H3OH2O
H3OH2O is not a recognized chemical compound or standard notation in common chemical nomenclature. The string does not correspond to a single isolated molecule described in major databases, and its exact meaning is ambiguous. It appears to concatenate two familiar species—H3O and H2O—but as written it would be chemically inconsistent, since H3O+ (hydronium) carries a positive charge while H2O is neutral.
Possible interpretations are informal or context-specific. In aqueous chemistry, the proton in solution is described by
Stability and occurrence: If such a form were to be encountered, it would more plausibly represent a
See also: Hydronium ion, Water (H2O), Proton transfer, Protonated water clusters.