Editing Nitrogen oxide

{{For|the air pollutants|Nitrogen oxides}}
'''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]] ({{chem2|NO2}}), nitrogen(IV) oxide
*[[Nitrogen trioxide]] ({{chem2|NO3}}), or nitrate radical
*[[Nitrous oxide]] ({{chem2|N2O}}), nitrogen(0,II) oxide
*[[Dinitrogen dioxide]] ({{chem2|N2O2}}), nitrogen(II) oxide [[Dimer (chemistry)|dimer]]
*[[Dinitrogen trioxide]] ({{chem2|N2O3}}), nitrogen(II,IV) oxide
*[[Dinitrogen tetroxide]] ({{chem2|N2O4}}), nitrogen(IV) oxide [[Dimer (chemistry)|dimer]]
*[[Dinitrogen pentoxide]] ({{chem2|N2O5}}), nitrogen(V) oxide, or nitronium nitrate {{chem2|[NO2]+[NO3]−}}
*[[Nitrosyl azide]] ({{chem2|N4O}}), nitrogen(−I,0,I,II) oxide
*[[Nitryl azide]] ({{chem2|N4O2}})
*[[Oxatetrazole]] ({{chem2|N4O}})
*[[Trinitramide]] ({{chem2|N(NO2)3}} or {{chem2|N4O6}}), nitrogen(0,IV) oxide

==Anions==
{|class="wikitable"
!Name!!Formula
|-
|[[Nitroxyl|Nitroxide]]|| {{chem2|O\dN−}} or {{chem2|NO-}}
|-
|[[Nitrite]]|| {{chem2|O\dN\sO-}} or {{chem2|NO2-}}
|-
|[[Nitrate]]|| {{chem2|O2N\sO-}} or {{chem2|NO3-}}
|-
|[[Peroxynitrite]]|| {{chem2|O\dN\sO\sO-}} or {{chem2|NO3-}}
|-
|[[Peroxynitrate]]|| {{chem2|O2N\sO\sO-}} or {{chem2|NO4-}}
|-
|[[Orthonitrate]]|| {{chem2|+N(\sO−)4}} or {{chem2|NO4(3-)}}
|-
|[[Hyponitrite]]|| {{chem2|-O\sN\dN\sO-}} or {{chem2|N2O2(2-)}}
|-
|[[Trioxodinitrate]] or hyponitrate|| {{chem2|O\dN\sN(\sO−)2}} or {{chem2|N2O3(2-)}}
|-
| [[Nitroxylate]]|| {{chem2|(-O\s)2N\sN(\sO-)2}} or {{chem2|N2O4(4-)}}
|-
|[[Ammonium dinitramide|Dinitramide]]|| {{chem2|O2N\sN-\sNO2}} or {{chem2|N3O4-}}
|}

==Cations==
*[[Nitrosonium]] ({{chem2|N\tO+}} or {{chem2|[NO]+}})
*[[Nitronium ion|Nitronium]] ({{chem2|O\dN+\dO}} or {{chem2|[NO2]+}})

==Atmospheric sciences==
In [[atmospheric chemistry]]:
*[[NOx|{{chem2|NO_{''x''}|}}]] (or NO''x'') refers to the sum of [[nitric oxide|NO]] and [[nitrogen dioxide|{{chem2|NO2}}]].<ref>[[United States Clean Air Act]], {{USC|42|7602}}</ref><ref>
{{Citation
|last = Seinfeld
|first = John H.
|author-link = John H. Seinfeld
|last2 = Pandis
|first2 = Spyros N.
|title = Atmospheric Chemistry and Physics: From Air Pollution to Climate Change
|publisher = Wiley-Interscience
|year = 1997
|isbn = 0-471-17816-0
|url-access = registration
|url = https://archive.org/details/atmosphericchemi0000sein
}}
</ref>
*[[NOy|{{chem2|NO_{''y''}|}}]] (or NO''y'') refers to the sum of {{chem2|NO_{''x''}|}} and all oxidized atmospheric odd-nitrogen species (''e.g.'' the sum of {{chem2|NO_{''x''}|}}, [[Nitric acid|{{chem2|HNO3}}]], [[Nitrous acid|{{chem2|HNO2}}]], etc.)
*{{chem2|NO_{''z''}|}} (or NO''z'') = {{chem2|NO_{''y''}|}} − {{chem2|NO_{''x''}|}}

*[[Mixed Oxides of Nitrogen]] ("MON"): solutions of nitric oxide in dinitrogen tetroxide/nitrogen dioxide.


<gallery>
Image:Nitric-oxide-3D-vdW.png|{{center|'''[[Nitric oxide]]''', NO}}
Image:Nitrogen-dioxide-3D-vdW.png|{{center|'''[[Nitrogen dioxide]]''', {{chem2|NO2}}}}
Image:Nitrous-oxide-3D-vdW.png|{{center|'''[[Nitrous oxide]]''', {{chem2|N2O}}}}
Image:Dinitrogen-trioxide-3D-vdW.png|{{center|'''[[Dinitrogen trioxide]]''', {{chem2|N2O3}}}}
Image:Dinitrogen-tetroxide-3D-vdW.png|{{center|'''[[Dinitrogen tetroxide]]''', {{chem2|N2O4}}}}
Image:Dinitrogen-pentoxide-3D-vdW.png|{{center|'''[[Dinitrogen pentoxide]]''', {{chem2|N2O5}}}}
Image:Trinitramide-3D-spacefill.png|{{center|'''[[Trinitramide]]''', {{chem2|N4O6}}}}
</gallery>

==Stability==
Due to relatively weak N–O bonding, all nitrogen oxides are unstable with respect to {{chem2|N2}} and {{chem2|O2}}, which is the principle behind the [[catalytic converter]], and prevents the oxygen and nitrogen in the atmosphere from [[combusting]].

==See also==
*[[Nitrate]]
*[[Nitrogen oxide sensor]]
*[[Sulfur nitride]]s, which are valence [[Isoelectronicity|isoelectronic]] with nitrogen oxides

==References==
{{reflist}}

{{Chemistry index}}

{{Nitrogen compounds}}
{{Authority control}}

{{DEFAULTSORT:Nitrogen Oxide}}
[[Category:Industrial gases]]
[[Category:Nitrogen oxides|*]]