Final answer:
The chemical formula of ozone is O₃, which refers to a molecule that contains three oxygen atoms. This is different from other potential answer choices provided, such as CO, H₂O, and C₆H₁₂O₆, which represent carbon monoxide, water, and glucose, respectively.
Step-by-step explanation:
The chemical formula of ozone is O₃. Tropospheric ozone, or ground-level ozone, is an atmospheric pollutant found in the lower atmosphere and is different from the stratospheric ozone that forms the ozone layer and protects us from the sun's harmful ultraviolet rays. This ground-level ozone is not emitted directly into the air but is formed by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight. Emissions from industrial facilities, motor vehicle exhaust, and other sources contribute to the formation of this pollutant. Ozone at ground level can cause respiratory health problems and damage vegetation and ecosystems.