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<div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chemical compound</div> <p> <style data-mw-deduplicate="TemplateStyles:r1084375498">.mw-parser-output .ib-chembox{border-collapse:collapse;text-align:left}.mw-parser-output .ib-chembox td,.mw-parser-output .ib-chembox th{border:1px solid #a2a9b1;width:40%}.mw-parser-output .ib-chembox td+td{width:60%}</style> </p> <table class="infobox ib-chembox"> <caption>Phosphorus monoxide </caption> <tbody><tr> <td colspan="2" style="text-align:center; padding:2px;"><span typeof="mw:File"><a href="/wiki/File:Phosphorus_Monoxide_Structure.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/Phosphorus_Monoxide_Structure.png/220px-Phosphorus_Monoxide_Structure.png" decoding="async" width="220" height="144" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/Phosphorus_Monoxide_Structure.png/330px-Phosphorus_Monoxide_Structure.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/13/Phosphorus_Monoxide_Structure.png/440px-Phosphorus_Monoxide_Structure.png 2x" data-file-width="890" data-file-height="584" /></a></span> </td></tr> <tr> <td colspan="2" style="text-align:center; padding:2px;"><span typeof="mw:File"><a href="/wiki/File:Phosphorus-monoxide-3D-vdW.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/39/Phosphorus-monoxide-3D-vdW.png/220px-Phosphorus-monoxide-3D-vdW.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/39/Phosphorus-monoxide-3D-vdW.png/330px-Phosphorus-monoxide-3D-vdW.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/39/Phosphorus-monoxide-3D-vdW.png/440px-Phosphorus-monoxide-3D-vdW.png 2x" data-file-width="802" data-file-height="600" /></a></span> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Names </th></tr> <tr> <td colspan="2" style="text-align:left;">Other names <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">oxophosphanyl; oxidophosphorus(.); Phosphoryl</div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Identifiers </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CAS_Registry_Number" title="CAS Registry Number">CAS Number</a></div> </td> <td><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span title="commonchemistry.cas.org"><a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/detail?cas_rn=14452-66-5">14452-66-5</a></span><sup id="cite_ref-NIST-2018_1-0" class="reference"><a href="#cite_note-NIST-2018-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">3D model (<a href="/wiki/JSmol" class="mw-redirect" title="JSmol">JSmol</a>)</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="chemapps.stolaf.edu (3D interactive model)"><a rel="nofollow" class="external text" href="https://chemapps.stolaf.edu/jmol/jmol.php?model=O%3D%5BP%5D">Interactive image</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChEBI" title="ChEBI">ChEBI</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.ebi.ac.uk"><a rel="nofollow" class="external text" href="https://www.ebi.ac.uk/chebi/searchId.do?chebiId=29315">CHEBI:29315</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChemSpider" title="ChemSpider">ChemSpider</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.chemspider.com"><a rel="nofollow" class="external text" href="https://www.chemspider.com/Chemical-Structure.5256764.html">5256764</a></span></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Gmelin_database" title="Gmelin database">Gmelin Reference</a></div> </td> <td>416 </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/PubChem" title="PubChem">PubChem</a> <abbr title="Compound ID">CID</abbr></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="pubchem.ncbi.nlm.nih.gov"><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/6857426">6857426</a></span></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CompTox_Chemicals_Dashboard" title="CompTox Chemicals Dashboard">CompTox Dashboard</a> <span style="font-weight:normal">(<abbr title="U.S. Environmental Protection Agency">EPA</abbr>)</span></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="comptox.epa.gov"><a rel="nofollow" class="external text" href="https://comptox.epa.gov/dashboard/chemical/details/DTXSID70425882">DTXSID70425882</a></span></li></ul></div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal; background:transparent;"><div><a href="/wiki/International_Chemical_Identifier" title="International Chemical Identifier">InChI</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">InChI=1S/OP/c1-2</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: LFGREXWGYUGZLY-UHFFFAOYSA-N</div></div></li></ul> </div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal; background:transparent;"><div><a href="/wiki/Simplified_molecular-input_line-entry_system" class="mw-redirect" title="Simplified molecular-input line-entry system">SMILES</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.6em; word-wrap:break-word; text-indent:-1.5em; text-align:left; font-size:97%; line-height:120%;">O=[P]</div></li></ul> </div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba; text-align: center;">Properties </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Chemical_formula" title="Chemical formula">Chemical formula</a></div> </td> <td>PO  </td></tr> <tr> <td colspan="2" style="text-align:left; background:#f8eaba; border:1px solid #a2a9b1;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Except where otherwise noted, data are given for materials in their <a href="/wiki/Standard_state" title="Standard state">standard state</a> (at 25 °C [77 °F], 100 kPa).</div> <div style="margin-top: 0.3em;"></div> <div style="margin-top: 0.3em; text-align: center;"><a href="/wiki/Wikipedia:Chemical_infobox#References" title="Wikipedia:Chemical infobox">Infobox references</a></div> </td></tr> </tbody></table><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chemical compound</div> <p><b>Phosphorus monoxide</b> is an unstable <a href="/wiki/Radical_(chemistry)" title="Radical (chemistry)">radical</a> <a href="/wiki/Inorganic_compound" title="Inorganic compound">inorganic compound</a> with molecular formula <a href="/wiki/Phosphorus" title="Phosphorus">P</a><a href="/wiki/Oxygen" title="Oxygen">O</a>.<sup id="cite_ref-EA-2019_2-0" class="reference"><a href="#cite_note-EA-2019-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Phosphorus monoxide is notable as one of the few molecular compounds containing <a href="/wiki/Phosphorus" title="Phosphorus">phosphorus</a> that has been detected outside of Earth. Other phosphorus containing molecules found in space include <a href="/wiki/Phosphorus_mononitride" title="Phosphorus mononitride">PN</a>, <a href="/wiki/Carbon_monophosphide" title="Carbon monophosphide">PC</a>, PC<sub>2</sub>, <a href="/wiki/Methylidynephosphane" title="Methylidynephosphane">HCP</a> and <a href="/wiki/Phosphine" title="Phosphine">PH<sub>3</sub></a>. It was detected in the <a href="/wiki/Circumstellar_shell" class="mw-redirect" title="Circumstellar shell">circumstellar shell</a> of <a href="/wiki/VY_Canis_Majoris" title="VY Canis Majoris">VY Canis Majoris</a> and in the star forming region catalogued as <a href="/w/index.php?title=AFGL_5142&action=edit&redlink=1" class="new" title="AFGL 5142 (page does not exist)">AFGL 5142</a>. The compound has been found to have been initially produced in <a href="/wiki/Star_formation#Stellar_nurseries" title="Star formation">star-forming regions</a>, and speculated to be carried by <a href="/wiki/Interstellar_comet" class="mw-redirect" title="Interstellar comet">interstellar comets</a> throughout <a href="/wiki/Outer_space" title="Outer space">outer space</a>, including to the <a href="/wiki/Early_Earth" title="Early Earth">early Earth</a>.<sup id="cite_ref-EA-2019_2-1" class="reference"><a href="#cite_note-EA-2019-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-PHYS-20200115_3-0" class="reference"><a href="#cite_note-PHYS-20200115-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-ARX-2019_4-0" class="reference"><a href="#cite_note-ARX-2019-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>Phosphorus monoxide plays a role in the phosphorescence of phosphorus. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Discovery">Discovery</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=1" title="Edit section: Discovery"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1894 <a href="/wiki/Walter_Noel_Hartley" title="Walter Noel Hartley">W. N. Hartley</a> was the first to report an observation of ultraviolet emission from a phosphorus compound, that was later expanded on by Geuter. The source of the spectral lines and bands were known to be related to phosphorus, but the exact nature was unknown. In 1927 <a href="/wiki/Harry_Julius_Emel%C3%A9us" title="Harry Julius Emeléus">H. J. Emeléus</a> and R. H. Purcell determined that the cause was a phosphorus oxide. But it was in 1921 that P. N. Ghosh and G. N. Ball determined that the oxide was phosphorus monoxide.<sup id="cite_ref-mous_5-0" class="reference"><a href="#cite_note-mous-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Phosphorus monoxide is believed to be the most abundant phosphorus-containing molecule found in <a href="/wiki/Interstellar_cloud" title="Interstellar cloud">interstellar clouds</a>.<sup id="cite_ref-Ligand_6-0" class="reference"><a href="#cite_note-Ligand-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Phosphorus was identified as a cosmically abundant element in 1998 after researchers found a cosmic ratio of phosphorus to hydrogen (P/H) of about 3×10<sup>−7</sup>. Even with the prevalence of phosphorus in interstellar clouds, very few phosphorus bearing molecules had been identified and found in very few sources; phosphorus nitride, PN, and the free radical CP were found in a carbon rich envelope of <a href="/w/index.php?title=IRC_%2B10215&action=edit&redlink=1" class="new" title="IRC +10215 (page does not exist)">IRC +10215</a> in 1987. This suggested that more phosphorus containing molecules had to be found in interstellar space. While examining the oxygen-rich shell of the supergiant star <a href="/wiki/VY_Canis_Majoris" title="VY Canis Majoris">VY Canis Majoris</a> (VY CMa) the presence of PO was detected. VY CMa was studied using the <a href="/wiki/Heinrich_Hertz_Submillimeter_Telescope" title="Heinrich Hertz Submillimeter Telescope">Submillimeter Telescope</a> (SMT) of the Arizona Radio Observatory (ARO). The telescope was able to observe the rotational frequencies of PO. ARO's 10 m SMT was able to measure the rotational transitions of PO showing J=5.5→4.5 at 240 GHz and J=6.5→5.5 at 284 GHz toward the evolved star, each consisting of well-defined lambda-doublets. Since the detection of PO towards the envelope of the VY CMa supergiant in 2001, PO has been found in many more interstellar clouds and is found in abundance around oxygen-rich shells.