The helium hydride ion, hydridohelium(1+) ion, or helonium is a cation (positively charged ion) with chemical formula HeH+. It consists of a helium atom...

almost any compound. All three isomers function as superbases better than helonium does as a superacid. Lithium monoxide anion Poad, Berwyck L. J.; Reed,...

isomers HC≡NH+ ⇌ N≡CH+2 (protonated hydrogen cyanide) hydrohelium or helonium, better known as helium hydride ion, HeH+ (protonated helium) neonium,...