Nitriittiionit
Nitriittiionit are polyatomic anions with the chemical formula NO2-. They consist of one nitrogen atom covalently bonded to two oxygen atoms, with an overall negative charge. The nitrogen atom is in the +3 oxidation state. The ion is resonance-stabilized, meaning the negative charge is delocalized over both oxygen atoms. In terms of molecular geometry, the nitriittiion has a bent or V-shape due to the presence of a lone pair of electrons on the nitrogen atom.
Nitriittiionit are commonly found in the form of salts, such as sodium nitriitti (NaNO2) and potassium nitriitti
In the environment, nitriittiionit can be formed from the oxidation of ammonia, often as an intermediate in