<sup id="cite_ref-Space_7-0" class="reference"><a href="#cite_note-Space-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Formation">Formation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=2" title="Edit section: Formation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>PO is formed when phosphorus is burnt in oxygen or ozone. It is a transient molecule observed in hot flames, or can be condensed into noble gas matrix.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> PO can be formed in an <a href="/wiki/Inert_gas_matrix" class="mw-redirect" title="Inert gas matrix">inert gas matrix</a> in the <a href="/wiki/Photodissociation" title="Photodissociation">photolysis</a> of P<sub>4</sub>S<sub>3</sub>O, a <a href="/w/index.php?title=Phosphorus_oxysulfide&action=edit&redlink=1" class="new" title="Phosphorus oxysulfide (page does not exist)">phosphorus oxysulfide</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>On Earth, phosphorus monoxide can be prepared for study by spraying <a href="/wiki/Phosphoric_acid" title="Phosphoric acid">phosphoric acid</a> into a flame. Because commercial <a href="/wiki/Acetylene" title="Acetylene">acetylene</a> gas contains some <a href="/wiki/Phosphine" title="Phosphine">phosphine</a>, an <a href="/wiki/Oxy-acetylene" class="mw-redirect" title="Oxy-acetylene">oxy-acetylene</a> flame will have weak PO emission bands in its spectrum also. In the flame, PO oxidises back to P<sub>4</sub>O<sub>10</sub>.<sup id="cite_ref-hara_10-0" class="reference"><a href="#cite_note-hara-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Reactions">Reactions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=3" title="Edit section: Reactions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Phosphorescence">Phosphorescence</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=4" title="Edit section: Phosphorescence"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>As white phosphorus oxidises it gives out a greenish-white glow. The glow happens as PO is oxidised by one of these reactions: PO + O<sup>•</sup> → PO<sub>2</sub>; or PO + O<sub>2</sub> →PO<sub>2</sub> + O<sup>•</sup>.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> The possible ways that PO appears in this process is by breakup of the P<sub>2</sub>O molecule which in turn may come from P<sub>4</sub>O.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Ligand">Ligand</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=5" title="Edit section: Ligand"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Phosphorus monoxide can act as a <a href="/wiki/Ligand" title="Ligand">ligand</a> on <a href="/wiki/Transition_element" class="mw-redirect" title="Transition element">transition elements</a> such as <a href="/wiki/Molybdenum" title="Molybdenum">molybdenum</a>, <a href="/wiki/Ruthenium" title="Ruthenium">ruthenium</a> and <a href="/wiki/Osmium" title="Osmium">osmium</a>. The phosphorus forms a <a href="/wiki/Triple_bond" title="Triple bond">triple bond</a> with the metal.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> The first to be discovered was on a <a href="/wiki/Nickel" title="Nickel">nickel</a>-<a href="/wiki/Tungsten" title="Tungsten">tungsten</a> cluster. The WNi<sub>2</sub>P<sub>2</sub> cluster was oxidised by a peroxide to yield a μ<sub>3</sub>-coordination, where each phosphorus atom is bound to three metal atoms.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Properties">Properties</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=6" title="Edit section: Properties"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Bond">Bond</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=7" title="Edit section: Bond"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Phosphorus monoxide is a <a href="/wiki/Free_radical" class="mw-redirect" title="Free radical">free radical</a> with <a href="/wiki/Phosphorus" title="Phosphorus">phosphorus</a> double bonded to <a href="/wiki/Oxygen" title="Oxygen">oxygen</a> with phosphorus having an unpaired <a href="/wiki/Valence_electron" title="Valence electron">valence electron</a>. The <a href="/wiki/Bond_order" title="Bond order">bond order</a> is about 1.8.<sup id="cite_ref-mous_5-1" class="reference"><a href="#cite_note-mous-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The P=O bond in PO has a dissociation energy of 6.4 eV.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> The bond length of the PO double bond is 1.476 Å, and free PO shows an infrared vibrational frequency of 1220 cm<sup>−1</sup> due to the stretching of the bond.<sup id="cite_ref-Structure_17-0" class="reference"><a href="#cite_note-Structure-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> The free radical nature of PO makes it highly reactive and unstable compared to other phosphorus oxides that have been further oxidized. </p> <div class="mw-heading mw-heading3"><h3 id="Spectrum">Spectrum</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=8" title="Edit section: Spectrum"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The visible to ultraviolet spectrum of phosphorus monoxide has three important bands. There is a continuum band near 540 nm. The β-system near 324 nm is due to the D<sup>2</sup>Σ→<sup>2</sup>Π transition. The γ-system has bands near 246 nm due to a A<sup>2</sup>Σ→<sup>2</sup>Π transition. Peaks in this band occur at 230, 238, 246, 253, and 260 nm in the ultraviolet. All these bands can be emission, absorption, or fluorescence depending on the method of illumination and temperature.<sup id="cite_ref-hara_10-1" class="reference"><a href="#cite_note-hara-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> There is also a C'<sup>2</sup>Δ state.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p><p>The γ-system band can be broken down into sub-bands based on the different vibrational transitions. (0,0), (0,1) and (1,0) are designations for the sub-bands produced by the transition between two vibration states, as the electronic transition occurs. Each of these contains eight series termed branches. These are <sup>o</sup>P<sub>12</sub>, P<sub>2</sub>, Q<sub>2</sub>, R<sub>2</sub>, P<sub>1</sub>, Q<sub>1</sub>, R<sub>1</sub> and <sup>s</sup>R<sub>21</sub>.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Molecule">Molecule</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=9" title="Edit section: Molecule"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The ionisation potential of PO is 8.39 eV. When ionised, PO forms the cation PO<sup>+</sup>. The adiabatic <a href="/wiki/Electron_affinity" title="Electron affinity">electron affinity</a> of PO is 1.09 eV. On gaining an electron the PO<sup>−</sup> ion forms.<sup id="cite_ref-mous_5-2" class="reference"><a href="#cite_note-mous-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>r<sub>e</sub> in the ground state is 1.4763735 Å.<sup id="cite_ref-mous_5-3" class="reference"><a href="#cite_note-mous-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>The dipole moment of the molecule is 1.88 D. The phosphorus atom has a slight positive charge calculated as 0.35 of the electron.<sup id="cite_ref-mous_5-4" class="reference"><a href="#cite_note-mous-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=10" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Nitric_oxide" title="Nitric oxide">Nitric oxide</a></li> <li><a href="/wiki/Phosphorus_mononitride" title="Phosphorus mononitride">Phosphorus mononitride</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phosphorus_monoxide&action=edit&section=11" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-NIST-2018-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-NIST-2018_1-0">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFStaff2018" class="citation web cs1">Staff (2018). <a rel="nofollow" class="external text" href="https://webbook.nist.gov/cgi/inchi/InChI%3D1S/OP/c1-2">"Phosphorus monoxide - NIST Chemistry WebBook, SRD 69"</a>. <i><a href="/wiki/National_Institute_of_Standards_and_Technology" title="National Institute of Standards and Technology">National Institute of Standards and Technology</a></i><span class="reference-accessdate">. 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href="/wiki/Chlorine_perchlorate" title="Chlorine perchlorate">Chlorine perchlorate</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Chloryl_perchlorate" class="mw-redirect" title="Chloryl perchlorate">Chloryl perchlorate</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O<sub>6</sub>)</li> <li><a href="/wiki/Cobalt(II,III)_oxide" title="Cobalt(II,III) oxide">Cobalt(II,III) oxide</a> (<a href="/wiki/Cobalt" title="Cobalt">Co</a><sub>3</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Dichlorine_pentoxide" title="Dichlorine pentoxide">Dichlorine pentoxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Iron(II,III)_oxide" title="Iron(II,III) oxide">Iron(II,III) oxide</a> (<a href="/wiki/Iron" title="Iron">Fe</a><sub>3</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Lead(II,IV)_oxide" title="Lead(II,IV) oxide">Lead(II,IV) oxide</a> (<a href="/wiki/Lead" title="Lead">Pb</a><sub>3</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Manganese(II,III)_oxide" title="Manganese(II,III) oxide">Manganese(II,III) oxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a><sub>3</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Mellitic_anhydride" title="Mellitic anhydride">Mellitic anhydride</a> (<a href="/wiki/Carbon" title="Carbon">C</a><sub>12</sub>O<sub>9</sub>)</li> <li><a href="/wiki/Praseodymium(III,IV)_oxide" title="Praseodymium(III,IV) oxide">Praseodymium(III,IV) oxide</a> (<a href="/wiki/Praseodymium" title="Praseodymium">Pr</a><sub>6</sub>O<sub>11</sub>)</li> <li><a href="/wiki/Silver(I,III)_oxide" title="Silver(I,III) oxide">Silver(I,III) oxide</a> (<a href="/wiki/Silver" title="Silver">Ag</a><sub>2</sub>O<sub>2</sub>)</li> <li><a href="/wiki/Terbium(III,IV)_oxide" title="Terbium(III,IV) oxide">Terbium(III,IV) oxide</a> (<a href="/wiki/Terbium" title="Terbium">Tb</a><sub>4</sub>O<sub>7</sub>)</li> <li><a href="/wiki/Tribromine_octoxide" title="Tribromine octoxide">Tribromine