Suggest why the nitrogen molecule, $\text{N}_2$, shows such low reactivity.
Write an equation showing one possible reaction between nitrogen and oxygen.
State two situations, one natural and one caused by human activity, in which nitrogen and oxygen react together.
State the main environmental effect of nitrogen oxides in the atmosphere.
Describe and explain how the basicities of ethylamine and phenylamine compare with ammonia.
Compound X is a useful intermediate in pharmaceutical synthesis. X can be made from chloromethylbenzene using the following scheme. (i) What type of reaction is each of the following? step 1 step 2 (ii) Suggest reagents and conditions for step 1, step 2. (iii) Draw the structures of the intermediates T and W in the boxes above.