, shows so little reactivity.
(b(i))
Write an equation for one possible reaction between nitrogen and oxygen.
(b(ii))
State two circumstances, one natural and one caused by human activity, in which nitrogen and oxygen react together.
(b(iii))[4]
What is the principal environmental impact of nitrogen oxides in the atmosphere?
(c)[4]
Describe and explain how the basicities of ethylamine and phenylamine compare with that of ammonia.