octoxide</a> (<a href="/wiki/Bromine" title="Bromine">Br</a><sub>3</sub>O<sub>8</sub>)</li> <li><a href="/wiki/Triuranium_octoxide" title="Triuranium octoxide">Triuranium octoxide</a> (<a href="/wiki/Uranium" title="Uranium">U</a><sub>3</sub>O<sub>8</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+1 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aluminium(I)_oxide" title="Aluminium(I) oxide">Aluminium(I) oxide</a> (<a href="/wiki/Aluminium" title="Aluminium">Al</a><sub>2</sub>O)</li> <li><a href="/wiki/Copper(I)_oxide" title="Copper(I) oxide">Copper(I) oxide</a> (<a href="/wiki/Copper" title="Copper">Cu</a><sub>2</sub>O)</li> <li><a href="/wiki/Caesium_monoxide" title="Caesium monoxide">Caesium monoxide</a> (<a href="/wiki/Caesium" title="Caesium">Cs</a><sub>2</sub>O)</li> <li><a href="/wiki/Dibromine_monoxide" title="Dibromine monoxide">Dibromine monoxide</a> (<a href="/wiki/Bromine" title="Bromine">Br</a><sub>2</sub>O)</li> <li><a href="/wiki/Dicarbon_monoxide" title="Dicarbon monoxide">Dicarbon monoxide</a> (<a href="/wiki/Carbon" title="Carbon">C</a><sub>2</sub>O)</li> <li><a href="/wiki/Dichlorine_monoxide" title="Dichlorine monoxide">Dichlorine monoxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O)</li> <li><a href="/wiki/Gallium(I)_oxide" title="Gallium(I) oxide">Gallium(I) oxide</a> (<a href="/wiki/Gallium" title="Gallium">Ga</a><sub>2</sub>O)</li> <li><a href="/wiki/Iodine(I)_oxide" class="mw-redirect" title="Iodine(I) oxide">Iodine(I) oxide</a> (<a href="/wiki/Iodine" title="Iodine">I</a><sub>2</sub>O)</li> <li><a href="/wiki/Lithium_oxide" title="Lithium oxide">Lithium oxide</a> (<a href="/wiki/Lithium" title="Lithium">Li</a><sub>2</sub>O)</li> <li><a href="/wiki/Mercury(I)_oxide" title="Mercury(I) oxide">Mercury(I) oxide</a> (<a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a><sub>2</sub>O)</li> <li><a href="/wiki/Nitrous_oxide" title="Nitrous oxide">Nitrous oxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O)</li> <li><a href="/wiki/Potassium_oxide" title="Potassium oxide">Potassium oxide</a> (<a href="/wiki/Potassium" title="Potassium">K</a><sub>2</sub>O)</li> <li><a href="/wiki/Rubidium_oxide" title="Rubidium oxide">Rubidium oxide</a> (<a href="/wiki/Rubidium" title="Rubidium">Rb</a><sub>2</sub>O)</li> <li><a href="/wiki/Silver_oxide" title="Silver oxide">Silver oxide</a> (<a href="/wiki/Silver" title="Silver">Ag</a><sub>2</sub>O)</li> <li><a href="/wiki/Thallium(I)_oxide" title="Thallium(I) oxide">Thallium(I) oxide</a> (<a href="/wiki/Thallium" title="Thallium">Tl</a><sub>2</sub>O)</li> <li><a href="/wiki/Sodium_oxide" title="Sodium oxide">Sodium oxide</a> (<a href="/wiki/Sodium" title="Sodium">Na</a><sub>2</sub>O)</li> <li><a href="/wiki/Properties_of_water" title="Properties of water">Water (hydrogen oxide)</a> (<a href="/wiki/Hydrogen" title="Hydrogen">H</a><sub>2</sub>O)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+2 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aluminium(II)_oxide" title="Aluminium(II) oxide">Aluminium(II) oxide</a> (<a href="/wiki/Aluminium" title="Aluminium">Al</a>O)</li> <li><a href="/wiki/Barium_oxide" title="Barium oxide">Barium oxide</a> (<a href="/wiki/Barium" title="Barium">Ba</a>O)</li> <li><a href="/wiki/Berkelium_monoxide" class="mw-redirect" title="Berkelium monoxide">Berkelium monoxide</a> (<a href="/wiki/Berkelium" title="Berkelium">Bk</a>O)</li> <li><a href="/wiki/Beryllium_oxide" title="Beryllium oxide">Beryllium oxide</a> (<a href="/wiki/Beryllium" title="Beryllium">Be</a>O)</li> <li><a href="/wiki/Boron_monoxide" title="Boron monoxide">Boron monoxide</a> (<a href="/wiki/Boron" title="Boron">B</a>O)</li> <li><a href="/wiki/Bromine_monoxide" class="mw-redirect" title="Bromine monoxide">Bromine monoxide</a> (<a href="/wiki/Bromine" title="Bromine">Br</a>O)</li> <li><a href="/wiki/Cadmium_oxide" title="Cadmium oxide">Cadmium oxide</a> (<a href="/wiki/Cadmium" title="Cadmium">Cd</a>O)</li> <li><a href="/wiki/Calcium_oxide" title="Calcium oxide">Calcium oxide</a> (<a href="/wiki/Calcium" title="Calcium">Ca</a>O)</li> <li><a href="/wiki/Carbon_monoxide" title="Carbon monoxide">Carbon monoxide</a> (<a href="/wiki/Carbon" title="Carbon">C</a>O)</li> <li><a href="/wiki/Chlorine_monoxide" title="Chlorine monoxide">Chlorine monoxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a>O)</li> <li><a href="/wiki/Chromium(II)_oxide" title="Chromium(II) oxide">Chromium(II) oxide</a> (<a href="/wiki/Chromium" title="Chromium">Cr</a>O)</li> <li><a href="/wiki/Cobalt(II)_oxide" title="Cobalt(II) oxide">Cobalt(II) oxide</a> (<a href="/wiki/Cobalt" title="Cobalt">Co</a>O)</li> <li><a href="/wiki/Copper(II)_oxide" title="Copper(II) oxide">Copper(II) oxide</a> (<a href="/wiki/Copper" title="Copper">Cu</a>O)</li> <li><a href="/wiki/Dinitrogen_dioxide" title="Dinitrogen dioxide">Dinitrogen dioxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O<sub>2</sub>)</li> <li><a href="/wiki/Europium(II)_oxide" title="Europium(II) oxide">Europium(II) oxide</a> (<a href="/wiki/Europium" title="Europium">Eu</a>O)</li> <li><a href="/wiki/Germanium_monoxide" title="Germanium monoxide">Germanium monoxide</a> (<a href="/wiki/Germanium" title="Germanium">Ge</a>O)</li> <li><a href="/wiki/Iron(II)_oxide" title="Iron(II) oxide">Iron(II) oxide</a> (<a href="/wiki/Iron" title="Iron">Fe</a>O)</li> <li><a href="/wiki/Iodine_monoxide" title="Iodine monoxide">Iodine monoxide</a> (<a href="/wiki/Iodine" title="Iodine">I</a>O)</li> <li><a href="/wiki/Lead(II)_oxide" title="Lead(II) oxide">Lead(II) oxide</a> (<a href="/wiki/Lead" title="Lead">Pb</a>O)</li> <li><a href="/wiki/Magnesium_oxide" title="Magnesium oxide">Magnesium oxide</a> (<a href="/wiki/Magnesium" title="Magnesium">Mg</a>O)</li> <li><a href="/wiki/Manganese(II)_oxide" title="Manganese(II) oxide">Manganese(II) oxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a>O)</li> <li><a href="/wiki/Mercury(II)_oxide" title="Mercury(II) oxide">Mercury(II) oxide</a> (<a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a>O)</li> <li><a href="/wiki/Nickel(II)_oxide" title="Nickel(II) oxide">Nickel(II) oxide</a> (<a href="/wiki/Nickel" title="Nickel">Ni</a>O)</li> <li><a href="/wiki/Nitric_oxide" title="Nitric oxide">Nitric oxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a>O)</li> <li><a href="/wiki/Niobium_monoxide" title="Niobium monoxide">Niobium monoxide</a> (<a href="/wiki/Niobium" title="Niobium">Nb</a>O)</li> <li><a href="/wiki/Palladium(II)_oxide" title="Palladium(II) oxide">Palladium(II) oxide</a> (<a href="/wiki/Palladium" title="Palladium">Pd</a>O)</li> <li><a class="mw-selflink selflink">Phosphorus monoxide</a> (<a href="/wiki/Phosphorus" title="Phosphorus">P</a>O)</li> <li><a href="/wiki/Polonium_monoxide" title="Polonium monoxide">Polonium monoxide</a> (<a href="/wiki/Polonium" title="Polonium">Po</a>O)</li> <li><a href="/wiki/Protactinium_monoxide" title="Protactinium monoxide">Protactinium monoxide</a> (<a href="/wiki/Protactinium" title="Protactinium">Pa</a>O)</li> <li><a href="/wiki/Radium_oxide" title="Radium oxide">Radium oxide</a> (<a href="/wiki/Radium" title="Radium">Ra</a>O)</li> <li><a href="/wiki/Silicon_monoxide" title="Silicon monoxide">Silicon monoxide</a> (<a href="/wiki/Silicon" title="Silicon">Si</a>O)</li> <li><a href="/wiki/Strontium_oxide" title="Strontium oxide">Strontium oxide</a> (<a href="/wiki/Strontium" title="Strontium">Sr</a>O)</li> <li><a href="/wiki/Sulfur_monoxide" title="Sulfur monoxide">Sulfur monoxide</a> (<a href="/wiki/Sulfur" title="Sulfur">S</a>O)</li> <li><a href="/wiki/Disulfur_dioxide" title="Disulfur dioxide">Disulfur dioxide</a> (<a href="/wiki/Sulfur" title="Sulfur">S</a><sub>2</sub>O<sub>2</sub>)</li> <li><a href="/wiki/Thorium_monoxide" title="Thorium monoxide">Thorium monoxide</a> (<a href="/wiki/Thorium" title="Thorium">Th</a>O)</li> <li><a href="/wiki/Tin(II)_oxide" title="Tin(II) oxide">Tin(II) oxide</a> (<a href="/wiki/Tin" title="Tin">Sn</a>O)</li> <li><a href="/wiki/Titanium(II)_oxide" title="Titanium(II) oxide">Titanium(II) oxide</a> (<a href="/wiki/Titanium" title="Titanium">Ti</a>O)</li> <li><a href="/wiki/Vanadium(II)_oxide" title="Vanadium(II) oxide">Vanadium(II) oxide</a> (<a href="/wiki/Vanadium" title="Vanadium">V</a>O)</li> <li><a href="/wiki/Yttrium(II)_oxide" title="Yttrium(II) oxide">Yttrium(II) oxide</a> (<a href="/wiki/Yttrium" title="Yttrium">Y</a>O)</li> <li><a href="/wiki/Zirconium_monoxide" class="mw-redirect" title="Zirconium monoxide">Zirconium monoxide</a> (<a href="/wiki/Zirconium" title="Zirconium">Zr</a>O)</li> <li><a href="/wiki/Zinc_oxide" title="Zinc oxide">Zinc oxide</a> (<a href="/wiki/Zinc" title="Zinc">Zn</a>O)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+3 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Actinium(III)_oxide" title="Actinium(III) oxide">Actinium(III) oxide</a> (<a href="/wiki/Actinium" title="Actinium">Ac</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Aluminium_oxide" title="Aluminium oxide">Aluminium oxide</a> (<a href="/wiki/Aluminium" title="Aluminium">Al</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Americium(III)_oxide" title="Americium(III) oxide">Americium(III) oxide</a> (<a href="/wiki/Americium" title="Americium">Am</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Antimony_trioxide" title="Antimony trioxide">Antimony trioxide</a> (<a href="/wiki/Antimony" title="Antimony">Sb</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Arsenic_trioxide" title="Arsenic trioxide">Arsenic trioxide</a> (<a href="/wiki/Arsenic" title="Arsenic">As</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Berkelium(III)_oxide" title="Berkelium(III) oxide">Berkelium(III) oxide</a> (<a href="/wiki/Berkelium" title="Berkelium">Bk</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Bismuth(III)_oxide" title="Bismuth(III) oxide">Bismuth(III) oxide</a> (<a href="/wiki/Bismuth" title="Bismuth">Bi</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Boron_trioxide" title="Boron trioxide">Boron trioxide</a> (<a href="/wiki/Boron" title="Boron">B</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Caesium_sesquioxide" title="Caesium sesquioxide">Caesium sesquioxide</a> (<a href="/wiki/Caesium" title="Caesium">Cs</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Californium(III)_oxide" title="Californium(III) oxide">Californium(III) oxide</a> (<a href="/wiki/Californium" title="Californium">Cf</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Cerium(III)_oxide" title="Cerium(III) oxide">Cerium(III) oxide</a> (<a