Generally used: NOx
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The nitrogen oxides that have the same empirical formula are nitric oxide (NO) and nitrogen dioxide (NO2). Both have a 1:1 ratio of nitrogen to oxygen atoms.
Nitrogen is the seventh element on the periodic table. Its symbol is the capital letter N.
The symbol for nitrogen oxide is NO.
Large scale generation of sulfur oxides is easier to control than the generation of nitrogen oxides because sulfur oxides can be removed from emissions using flue gas desulfurization systems, whereas removing nitrogen oxides requires more complex and expensive technologies like selective catalytic reduction. Sulfur oxides are also heavier than nitrogen oxides, making them easier to capture and control.
Nitrogen oxides are produced by the combustion of fossil fuels in vehicles, power plants, and industrial processes. When these fuels are burned at high temperatures, nitrogen and oxygen in the air react to form nitrogen oxides. Lightning and certain microbial processes can also contribute to the production of nitrogen oxides in the atmosphere.