Nitrogen dioxide is the chemical compound with the formula NO2. It is one of several nitrogen oxides. NO2 is an intermediate in the industrial synthesis of nitric acid, millions of tons of which are produced each year. This reddish-brown toxic gas has a characteristic sharp, biting odor and is a prominent air pollutant. Nitrogen dioxide is a paramagnetic bent molecule with C2v point group symmetry.
Nitrogen dioxide has a molar mass of 46.0055, wh...
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Nitrogen dioxide is the chemical compound with the formula NO2. It is one of several nitrogen oxides. NO2 is an intermediate in the industrial synthesis of nitric acid, millions of tons of which are produced each year. This reddish-brown toxic gas has a characteristic sharp, biting odor and is a prominent air pollutant. Nitrogen dioxide is a paramagnetic bent molecule with C2v point group symmetry.
Nitrogen dioxide has a molar mass of 46.0055, which makes it heavier than air, whose average molar mass is 28.8. According to the ideal gas law, NO2 is therefore more dense than air.
The bond length between the nitrogen atom and the oxygen atom is 119.7 pm. This bond length is consistent with a bond order of one and a quarter, as in ozone (O3).
The ground electronic state of nitrogen dioxide is a doublet state, since there is one unpaired bonding electron delocalised over both bonds, hence the bond order of one and a quarter.
NO2 exists in equilibrium with the colourless gas dinitrogen...
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