href="/wiki/Cerium" title="Cerium">Ce</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Chromium(III)_oxide" title="Chromium(III) oxide">Chromium(III) oxide</a> (<a href="/wiki/Chromium" title="Chromium">Cr</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Cobalt(III)_oxide" title="Cobalt(III) oxide">Cobalt(III) oxide</a> (<a href="/wiki/Cobalt" title="Cobalt">Co</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Dinitrogen_trioxide" title="Dinitrogen trioxide">Dinitrogen trioxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Dysprosium(III)_oxide" title="Dysprosium(III) oxide">Dysprosium(III) oxide</a> (<a href="/wiki/Dysprosium" title="Dysprosium">Dy</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Einsteinium(III)_oxide" title="Einsteinium(III) oxide">Einsteinium(III) oxide</a> (<a href="/wiki/Einsteinium" title="Einsteinium">Es</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Erbium(III)_oxide" title="Erbium(III) oxide">Erbium(III) oxide</a> (<a href="/wiki/Erbium" title="Erbium">Er</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Europium(III)_oxide" title="Europium(III) oxide">Europium(III) oxide</a> (<a href="/wiki/Europium" title="Europium">Eu</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Gadolinium(III)_oxide" title="Gadolinium(III) oxide">Gadolinium(III) oxide</a> (<a href="/wiki/Gadolinium" title="Gadolinium">Gd</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Gallium(III)_oxide" title="Gallium(III) oxide">Gallium(III) oxide</a> (<a href="/wiki/Gallium" title="Gallium">Ga</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Gold(III)_oxide" title="Gold(III) oxide">Gold(III) oxide</a> (<a href="/wiki/Gold" title="Gold">Au</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Holmium(III)_oxide" title="Holmium(III) oxide">Holmium(III) oxide</a> (<a href="/wiki/Holmium" title="Holmium">Ho</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Indium(III)_oxide" title="Indium(III) oxide">Indium(III) oxide</a> (<a href="/wiki/Indium" title="Indium">In</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Iron(III)_oxide" title="Iron(III) oxide">Iron(III) oxide</a> (<a href="/wiki/Iron" title="Iron">Fe</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Lanthanum_oxide" title="Lanthanum oxide">Lanthanum oxide</a> (<a href="/wiki/Lanthanum" title="Lanthanum">La</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Lutetium(III)_oxide" title="Lutetium(III) oxide">Lutetium(III) oxide</a> (<a href="/wiki/Lutetium" title="Lutetium">Lu</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Manganese(III)_oxide" title="Manganese(III) oxide">Manganese(III) oxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Neodymium(III)_oxide" title="Neodymium(III) oxide">Neodymium(III) oxide</a> (<a href="/wiki/Neodymium" title="Neodymium">Nd</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Nickel(III)_oxide" title="Nickel(III) oxide">Nickel(III) oxide</a> (<a href="/wiki/Nickel" title="Nickel">Ni</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Phosphorus_trioxide" title="Phosphorus trioxide">Phosphorus trioxide</a> (<a href="/wiki/Phosphorus" title="Phosphorus">P</a><sub>4</sub>O<sub>6</sub>)</li> <li><a href="/wiki/Praseodymium(III)_oxide" title="Praseodymium(III) oxide">Praseodymium(III) oxide</a> (<a href="/wiki/Praseodymium" title="Praseodymium">Pr</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Promethium(III)_oxide" title="Promethium(III) oxide">Promethium(III) oxide</a> (<a href="/wiki/Promethium" title="Promethium">Pm</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Rhodium(III)_oxide" title="Rhodium(III) oxide">Rhodium(III) oxide</a> (<a href="/wiki/Rhodium" title="Rhodium">Rh</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Samarium(III)_oxide" title="Samarium(III) oxide">Samarium(III) oxide</a> (<a href="/wiki/Samarium" title="Samarium">Sm</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Scandium_oxide" title="Scandium oxide">Scandium oxide</a> (<a href="/wiki/Scandium" title="Scandium">Sc</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Terbium(III)_oxide" title="Terbium(III) oxide">Terbium(III) oxide</a> (<a href="/wiki/Terbium" title="Terbium">Tb</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Thallium(III)_oxide" title="Thallium(III) oxide">Thallium(III) oxide</a> (<a href="/wiki/Thallium" title="Thallium">Tl</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Thulium(III)_oxide" title="Thulium(III) oxide">Thulium(III) oxide</a> (<a href="/wiki/Thulium" title="Thulium">Tm</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Titanium(III)_oxide" title="Titanium(III) oxide">Titanium(III) oxide</a> (<a href="/wiki/Titanium" title="Titanium">Ti</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Tungsten(III)_oxide" title="Tungsten(III) oxide">Tungsten(III) oxide</a> (<a href="/wiki/Tungsten" title="Tungsten">W</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Vanadium(III)_oxide" title="Vanadium(III) oxide">Vanadium(III) oxide</a> (<a href="/wiki/Vanadium" title="Vanadium">V</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Ytterbium(III)_oxide" title="Ytterbium(III) oxide">Ytterbium(III) oxide</a> (<a href="/wiki/Ytterbium" title="Ytterbium">Yb</a><sub>2</sub>O<sub>3</sub>)</li> <li><a href="/wiki/Yttrium(III)_oxide" title="Yttrium(III) oxide">Yttrium(III) oxide</a> (<a href="/wiki/Yttrium" title="Yttrium">Y</a><sub>2</sub>O<sub>3</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+4 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Americium_dioxide" title="Americium dioxide">Americium dioxide</a> (<a href="/wiki/Americium" title="Americium">Am</a>O<sub>2</sub>)</li> <li><a href="/wiki/Berkelium(IV)_oxide" title="Berkelium(IV) oxide">Berkelium(IV) oxide</a> (<a href="/wiki/Berkelium" title="Berkelium">Bk</a>O<sub>2</sub>)</li> <li><a href="/wiki/Bromine_dioxide" title="Bromine dioxide">Bromine dioxide</a> (<a href="/wiki/Bromine" title="Bromine">Br</a>O<sub>2</sub>)</li> <li><a href="/wiki/Californium_dioxide" class="mw-redirect" title="Californium dioxide">Californium dioxide</a> (<a href="/wiki/Californium" title="Californium">Cf</a>O<sub>2</sub>)</li> <li><a href="/wiki/Carbon_dioxide" title="Carbon dioxide">Carbon dioxide</a> (<a href="/wiki/Carbon" title="Carbon">C</a>O<sub>2</sub>)</li> <li><a href="/wiki/Carbon_trioxide" title="Carbon trioxide">Carbon trioxide</a> (<a href="/wiki/Carbon" title="Carbon">C</a>O<sub>3</sub>)</li> <li><a href="/wiki/Cerium(IV)_oxide" title="Cerium(IV) oxide">Cerium(IV) oxide</a> (<a href="/wiki/Cerium" title="Cerium">Ce</a>O<sub>2</sub>)</li> <li><a href="/wiki/Chlorine_dioxide" title="Chlorine dioxide">Chlorine dioxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a>O<sub>2</sub>)</li> <li><a href="/wiki/Chromium(IV)_oxide" title="Chromium(IV) oxide">Chromium(IV) oxide</a> (<a href="/wiki/Chromium" title="Chromium">Cr</a>O<sub>2</sub>)</li> <li><a href="/wiki/Curium(IV)_oxide" title="Curium(IV) oxide">Curium(IV) oxide</a> (<a href="/wiki/Curium" title="Curium">Cm</a>O<sub>2</sub>)</li> <li><a href="/wiki/Dinitrogen_tetroxide" title="Dinitrogen tetroxide">Dinitrogen tetroxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O<sub>4</sub>)</li> <li><a href="/wiki/Germanium_dioxide" title="Germanium dioxide">Germanium dioxide</a> (<a href="/wiki/Germanium" title="Germanium">Ge</a>O<sub>2</sub>)</li> <li><a href="/wiki/Iodine_dioxide" title="Iodine dioxide">Iodine dioxide</a> (<a href="/wiki/Iodine" title="Iodine">I</a>O<sub>2</sub>)</li> <li><a href="/wiki/Iridium_dioxide" class="mw-redirect" title="Iridium dioxide">Iridium dioxide</a> (<a href="/wiki/Iridium" title="Iridium">Ir</a>O<sub>2</sub>)</li> <li><a href="/wiki/Hafnium(IV)_oxide" title="Hafnium(IV) oxide">Hafnium(IV) oxide</a> (<a href="/wiki/Hafnium" title="Hafnium">Hf</a>O<sub>2</sub>)</li> <li><a href="/wiki/Lead_dioxide" title="Lead dioxide">Lead dioxide</a> (<a href="/wiki/Lead" title="Lead">Pb</a>O<sub>2</sub>)</li> <li><a href="/wiki/Manganese_dioxide" title="Manganese dioxide">Manganese dioxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a>O<sub>2</sub>)</li> <li><a href="/wiki/Molybdenum_dioxide" title="Molybdenum dioxide">Molybdenum dioxide</a> (<a href="/wiki/Molybdenum" title="Molybdenum">Mo</a>O<sub>2</sub>)</li> <li><a href="/wiki/Neptunium(IV)_oxide" title="Neptunium(IV) oxide">Neptunium(IV) oxide</a> (<a href="/wiki/Neptunium" title="Neptunium">Np</a>O<sub>2</sub>)</li> <li><a href="/wiki/Nitrogen_dioxide" title="Nitrogen dioxide">Nitrogen dioxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a>O<sub>2</sub>)</li> <li><a href="/wiki/Niobium_dioxide" title="Niobium dioxide">Niobium dioxide</a> (<a href="/wiki/Niobium" title="Niobium">Nb</a>O<sub>2</sub>)</li> <li><a href="/wiki/Osmium_dioxide" title="Osmium dioxide">Osmium dioxide</a> (<a href="/wiki/Osmium" title="Osmium">Os</a>O<sub>2</sub>)</li> <li><a href="/wiki/Platinum_dioxide" class="mw-redirect" title="Platinum dioxide">Platinum dioxide</a> (<a href="/wiki/Platinum" title="Platinum">Pt</a>O<sub>2</sub>)</li> <li><a href="/wiki/Plutonium(IV)_oxide" title="Plutonium(IV) oxide">Plutonium(IV) oxide</a> (<a href="/wiki/Plutonium" title="Plutonium">Pu</a>O<sub>2</sub>)</li> <li><a href="/wiki/Polonium_dioxide" title="Polonium dioxide">Polonium dioxide</a> (<a href="/wiki/Polonium" title="Polonium">Po</a>O<sub>2</sub>)</li> <li><a href="/wiki/Praseodymium(IV)_oxide" title="Praseodymium(IV) oxide">Praseodymium(IV) oxide</a> (<a href="/wiki/Praseodymium" title="Praseodymium">Pr</a>O<sub>2</sub>)</li> <li><a href="/wiki/Protactinium(IV)_oxide" title="Protactinium(IV) oxide">Protactinium(IV) oxide</a> (<a href="/wiki/Protactinium" title="Protactinium">Pa</a>O<sub>2</sub>)</li> <li><a href="/wiki/Rhenium(IV)_oxide" title="Rhenium(IV) oxide">Rhenium(IV) oxide</a> (<a href="/wiki/Rhenium" title="Rhenium">Re</a>O<sub>2</sub>)</li> <li><a href="/wiki/Rhodium(IV)_oxide" title="Rhodium(IV) oxide">Rhodium(IV) oxide</a> (<a href="/wiki/Rhodium" title="Rhodium">Rh</a>O<sub>2</sub>)</li> <li><a href="/wiki/Ruthenium(IV)_oxide" title="Ruthenium(IV) oxide">Ruthenium(IV) oxide</a> (<a href="/wiki/Ruthenium" title="Ruthenium">Ru</a>O<sub>2</sub>)</li> <li><a href="/wiki/Selenium_dioxide" title="Selenium dioxide">Selenium dioxide</a> (<a href="/wiki/Selenium" title="Selenium">Se</a>O<sub>2</sub>)</li> <li><a href="/wiki/Silicon_dioxide" title="Silicon dioxide">Silicon dioxide</a> (<a href="/wiki/Silicon" title="Silicon">Si</a>O<sub>2</sub>)</li> <li><a