Compound
hydron
The general name for the hydrogen nucleus, to be used without regard to the hydrogen nuclear mass (either for hydrogen in its natural abundance or where it is not desired to distinguish between the isotopes).
Definition from ChEBI (CHEBI:15378), read 2026-09-23. CC BY 4.0.
CHEBI:15378ChEBI
Structure
Drawn to one scale across every element, so a circle here is comparable with the same circle on another page. The radii themselves are beside this.
- Atomic radius
- 25 pm
- Electronegativity
- 2.2 Pauling
- Class
- Element, as a monatomic cation
- Formula
- H
- Mass
- 1.008 g/mol
- Charge
- +1
- InChIKey
- GPRLSGONYQIRFK-UHFFFAOYSA-N
- SMILES
- [H+]
- Look it up
- ChEBIBy InChIKey
Identity from ChEBI. Not evidence.
Reactions
10,337 reactions
A common cofactor or currency species. Appears in 10,337 reactions — see the full list.
Other names
2 names
Resolves to: hydron
- Also called
- H+
- Systematic name
- hydrogen(1+)