hydrogen ionhydrogen ion
- the positively charged nucleus of hydrogen, H, without its electron
- hydronium ion
The positively charged ion of hydrogen, H+, formed by removal of the electron from atomic hydrogen and found in the form of hydronium ion in all aqueous solutions of acids.
(plural hydrogen ions)
- (chemistry) Used other than as an idiom: see hydrogen, ion. ; H- or H+
- (chemistry) a proton combined with one or more water molecules; usually written H3O+ and called the hydronium ion though is best considered as H9O4+ but is often written H+(aq) for simplicity
- (chemistry) a bare hydrogen nucleus; a proton , deuteron or triton