href="/wiki/Sulfur_dioxide" title="Sulfur dioxide">Sulfur dioxide</a> (<a href="/wiki/Sulfur" title="Sulfur">S</a>O<sub>2</sub>)</li> <li><a href="/wiki/Technetium(IV)_oxide" title="Technetium(IV) oxide">Technetium(IV) oxide</a> (<a href="/wiki/Technetium" title="Technetium">Tc</a>O<sub>2</sub>)</li> <li><a href="/wiki/Tellurium_dioxide" title="Tellurium dioxide">Tellurium dioxide</a> (<a href="/wiki/Tellurium" title="Tellurium">Te</a>O<sub>2</sub>)</li> <li><a href="/wiki/Terbium(IV)_oxide" title="Terbium(IV) oxide">Terbium(IV) oxide</a> (<a href="/wiki/Terbium" title="Terbium">Tb</a>O<sub>2</sub>)</li> <li><a href="/wiki/Thorium_dioxide" title="Thorium dioxide">Thorium dioxide</a> (<a href="/wiki/Thorium" title="Thorium">Th</a>O<sub>2</sub>)</li> <li><a href="/wiki/Tin(IV)_oxide" title="Tin(IV) oxide">Tin dioxide</a> (<a href="/wiki/Tin" title="Tin">Sn</a>O<sub>2</sub>)</li> <li><a href="/wiki/Titanium_dioxide" title="Titanium dioxide">Titanium dioxide</a> (<a href="/wiki/Titanium" title="Titanium">Ti</a>O<sub>2</sub>)</li> <li><a href="/wiki/Tungsten(IV)_oxide" title="Tungsten(IV) oxide">Tungsten(IV) oxide</a> (<a href="/wiki/Tungsten" title="Tungsten">W</a>O<sub>2</sub>)</li> <li><a href="/wiki/Uranium_dioxide" title="Uranium dioxide">Uranium dioxide</a> (<a href="/wiki/Uranium" title="Uranium">U</a>O<sub>2</sub>)</li> <li><a href="/wiki/Vanadium(IV)_oxide" title="Vanadium(IV) oxide">Vanadium(IV) oxide</a> (<a href="/wiki/Vanadium" title="Vanadium">V</a>O<sub>2</sub>)</li> <li><a href="/wiki/Zirconium_dioxide" title="Zirconium dioxide">Zirconium dioxide</a> (<a href="/wiki/Zirconium" title="Zirconium">Zr</a>O<sub>2</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+5 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Antimony_pentoxide" title="Antimony pentoxide">Antimony pentoxide</a> (<a href="/wiki/Antimony" title="Antimony">Sb</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Arsenic_pentoxide" title="Arsenic pentoxide">Arsenic pentoxide</a> (<a href="/wiki/Arsenic" title="Arsenic">As</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Bismuth_pentoxide" title="Bismuth pentoxide">Bismuth pentoxide</a> (<a href="/wiki/Bismuth" title="Bismuth">Bi</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Dinitrogen_pentoxide" title="Dinitrogen pentoxide">Dinitrogen pentoxide</a> (<a href="/wiki/Nitrogen" title="Nitrogen">N</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Niobium_pentoxide" title="Niobium pentoxide">Niobium pentoxide</a> (<a href="/wiki/Niobium" title="Niobium">Nb</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Phosphorus_pentoxide" title="Phosphorus pentoxide">Phosphorus pentoxide</a> (<a href="/wiki/Phosphorus" title="Phosphorus">P</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Protactinium(V)_oxide" title="Protactinium(V) oxide">Protactinium(V) oxide</a> (<a href="/wiki/Protactinium" title="Protactinium">Pa</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Tantalum_pentoxide" title="Tantalum pentoxide">Tantalum pentoxide</a> (<a href="/wiki/Tantalum" title="Tantalum">Ta</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Tungsten_pentoxide" title="Tungsten pentoxide">Tungsten pentoxide</a> (<a href="/wiki/Tungsten" title="Tungsten">W</a><sub>2</sub>O<sub>5</sub>)</li> <li><a href="/wiki/Vanadium(V)_oxide" title="Vanadium(V) oxide">Vanadium(V) oxide</a> (<a href="/wiki/Vanadium" title="Vanadium">V</a><sub>2</sub>O<sub>5</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+6 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromium_trioxide" title="Chromium trioxide">Chromium trioxide</a> (<a href="/wiki/Chromium" title="Chromium">Cr</a>O<sub>3</sub>)</li> <li><a href="/wiki/Molybdenum_trioxide" title="Molybdenum trioxide">Molybdenum trioxide</a> (<a href="/wiki/Molybdenum" title="Molybdenum">Mo</a>O<sub>3</sub>)</li> <li><a href="/wiki/Polonium_trioxide" title="Polonium trioxide">Polonium trioxide</a> (<a href="/wiki/Polonium" title="Polonium">Po</a>O<sub>3</sub>)</li> <li><a href="/wiki/Rhenium_trioxide" title="Rhenium trioxide">Rhenium trioxide</a> (<a href="/wiki/Rhenium" title="Rhenium">Re</a>O<sub>3</sub>)</li> <li><a href="/wiki/Selenium_trioxide" title="Selenium trioxide">Selenium trioxide</a> (<a href="/wiki/Selenium" title="Selenium">Se</a>O<sub>3</sub>)</li> <li><a href="/wiki/Sulfur_trioxide" title="Sulfur trioxide">Sulfur trioxide</a> (<a href="/wiki/Sulfur" title="Sulfur">S</a>O<sub>3</sub>)</li> <li><a href="/wiki/Tellurium_trioxide" title="Tellurium trioxide">Tellurium trioxide</a> (<a href="/wiki/Tellurium" title="Tellurium">Te</a>O<sub>3</sub>)</li> <li><a href="/wiki/Tungsten_trioxide" title="Tungsten trioxide">Tungsten trioxide</a> (<a href="/wiki/Tungsten" title="Tungsten">W</a>O<sub>3</sub>)</li> <li><a href="/wiki/Uranium_trioxide" title="Uranium trioxide">Uranium trioxide</a> (<a href="/wiki/Uranium" title="Uranium">U</a>O<sub>3</sub>)</li> <li><a href="/wiki/Xenon_trioxide" title="Xenon trioxide">Xenon trioxide</a> (<a href="/wiki/Xenon" title="Xenon">Xe</a>O<sub>3</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+7 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dichlorine_heptoxide" title="Dichlorine heptoxide">Dichlorine heptoxide</a> (<a href="/wiki/Chlorine" title="Chlorine">Cl</a><sub>2</sub>O<sub>7</sub>)</li> <li><a href="/wiki/Manganese_heptoxide" title="Manganese heptoxide">Manganese heptoxide</a> (<a href="/wiki/Manganese" title="Manganese">Mn</a><sub>2</sub>O<sub>7</sub>)</li> <li><a href="/wiki/Rhenium(VII)_oxide" title="Rhenium(VII) oxide">Rhenium(VII) oxide</a> (<a href="/wiki/Rhenium" title="Rhenium">Re</a><sub>2</sub>O<sub>7</sub>)</li> <li><a href="/wiki/Technetium(VII)_oxide" title="Technetium(VII) oxide">Technetium(VII) oxide</a> (<a href="/wiki/Technetium" title="Technetium">Tc</a><sub>2</sub>O<sub>7</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">+8 oxidation state</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Iridium_tetroxide" title="Iridium tetroxide">Iridium tetroxide</a> (<a href="/wiki/Iridium" title="Iridium">Ir</a>O<sub>4</sub>)</li> <li><a href="/wiki/Osmium_tetroxide" title="Osmium tetroxide">Osmium tetroxide</a> (<a href="/wiki/Osmium" title="Osmium">Os</a>O<sub>4</sub>)</li> <li><a href="/wiki/Ruthenium_tetroxide" title="Ruthenium tetroxide">Ruthenium tetroxide</a> (<a href="/wiki/Ruthenium" title="Ruthenium">Ru</a>O<sub>4</sub>)</li> <li><a href="/wiki/Xenon_tetroxide" title="Xenon tetroxide">Xenon tetroxide</a> (<a href="/wiki/Xenon" title="Xenon">Xe</a>O<sub>4</sub>)</li> <li><a href="/wiki/Hassium_tetroxide" title="Hassium tetroxide">Hassium tetroxide</a> (<a href="/wiki/Hassium" title="Hassium">Hs</a>O<sub>4</sub>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Oxocarbon" title="Oxocarbon">Oxocarbon</a></li> <li><a href="/wiki/Suboxide" title="Suboxide">Suboxide</a></li> <li><a href="/wiki/Oxyanion" title="Oxyanion">Oxyanion</a></li> <li><a href="/wiki/Ozonide" title="Ozonide">Ozonide</a></li> <li><a href="/wiki/Peroxide" title="Peroxide">Peroxide</a></li> <li><a href="/wiki/Superoxide" title="Superoxide">Superoxide</a></li> <li><a href="/wiki/Oxypnictide" title="Oxypnictide">Oxypnictide</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>Oxides are sorted by <a href="/wiki/Oxidation_state" title="Oxidation state">oxidation state</a>. <a href="/wiki/Category:Oxides" title="Category:Oxides">Category:Oxides</a></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"><style data-mw-deduplicate="TemplateStyles:r1123817410">.mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:left}.mw-parser-output sub.template-chem2-sub{font-size:80%;vertical-align:-0.35em}.mw-parser-output sup.template-chem2-sup{font-size:80%;vertical-align:0.65em}</style><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1123817410"></div><div role="navigation" class="navbox" aria-labelledby="Phosphorus_compounds" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Phosphorus_compounds" title="Template:Phosphorus compounds"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Phosphorus_compounds" title="Template talk:Phosphorus compounds"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Phosphorus_compounds" title="Special:EditPage/Template:Phosphorus compounds"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Phosphorus_compounds" style="font-size:114%;margin:0 4em"><a href="/wiki/Phosphorus_compounds" class="mw-redirect" title="Phosphorus compounds">Phosphorus compounds</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Phosphide" title="Phosphide">Phosphides</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aluminum_phosphide" class="mw-redirect" title="Aluminum phosphide">AlP</a></li> <li><a href="/wiki/Arsenic_monophosphide" title="Arsenic monophosphide">AsP</a></li> <li><a href="/wiki/Boron_phosphide" title="Boron phosphide">BP</a></li> <li><a href="/wiki/Bismuth_phosphide" title="Bismuth phosphide">BiP</a></li> <li><a href="/wiki/Caesium_phosphide" title="Caesium phosphide"><span class="chemf nowrap">Cs<sub class="template-chem2-sub">2</sub>P<sub class="template-chem2-sub">5</sub></span></a></li> <li><a href="/wiki/Calcium_phosphide" title="Calcium phosphide">Ca<sub>3</sub>P<sub>2</sub></a></li> <li><a href="/wiki/Cadmium_phosphide" title="Cadmium phosphide">Cd<sub>3</sub>P<sub>2</sub></a></li> <li><a href="/wiki/Copper_phosphide" class="mw-redirect" title="Copper phosphide">Cu<sub>3</sub>P</a></li> <li><a href="/wiki/Dysprosium_phosphide" title="Dysprosium phosphide">DyP</a></li> <li><a href="/wiki/Erbium_phosphide" title="Erbium phosphide">ErP</a></li> <li><a href="/wiki/Europium(III)_phosphide" title="Europium(III) phosphide">EuP</a></li> <li><a href="/wiki/Gadolinium_phosphide" title="Gadolinium phosphide">GdP</a></li> <li><a href="/wiki/Gold_phosphide" title="Gold phosphide">AuP</a></li> <li><a href="/wiki/Iron(III)_phosphide" class="mw-redirect" title="Iron(III) phosphide">FeP</a></li> <li><a href="/w/index.php?title=Iron(I)_phosphide&action=edit&redlink=1" class="new" title="Iron(I) phosphide (page does not exist)">Fe<sub>3</sub>P</a></li> <li><a href="/wiki/Hafnium_phosphide" title="Hafnium phosphide">HfP</a></li> <li><a href="/wiki/Holmium_phosphide" title="Holmium phosphide">HoP</a></li> <li><a href="/wiki/Indium_phosphide" title="Indium phosphide">InP</a></li> <li><a href="/wiki/Lanthanum_phosphide" title="Lanthanum phosphide">LaP</a></li> <li><a href="/wiki/Lithium_phosphide" title="Lithium phosphide">Li<sub>3</sub>P</a></li> <li><a