argonium
Sign in to saveAlso known as argonium ion, protonated argon, ArH+, argon hydride cation, hydridoargon(1+)
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.
~6 min read
Encyclopedic overview
7 sectionsContents
- Properties
- Reactions
- Spectrum
- Natural occurrence
- History
- Use
- 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.
==Properties== Argonium is isoelectronic with hydrogen chloride. Its dipole moment is 2.18 D for the ground state. The binding energy is 369 kJ mol−1 (3.9 eV). This is smaller than that of trihydrogen cation| and many other protonated species, but more than that of Dihydrogen cation|.
Excerpted from Wikipedia’s “argonium” article, available under the CC BY-SA 4.0 licence.