Free radicals are also important

Question

in many environmentally significant reactions.
For example, photochemical smog, which forms
as a result of the action of sunlight on air pollutants,
is formed in part by the following two steps.
X
NO2 NO � O
O � O2 O3
UV light
� Ozone damages rubber products.
The product of this reaction, ozone, is a pollutant in
the lower atmosphere. Ozone is an eye and lung irritant
and also accelerates the weathering of rubber
products. Write Lewis structures for each of the reactants
and products in the preceding reactions.