href="/wiki/Lutetium_phosphide" title="Lutetium phosphide">LuP</a></li> <li><a href="/wiki/Molybdenum_monophosphide" title="Molybdenum monophosphide">MoP</a></li> <li><a href="/wiki/Molybdenum_diphosphide" title="Molybdenum diphosphide"><span class="chemf nowrap">MoP<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Trimolybdenum_phosphide" title="Trimolybdenum phosphide"><span class="chemf nowrap">Mo<sub class="template-chem2-sub">3</sub>P</span></a></li> <li><a href="/wiki/Niobium_phosphide" title="Niobium phosphide">NbP</a></li> <li><a href="/wiki/Neodymium_phosphide" title="Neodymium phosphide">NdP</a></li> <li><a href="/wiki/Neptunium_phosphide" class="mw-redirect" title="Neptunium phosphide">NpP</a></li> <li><a href="/wiki/Neptunium(IV)_phosphide" title="Neptunium(IV) phosphide"><span class="chemf nowrap">Np<sub class="template-chem2-sub">3</sub>P<sub class="template-chem2-sub">4</sub></span></a></li> <li><a href="/wiki/Osmium_diphosphide" title="Osmium diphosphide"><span class="chemf nowrap">OsP<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Diruthenium_phosphide" title="Diruthenium phosphide"><span class="chemf nowrap">Ru<sub class="template-chem2-sub">2</sub>P</span></a></li> <li><a href="/wiki/Platinum_diphosphide" title="Platinum diphosphide"><span class="chemf nowrap">PtP<sub class="template-chem2-sub">2</sub></span></a></li> <li><a href="/wiki/Praseodymium_phosphide" class="mw-redirect" title="Praseodymium phosphide">PrP</a></li> <li><a href="/wiki/Praseodymium_pentaphosphide" title="Praseodymium pentaphosphide"><span class="chemf nowrap">PrP<sub class="template-chem2-sub">5</sub></span></a></li> <li><a href="/wiki/Plutonium_phosphide" class="mw-redirect" title="Plutonium phosphide">PuP</a></li> <li><a href="/wiki/Scandium_phosphide" title="Scandium phosphide">ScP</a></li> <li><a href="/wiki/Samarium_phosphide" class="mw-redirect" title="Samarium phosphide">SmP</a></li> <li><a href="/wiki/Samarium_pentaphosphide" title="Samarium pentaphosphide"><span class="chemf nowrap">SmP<sub class="template-chem2-sub">5</sub></span></a></li> <li><a href="/wiki/Strontium_phosphide" title="Strontium phosphide">Sr<sub>3</sub>P<sub>2</sub></a></li> <li><a href="/wiki/Terbium_phosphide" title="Terbium phosphide">TbP</a></li> <li><a href="/wiki/Tin_triphosphide" title="Tin triphosphide"><span class="chemf nowrap">SnP<sub class="template-chem2-sub">3</sub></span></a></li> <li><a href="/wiki/Thorium_heptaphosphide" title="Thorium heptaphosphide"><span class="chemf nowrap">ThP<sub class="template-chem2-sub">7</sub></span></a></li> <li><a href="/wiki/Thulium_phosphide" title="Thulium phosphide">TmP</a></li> <li><a href="/wiki/Yttrium_phosphide" title="Yttrium phosphide">YP</a></li> <li><a href="/wiki/Ytterbium_phosphide" class="mw-redirect" title="Ytterbium phosphide">YbP</a></li> <li><a href="/wiki/Zinc_diphosphide" title="Zinc diphosphide">ZnP<sub>2</sub></a></li> <li><a href="/wiki/Zinc_phosphide" title="Zinc phosphide">Zn<sub>3</sub>P<sub>2</sub></a></li> <li><a href="/wiki/Zirconium_phosphide" class="mw-redirect" title="Zirconium phosphide">ZrP</a></li> <li><a href="/wiki/Zirconium_diphosphide" title="Zirconium diphosphide"><span class="chemf nowrap">ZrP<sub class="template-chem2-sub">2</sub></span></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other compounds</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Phosphorus_tribromide" title="Phosphorus tribromide">PBr<sub>3</sub></a></li> <li><a href="/wiki/Phosphorus_pentabromide" title="Phosphorus pentabromide">PBr<sub>5</sub></a></li> <li><a href="/wiki/Phosphorus_heptabromide" title="Phosphorus heptabromide">PBr<sub>7</sub></a></li> <li><a href="/wiki/Phosphorus_trichloride" title="Phosphorus trichloride">PCl<sub>3</sub></a></li> <li><a href="/wiki/Phosphorus_pentachloride" title="Phosphorus pentachloride">PCl<sub>5</sub></a></li> <li><a href="/wiki/Diphosphorus_tetrachloride" title="Diphosphorus tetrachloride">P<sub>2</sub>Cl<sub>4</sub></a></li> <li><a href="/wiki/Phosphorus_trifluoride" title="Phosphorus trifluoride">PF<sub>3</sub></a></li> <li><a href="/wiki/Phosphorus_pentafluoride" title="Phosphorus pentafluoride">PF<sub>5</sub></a></li> <li><a href="/wiki/Phosphorus_triiodide" title="Phosphorus triiodide">PI<sub>3</sub></a></li> <li><a href="/wiki/Phosphine" title="Phosphine">PH<sub>3</sub></a></li> <li><a href="/wiki/Phosphorus_mononitride" title="Phosphorus mononitride">PN</a></li> <li><a href="/wiki/Triphosphorus_pentanitride" title="Triphosphorus pentanitride">P<sub>3</sub>N<sub>5</sub></a></li> <li><a class="mw-selflink selflink">PO</a></li> <li><a href="/wiki/Phosphorus_trioxide" title="Phosphorus trioxide">P<sub>2</sub>O<sub>3</sub></a></li> <li><a href="/wiki/Phosphorus_tetroxide" title="Phosphorus tetroxide">P<sub>2</sub>O<sub>4</sub></a></li> <li><a href="/wiki/Phosphorus_pentoxide" title="Phosphorus pentoxide">P<sub>2</sub>O<sub>5</sub></a></li> <li><a href="/wiki/Phosphorus_sesquisulfide" title="Phosphorus sesquisulfide">P<sub>4</sub>S<sub>3</sub></a></li> <li><a href="/wiki/Phosphorus_sulfide" class="mw-redirect" title="Phosphorus sulfide">P<sub>4</sub>S<sub><i>x</i></sub></a></li> <li><a href="/wiki/Phosphorus_pentasulfide" title="Phosphorus pentasulfide">P<sub>4</sub>S<sub>10</sub></a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Molecules_detected_in_outer_space" style="padding:3px"><table class="nowraplinks hlist mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Molecules_detected_in_outer_space" title="Template:Molecules detected in outer space"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Molecules_detected_in_outer_space" title="Template talk:Molecules detected in outer space"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Molecules_detected_in_outer_space" title="Special:EditPage/Template:Molecules detected in outer space"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Molecules_detected_in_outer_space" style="font-size:114%;margin:0 4em"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules" title="List of interstellar and circumstellar molecules">Molecules detected in outer space</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Molecule" title="Molecule">Molecules</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diatomic_molecule" title="Diatomic molecule">Diatomic</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aluminium_monochloride" title="Aluminium monochloride">Aluminium monochloride</a></li> <li><a href="/wiki/Aluminium_monofluoride" title="Aluminium monofluoride">Aluminium monofluoride</a></li> <li><a href="/wiki/Aluminium(II)_oxide" title="Aluminium(II) oxide">Aluminium(II) oxide</a></li> <li><a href="/wiki/Argonium" title="Argonium">Argonium</a></li> <li><a href="/wiki/Carbon_cation" class="mw-redirect" title="Carbon cation">Carbon cation</a></li> <li><a href="/wiki/Carbon_monophosphide" title="Carbon monophosphide">Carbon monophosphide</a></li> <li><a href="/wiki/Carbon_monosulfide" title="Carbon monosulfide">Carbon monosulfide</a></li> <li><a href="/wiki/Carbon_monoxide" title="Carbon monoxide">Carbon monoxide</a></li> <li><a href="/wiki/Cyano_radical" title="Cyano radical">Cyano radical</a></li> <li><a href="/wiki/Diatomic_carbon" title="Diatomic carbon">Diatomic carbon</a></li> <li><a href="/w/index.php?title=Fluoromethylidynium&action=edit&redlink=1" class="new" title="Fluoromethylidynium (page does not exist)">Fluoromethylidynium</a></li> <li><a href="/wiki/Helium_hydride_ion" title="Helium hydride ion">Helium hydride ion</a></li> <li><a href="/wiki/Hydrogen_chloride" title="Hydrogen chloride">Hydrogen chloride</a></li> <li><a href="/wiki/Hydrogen_fluoride" title="Hydrogen fluoride">Hydrogen fluoride</a></li> <li><a href="/wiki/Hydrogen" title="Hydrogen">Hydrogen</a> (molecular)</li> <li><a href="/wiki/Hydroxyl_radical" title="Hydroxyl radical">Hydroxyl radical</a></li> <li><a href="/wiki/Iron(II)_oxide" title="Iron(II) oxide">Iron(II) oxide</a></li> <li><a href="/wiki/Magnesium_monohydride" title="Magnesium monohydride">Magnesium monohydride</a></li> <li><a href="/wiki/Methylidyne_radical" title="Methylidyne radical">Methylidyne radical</a></li> <li><a href="/wiki/Nitric_oxide" title="Nitric oxide">Nitric oxide</a></li> <li><a href="/wiki/Nitrogen" title="Nitrogen">Nitrogen</a> (molecular)</li> <li><a href="/wiki/Imidogen" title="Imidogen">Imidogen</a></li> <li><a href="/wiki/Sulfur_mononitride" title="Sulfur mononitride">Sulfur mononitride</a></li> <li><a href="/wiki/Oxygen" title="Oxygen">Oxygen</a> (molecular)</li> <li><a class="mw-selflink selflink">Phosphorus monoxide</a></li> <li><a href="/wiki/Phosphorus_mononitride" title="Phosphorus mononitride">Phosphorus mononitride</a></li> <li><a href="/wiki/Potassium_chloride" title="Potassium chloride">Potassium chloride</a></li> <li><a href="/wiki/Silicon_carbide" title="Silicon carbide">Silicon carbide</a></li> <li><a href="/wiki/Silicon_monoxide" title="Silicon monoxide">Silicon monoxide</a></li> <li><a href="/wiki/Silicon_monosulfide" title="Silicon monosulfide">Silicon monosulfide</a></li> <li><a href="/wiki/Sodium_chloride" title="Sodium chloride">Sodium chloride</a></li> <li><a href="/wiki/Sodium_iodide" title="Sodium iodide">Sodium iodide</a></li> <li><a href="/wiki/Sulfanyl" title="Sulfanyl">Sulfanyl</a></li> <li><a href="/wiki/Sulfur_monoxide" title="Sulfur monoxide">Sulfur monoxide</a></li> <li><a href="/wiki/Titanium(II)_oxide" title="Titanium(II) oxide">Titanium(II) oxide</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="9" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/Nitrous_oxide" title="Nitrous oxide"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/Nitrous-oxide-3D-balls.png/60px-Nitrous-oxide-3D-balls.png" decoding="async" width="60" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/Nitrous-oxide-3D-balls.png/90px-Nitrous-oxide-3D-balls.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/93/Nitrous-oxide-3D-balls.png/120px-Nitrous-oxide-3D-balls.png 2x" data-file-width="1100" data-file-height="441" /></a></span> <br /><br /><br /><br /> <span typeof="mw:File"><a href="/wiki/Ethanol" title="Ethanol"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Ethanol-3D-balls.png/60px-Ethanol-3D-balls.png" decoding="async" width="60" height="41" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Ethanol-3D-balls.png/90px-Ethanol-3D-balls.