Nitrogen oxide
Nitrogen oxide may refer to a binary compound of oxygen and nitrogen, or a mixture of such compounds: == Charge-neutral == Nitric oxide (NO), nitrogen(II) oxide, or nitrogen monoxide Nitrogen dioxide (NO2), nitrogen(IV) oxide Nitrogen trioxide (NO3), or nitrate radical Nitrous oxide (N2O), nitrogen(0,II) oxide Dinitrogen dioxide (N2O2), nitrogen(II) oxide dimer Dinitrogen trioxide (N2O3), nitrogen(II,IV) oxide Dinitrogen tetroxide (N2O4), nitrogen(IV) oxide dimer Dinitrogen pentoxide (N2O5), nitrogen(V) oxide, or nitronium nitrate [NO2]+[NO3]− Nitrosyl azide (N4O), nitrogen(−I,0,I,II) oxide Nitryl azide (N4O2) Oxatetrazole (N4O) Trinitramide (N(NO2)3 or N4O6), nitrogen(0,IV) oxide == Anions == == Cations == Nitrosonium (N≡O+ or [NO]+) Nitronium (O=N+=O or [NO2]+) == Atmospheric sciences == In atmospheric chemistry: NOx (or NOx) refers to the sum of NO and NO2. NOy (or NOy) refers to the sum of NOx and all oxidized atmospheric odd-nitrogen species (e.g.