:Xenonium

{{Chembox

|Section1={{Chembox Identifiers

| CASNo = 37276-91-8

| CASNo_Ref = {{Cascite|changed|NIST}}{{cite web |author1=NIST Office of Data and Informatics |title=HXe+ |url=https://webbook.nist.gov/cgi/formula?ID=C37276918 |website=webbook.nist.gov |language=en}}

| StdInChI=1S/HXe/h1H/q+1

| StdInChIKey=YPQLIBJXUXECHV-UHFFFAOYSA-N

| SMILES = [XeH+]

}}

|Section2={{Chembox Properties

| Xe=1|H=1|Formula_Charge=+

}}

|Section8={{Chembox Related

| OtherCompounds=Helium hydride; Neonium, Argonium, Kryptonium

}}

}}

The xenonium ion, XeH⁺, is an onium compound, consisting of protonated xenon. Although the existence of the xenonium salts has not been proven, the isolated XeH⁺ ion is known.{{cite journal |last1=Grandinetti |first1=Felice |title=Gas-Phase Ion Chemistry of the Noble Gases: Recent Advances and Future Perspectives |journal=European Journal of Mass Spectrometry |date=October 2011 |volume=17 |issue=5 |pages=423–463 |doi=10.1255/ejms.1151|doi-access=free }} Salts of the fluoroxenonium ion, XeF⁺, are known to exist, for instance fluoroxenonium pentafluoroplatinate (XeFPtF₅), more commonly known as xenon hexafluoroplatinate.Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. {{ISBN|0-12-352651-5}}.