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Ethanol-3D-balls.png/120px-Ethanol-3D-balls.png 2x" data-file-width="1100" data-file-height="754" /></a></span> <br /><br /><br /><br /> <span typeof="mw:File"><a href="/wiki/Buckminsterfullerene" title="Buckminsterfullerene"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Buckminsterfullerene-perspective-3D-balls.png/60px-Buckminsterfullerene-perspective-3D-balls.png" decoding="async" width="60" height="63" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Buckminsterfullerene-perspective-3D-balls.png/90px-Buckminsterfullerene-perspective-3D-balls.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Buckminsterfullerene-perspective-3D-balls.png/120px-Buckminsterfullerene-perspective-3D-balls.png 2x" data-file-width="1056" data-file-height="1100" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Triatomic_molecule" title="Triatomic molecule">Triatomic</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aluminium(I)_hydroxide" class="mw-redirect" title="Aluminium(I) hydroxide">Aluminium(I) hydroxide</a></li> <li><a href="/w/index.php?title=Aluminium_isocyanide&action=edit&redlink=1" class="new" title="Aluminium isocyanide (page does not exist)">Aluminium isocyanide</a></li> <li><a href="/wiki/Amino_radical" title="Amino radical">Amino radical</a></li> <li><a href="/wiki/Carbon_dioxide" title="Carbon dioxide">Carbon dioxide</a></li> <li><a href="/wiki/Carbonyl_sulfide" title="Carbonyl sulfide">Carbonyl sulfide</a></li> <li><a href="/w/index.php?title=CCP_radical&action=edit&redlink=1" class="new" title="CCP radical (page does not exist)">CCP radical</a></li> <li><a href="/wiki/Halonium_ion" title="Halonium ion">Chloronium</a></li> <li><a href="/wiki/Diazenylium" title="Diazenylium">Diazenylium</a></li> <li><a href="/wiki/Dicarbon_monoxide" title="Dicarbon monoxide">Dicarbon monoxide</a></li> <li><a href="/w/index.php?title=Disilicon_carbide&action=edit&redlink=1" class="new" title="Disilicon carbide (page does not exist)">Disilicon carbide</a></li> <li><a href="/wiki/Ethynyl_radical" title="Ethynyl radical">Ethynyl radical</a></li> <li><a href="/w/index.php?title=Formyl_radical&action=edit&redlink=1" class="new" title="Formyl radical (page does not exist)">Formyl radical</a></li> <li><a href="/wiki/Hydrogen_cyanide" title="Hydrogen cyanide">Hydrogen cyanide</a> (HCN)</li> <li><a href="/wiki/Hydrogen_isocyanide" title="Hydrogen isocyanide">Hydrogen isocyanide</a> (HNC)</li> <li><a href="/wiki/Hydrogen_sulfide" title="Hydrogen sulfide">Hydrogen sulfide</a></li> <li><a href="/wiki/Hydroperoxyl" title="Hydroperoxyl">Hydroperoxyl</a></li> <li><a href="/w/index.php?title=Iron_cyanide&action=edit&redlink=1" class="new" title="Iron cyanide (page does not exist)">Iron cyanide</a></li> <li><a href="/w/index.php?title=Isoformyl&action=edit&redlink=1" class="new" title="Isoformyl (page does not exist)">Isoformyl</a></li> <li><a href="/wiki/Magnesium_cyanide" title="Magnesium cyanide">Magnesium cyanide</a></li> <li><a href="/w/index.php?title=Magnesium_isocyanide&action=edit&redlink=1" class="new" title="Magnesium isocyanide (page does not exist)">Magnesium isocyanide</a></li> <li><a href="/wiki/Methylene_(compound)" title="Methylene (compound)">Methylene</a></li> <li><a href="/wiki/Diazenylium" title="Diazenylium">N<sub>2</sub>H<sup>+</sup></a></li> <li><a href="/wiki/Nitrous_oxide" title="Nitrous oxide">Nitrous oxide</a></li> <li><a href="/wiki/Nitroxyl" title="Nitroxyl">Nitroxyl</a></li> <li><a href="/wiki/Ozone" title="Ozone">Ozone</a></li> <li><a href="/wiki/Methylidynephosphane" title="Methylidynephosphane">Methylidynephosphane</a></li> <li><a href="/wiki/Potassium_cyanide" title="Potassium cyanide">Potassium cyanide</a></li> <li><a href="/wiki/Trihydrogen_cation" title="Trihydrogen cation">Trihydrogen cation</a></li> <li><a href="/wiki/Sodium_cyanide" title="Sodium cyanide">Sodium cyanide</a></li> <li><a href="/wiki/Sodium_hydroxide" title="Sodium hydroxide">Sodium hydroxide</a></li> <li><a href="/w/index.php?title=Silicon_carbonitride&action=edit&redlink=1" class="new" title="Silicon carbonitride (page does not exist)">Silicon carbonitride</a></li> <li><a href="/w/index.php?title=C-Silicon_dicarbide&action=edit&redlink=1" class="new" title="C-Silicon dicarbide (page does not exist)">c-Silicon dicarbide</a></li> <li><a href="/w/index.php?title=SiNC&action=edit&redlink=1" class="new" title="SiNC (page does not exist)">SiNC</a></li> <li><a href="/wiki/Sulfur_dioxide" title="Sulfur dioxide">Sulfur dioxide</a></li> <li><a href="/w/index.php?title=Thioformyl&action=edit&redlink=1" class="new" title="Thioformyl (page does not exist)">Thioformyl</a></li> <li><a href="/wiki/Thioxoethenylidene" title="Thioxoethenylidene">Thioxoethenylidene</a></li> <li><a href="/wiki/Titanium_dioxide" title="Titanium dioxide">Titanium dioxide</a></li> <li><a href="/wiki/Tricarbon" title="Tricarbon">Tricarbon</a></li> <li><a href="/wiki/Water" title="Water">Water</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules#Molecules" title="List of interstellar and circumstellar molecules">Four<br />atoms</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acetylene" title="Acetylene">Acetylene</a></li> <li><a href="/wiki/Ammonia" title="Ammonia">Ammonia</a></li> <li><a href="/wiki/Isocyanic_acid" title="Isocyanic acid">Isocyanic acid</a></li> <li><a href="/wiki/Polyyne" title="Polyyne">Cyanoethynyl</a></li> <li><a href="/wiki/Interstellar_formaldehyde" title="Interstellar formaldehyde">Formaldehyde</a></li> <li><a href="/wiki/Fulminic_acid" title="Fulminic acid">Fulminic acid</a></li> <li><a href="/w/index.php?title=HCCN&action=edit&redlink=1" class="new" title="HCCN (page does not exist)">HCCN</a></li> <li><a href="/wiki/Hydrogen_peroxide" title="Hydrogen peroxide">Hydrogen peroxide</a></li> <li><a href="/w/index.php?title=Hydromagnesium_isocyanide&action=edit&redlink=1" class="new" title="Hydromagnesium isocyanide (page does not exist)">Hydromagnesium isocyanide</a></li> <li><a href="/wiki/Isocyanic_acid" title="Isocyanic acid">Isocyanic acid</a></li> <li><a href="/wiki/Thiocyanic_acid" title="Thiocyanic acid">Isothiocyanic acid</a></li> <li><a href="/w/index.php?title=Ketenyl&action=edit&redlink=1" class="new" title="Ketenyl (page does not exist)">Ketenyl</a></li> <li><a href="/w/index.php?title=Methylene_amidogen&action=edit&redlink=1" class="new" title="Methylene amidogen (page does not exist)">Methylene amidogen</a></li> <li><a href="/wiki/Methyl_cation" class="mw-redirect" title="Methyl cation">Methyl cation</a></li> <li><a href="/wiki/Methyl_radical" title="Methyl radical">Methyl radical</a></li> <li><a href="/wiki/Propynylidyne" title="Propynylidyne">Propynylidyne</a></li> <li><a href="/w/index.php?title=Protonated_carbon_dioxide&action=edit&redlink=1" class="new" title="Protonated carbon dioxide (page does not exist)">Protonated carbon dioxide</a></li> <li><a href="/wiki/Protonated_hydrogen_cyanide" title="Protonated hydrogen cyanide">Protonated hydrogen cyanide</a></li> <li><a href="/w/index.php?title=Silicon_tricarbide&action=edit&redlink=1" class="new" title="Silicon tricarbide (page does not exist)">Silicon tricarbide</a></li> <li><a href="/wiki/Thioformaldehyde" title="Thioformaldehyde">Thioformaldehyde</a></li> <li><a href="/wiki/Tricarbon_monoxide" title="Tricarbon monoxide">Tricarbon monoxide</a></li> <li><a href="/wiki/Tricarbon_monosulfide" title="Tricarbon monosulfide">Tricarbon monosulfide</a></li> <li><a href="/wiki/Thiocyanic_acid" title="Thiocyanic acid">Thiocyanic acid</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules#Molecules" title="List of interstellar and circumstellar molecules">Five<br />atoms</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ammonium" title="Ammonium">Ammonium</a> ion</li> <li><a href="/wiki/Polyyne" title="Polyyne">Butadiynyl</a></li> <li><a href="/wiki/Carbodiimide" title="Carbodiimide">Carbodiimide</a></li> <li><a href="/wiki/Cyanamide" title="Cyanamide">Cyanamide</a></li> <li><a href="/wiki/Cyanoacetylene" title="Cyanoacetylene">Cyanoacetylene</a></li> <li><a href="/w/index.php?title=Cyanoformaldehyde&action=edit&redlink=1" class="new" title="Cyanoformaldehyde (page does not exist)">Cyanoformaldehyde</a></li> <li><a href="/wiki/Cyanomethyl" title="Cyanomethyl">Cyanomethyl</a></li> <li><a href="/wiki/Cyclopropenylidene" title="Cyclopropenylidene">Cyclopropenylidene</a></li> <li><a href="/wiki/Formic_acid" title="Formic acid">Formic acid</a></li> <li><a href="/w/index.php?title=Isocyanoacetylene&action=edit&redlink=1" class="new" title="Isocyanoacetylene (page does not exist)">Isocyanoacetylene</a></li> <li><a href="/wiki/Ketene" title="Ketene">Ketene</a></li> <li><a href="/wiki/Methane" title="Methane">Methane</a></li> <li><a href="/wiki/Methoxy" class="mw-redirect" title="Methoxy">Methoxy radical</a></li> <li><a href="/w/index.php?title=Methylenimine&action=edit&redlink=1" class="new" title="Methylenimine (page does not exist)">Methylenimine</a></li> <li><a href="/w/index.php?title=Propadienylidene&action=edit&redlink=1" class="new" title="Propadienylidene (page does not exist)">Propadienylidene</a></li> <li><a href="/w/index.php?title=Protonated_formaldehyde&action=edit&redlink=1" class="new" title="Protonated formaldehyde (page does not exist)">Protonated formaldehyde</a></li> <li><a href="/wiki/Silane" title="Silane">Silane</a></li> <li><a href="/w/index.php?title=Silicon-carbide_cluster&action=edit&redlink=1" class="new" title="Silicon-carbide cluster (page does not exist)">Silicon-carbide cluster</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules#Molecules" title="List of interstellar and circumstellar molecules">Six<br />atoms</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acetonitrile" title="Acetonitrile">Acetonitrile</a></li> <li><a href="/w/index.php?title=Cyanobutadiynyl_radical&action=edit&redlink=1" class="new" title="Cyanobutadiynyl radical (page does not exist)">Cyanobutadiynyl radical</a></li> <li><a href="/w/index.php?title=E-Cyanomethanimine&action=edit&redlink=1" class="new" title="E-Cyanomethanimine (page does not exist)">E-Cyanomethanimine</a></li> <li><a href="/wiki/Cyclopropenone" title="Cyclopropenone">Cyclopropenone</a></li> <li><a href="/wiki/Diacetylene" title="Diacetylene">Diacetylene</a></li> <li><a href="/wiki/Ethylene" title="Ethylene">Ethylene</a></li> <li><a href="/wiki/Formamide" title="Formamide">Formamide</a></li> <li><a href="/w/index.php?title=HC4N&action=edit&redlink=1" class="new" title="HC4N (page does not exist)">HC<sub>4</sub>N</a></li> <li><a href="/wiki/Ketenimine" class="mw-redirect" title="Ketenimine">Ketenimine</a></li> <li><a