Argonium
| Names | |
|---|---|
| IUPAC name Argonium ion | |
| Other names Hydridoargon(1+) argon hydride cation protonated argon | |
| Identifiers | |
| 3D model (JSmol) | |
| CompTox Dashboard (EPA) | |
| 
 | |
| 
 | |
| Properties | |
| ArH+ | |
| Molar mass | 40.956 g·mol−1 | 
| Conjugate base | Argon | 
| Related compounds | |
| Related compounds | Helium hydride ion, Neonium, Kryptonium, Xenonium | 
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references | |
Argonium (also called the argon hydride cation, the hydridoargon(1+) ion, or protonated argon; chemical formula ArH+) is a cation combining a proton and an argon atom. It can be made in an electric discharge, and was the first noble gas molecular ion to be found in interstellar space.