Home / Chemistry / The Air-Quality Index measures exposure in the air at ground-level to which chemical?
The Air-Quality Index measures exposure in the air at ground-level to which chemical?
Ozone (), or trioxygen, is an inorganic molecule with the chemical formula O3. It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O2, breaking down in the lower atmosphere to O2 (dioxygen). Ozone is formed from dioxygen by the action of ultraviolet (UV) light and electrical discharges within the Earth's atmosphere.
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