href="/wiki/Methanethiol" title="Methanethiol">Methanethiol</a></li> <li><a href="/wiki/Methanol" title="Methanol">Methanol</a></li> <li><a href="/wiki/Methyl_isocyanide" title="Methyl isocyanide">Methyl isocyanide</a></li> <li><a href="/wiki/Polyyne" title="Polyyne">Pentynylidyne</a></li> <li><a href="/wiki/Propynal" class="mw-redirect" title="Propynal">Propynal</a></li> <li><a href="/w/index.php?title=Protonated_cyanoacetylene&action=edit&redlink=1" class="new" title="Protonated cyanoacetylene (page does not exist)">Protonated cyanoacetylene</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules#Molecules" title="List of interstellar and circumstellar molecules">Seven<br />atoms</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acetaldehyde" title="Acetaldehyde">Acetaldehyde</a></li> <li><a href="/wiki/Acrylonitrile" title="Acrylonitrile">Acrylonitrile</a> <ul><li><a href="/wiki/Vinyl_cyanide" class="mw-redirect" title="Vinyl cyanide">Vinyl cyanide</a></li></ul></li> <li><a href="/wiki/Cyanopolyyne" title="Cyanopolyyne">Cyanodiacetylene</a></li> <li><a href="/wiki/Ethylene_oxide" title="Ethylene oxide">Ethylene oxide</a></li> <li><a href="/wiki/Glycolonitrile" title="Glycolonitrile">Glycolonitrile</a></li> <li><a href="/wiki/Hexatriynyl_radical" title="Hexatriynyl radical">Hexatriynyl radical</a></li> <li><a href="/wiki/Propyne" title="Propyne">Propyne</a></li> <li><a href="/wiki/Methylamine" title="Methylamine">Methylamine</a></li> <li><a href="/wiki/Methyl_isocyanate" title="Methyl isocyanate">Methyl isocyanate</a></li> <li><a href="/wiki/Vinyl_alcohol" title="Vinyl alcohol">Vinyl alcohol</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules#Molecules" title="List of interstellar and circumstellar molecules">Eight<br />atoms</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acetic_acid" title="Acetic acid">Acetic acid</a></li> <li><a href="/wiki/Aminoacetonitrile" title="Aminoacetonitrile">Aminoacetonitrile</a></li> <li><a href="/w/index.php?title=Cyanoallene&action=edit&redlink=1" class="new" title="Cyanoallene (page does not exist)">Cyanoallene</a></li> <li><a href="/wiki/Ethanimine" title="Ethanimine">Ethanimine</a></li> <li><a href="/wiki/Glycolaldehyde" title="Glycolaldehyde">Glycolaldehyde</a></li> <li><a href="/wiki/Polyyne" title="Polyyne">Hexapentaenylidene</a></li> <li><a href="/wiki/Polyyne" title="Polyyne">Methylcyanoacetylene</a></li> <li><a href="/wiki/Methyl_formate" title="Methyl formate">Methyl formate</a></li> <li><a href="/wiki/Acrolein" title="Acrolein">Acrolein</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules#Molecules" title="List of interstellar and circumstellar molecules">Nine<br />atoms</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acetamide" title="Acetamide">Acetamide</a></li> <li><a href="/wiki/Cyanopolyyne" title="Cyanopolyyne">Cyanohexatriyne</a></li> <li><a href="/wiki/Dimethyl_ether" title="Dimethyl ether">Dimethyl ether</a></li> <li><a href="/wiki/Ethanol" title="Ethanol">Ethanol</a></li> <li><a href="/wiki/Polyyne" title="Polyyne">Methyldiacetylene</a></li> <li><a href="/wiki/Octatetraynyl_radical" title="Octatetraynyl radical">Octatetraynyl radical</a></li> <li><a href="/wiki/Propene" class="mw-redirect" title="Propene">Propene</a></li> <li><a href="/wiki/Ethanethiol" title="Ethanethiol">Ethanethiol</a></li> <li><a href="/wiki/Propionitrile" title="Propionitrile">Propionitrile</a></li> <li><a href="/wiki/N-Methylformamide" title="N-Methylformamide">N-Methylformamide</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules#Molecules" title="List of interstellar and circumstellar molecules">Ten<br />atoms<br />or more</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acetone" title="Acetone">Acetone</a></li> <li><a href="/wiki/Benzene" title="Benzene">Benzene</a></li> <li><a href="/wiki/Benzonitrile" title="Benzonitrile">Benzonitrile</a></li> <li><a href="/wiki/Buckminsterfullerene" title="Buckminsterfullerene">Buckminsterfullerene</a> (C<sub>60</sub>, C<sub>60</sub><sup>+</sup>, fullerene, buckyball)</li> <li><a href="/wiki/C70_fullerene" title="C70 fullerene">C<sub>70</sub> fullerene</a></li> <li><a href="/wiki/Cyanopolyyne" title="Cyanopolyyne">Cyanodecapentayne</a></li> <li><a href="/wiki/Ethylene_glycol" title="Ethylene glycol">Ethylene glycol</a></li> <li><a href="/wiki/Ethyl_formate" title="Ethyl formate">Ethyl formate</a></li> <li><a href="/wiki/Methyl_acetate" title="Methyl acetate">Methyl acetate</a></li> <li><a href="/wiki/Cyanopolyyne" title="Cyanopolyyne">Methyl-cyano-diacetylene</a></li> <li><a href="/wiki/Polyyne" title="Polyyne">Methyltriacetylene</a></li> <li><a href="/wiki/Propionaldehyde" title="Propionaldehyde">Propionaldehyde</a></li> <li><a href="/wiki/Butyronitrile" title="Butyronitrile">Butyronitrile</a></li> <li><a href="/wiki/Pyrimidine" title="Pyrimidine">Pyrimidine</a></li> <li><a href="/w/index.php?title=Heptatrienyl_radical&action=edit&redlink=1" class="new" title="Heptatrienyl radical (page does not exist)">Heptatrienyl radical</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Deuterium" title="Deuterium">Deuterated</a><br />molecules</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ammonia" title="Ammonia">Ammonia</a></li> <li><a href="/wiki/Ammonium" title="Ammonium">Ammonium</a> ion</li> <li><a href="/wiki/Formaldehyde" title="Formaldehyde">Formaldehyde</a></li> <li><a href="/wiki/Interstellar_formaldehyde#Interstellar_reactions" title="Interstellar formaldehyde">Formyl radical</a></li> <li><a href="/wiki/Heavy_water" title="Heavy water">Heavy water</a></li> <li><a href="/wiki/Hydrogen_cyanide" title="Hydrogen cyanide">Hydrogen cyanide</a></li> <li><a href="/wiki/Hydrogen_deuteride" title="Hydrogen deuteride">Hydrogen deuteride</a></li> <li><a href="/wiki/Hydrogen_isocyanide" title="Hydrogen isocyanide">Hydrogen isocyanide</a></li> <li><a href="/wiki/Propyne" title="Propyne">Propyne</a></li> <li><a href="/wiki/Diazenylium" title="Diazenylium">N<sub>2</sub>D<sup>+</sup></a></li> <li><a href="/wiki/Trihydrogen_cation" title="Trihydrogen cation">Trihydrogen cation</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules#Molecules" title="List of interstellar and circumstellar molecules">Unconfirmed</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Anthracene" title="Anthracene">Anthracene</a></li> <li><a href="/wiki/Dihydroxyacetone" title="Dihydroxyacetone">Dihydroxyacetone</a></li> <li><a href="/wiki/Methoxyethane" title="Methoxyethane">Methoxyethane</a></li> <li><a href="/wiki/Glycine" title="Glycine">Glycine</a></li> <li><a href="/wiki/Graphene" title="Graphene">Graphene</a></li> <li><a href="/wiki/Hemolithin" title="Hemolithin">Hemolithin</a></li> <li><a href="/w/index.php?title=H2NCO%2B&action=edit&redlink=1" class="new" title="H2NCO+ (page does not exist)">H<sub>2</sub>NCO<sup>+</sup></a></li> <li><a href="/wiki/Carbon" title="Carbon">Linear C<sub>5</sub></a></li> <li><a href="/wiki/Naphthalene" title="Naphthalene">Naphthalene cation</a></li> <li><a href="/wiki/Phosphine" title="Phosphine">Phosphine</a></li> <li><a href="/wiki/Pyrene" title="Pyrene">Pyrene</a></li> <li><a href="/wiki/Silylidyne" title="Silylidyne">Silylidyne</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_interstellar_and_circumstellar_molecules#See_also" title="List of interstellar and circumstellar molecules">Related</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Abiogenesis" title="Abiogenesis">Abiogenesis</a></li> <li><a href="/wiki/Astrobiology" title="Astrobiology">Astrobiology</a></li> <li><a href="/wiki/Astrochemistry" title="Astrochemistry">Astrochemistry</a></li> <li><a href="/wiki/Atomic_and_molecular_astrophysics" title="Atomic and molecular astrophysics">Atomic and molecular astrophysics</a></li> <li><a href="/wiki/Chemical_formula" title="Chemical formula">Chemical formula</a></li> <li><a href="/wiki/Circumstellar_dust" title="Circumstellar dust">Circumstellar dust</a></li> <li><a href="/wiki/Circumstellar_envelope" title="Circumstellar envelope">Circumstellar envelope</a></li> <li><a href="/wiki/Cosmic_dust" title="Cosmic dust">Cosmic dust</a></li> <li><a href="/wiki/Cosmic_ray" title="Cosmic ray">Cosmic ray</a></li> <li><a href="/wiki/Cosmochemistry" title="Cosmochemistry">Cosmochemistry</a></li> <li><a href="/wiki/Diffuse_interstellar_band" class="mw-redirect" title="Diffuse interstellar band">Diffuse interstellar band</a></li> <li><a href="/wiki/Earliest_known_life_forms" title="Earliest known life forms">Earliest known life forms</a></li> <li><a href="/wiki/Extraterrestrial_life" title="Extraterrestrial life">Extraterrestrial life</a></li> <li><a href="/wiki/Extraterrestrial_liquid_water" title="Extraterrestrial liquid water">Extraterrestrial liquid water</a></li> <li><a href="/wiki/Forbidden_mechanism" title="Forbidden mechanism">Forbidden mechanism</a></li> <li><a href="/wiki/Homochirality" title="Homochirality">Homochirality</a></li> <li><a href="/wiki/Intergalactic_dust" title="Intergalactic dust">Intergalactic dust</a></li> <li><a href="/wiki/Interplanetary_medium" title="Interplanetary medium">Interplanetary medium</a></li> <li><a href="/wiki/Interstellar_medium" title="Interstellar medium">Interstellar medium</a></li> <li><a href="/wiki/Photodissociation_region" title="Photodissociation region">Photodissociation region</a></li> <li><a href="/wiki/Iron%E2%80%93sulfur_world_theory" class="mw-redirect" title="Iron–sulfur world theory">Iron–sulfur world theory</a></li> <li><a href="/wiki/Kerogen" title="Kerogen">Kerogen</a></li> <li><a href="/wiki/Molecules_in_stars" title="Molecules in stars">Molecules in stars</a></li> <li><a href="/wiki/Nexus_for_Exoplanet_System_Science" title="Nexus for Exoplanet System Science">Nexus for Exoplanet System Science</a></li> <li><a href="/wiki/Organic_compound" title="Organic compound">Organic compound</a></li> <li><a href="/wiki/Outer_space" title="Outer space">Outer space</a></li> <li><a href="/wiki/PAH_world_hypothesis" title="PAH world hypothesis">PAH world hypothesis</a></li> <li><a href="/wiki/Pseudo-panspermia" title="Pseudo-panspermia">Pseudo-panspermia</a></li> <li><a href="/wiki/Polycyclic_aromatic_hydrocarbon" title="Polycyclic aromatic hydrocarbon">Polycyclic aromatic hydrocarbon</a> (PAH)</li> <li><a href="/wiki/RNA_world_hypothesis" class="mw-redirect" title="RNA world hypothesis">RNA world hypothesis</a></li> <li><a href="/wiki/Spectroscopy" title="Spectroscopy">Spectroscopy</a></li> <li><a href="/wiki/Tholin" 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