different between hydronium vs hydrogen

English

Etymology

hydro- +? onium

Noun

hydronium (plural hydroniums)

1. (inorganic chemistry) The hydrated hydrogen ion, H₃O⁺.
   • 1996, Richard I. Masel, Principles of Adsorption and Reaction on Solid Surfaces, Wiley, page 148,

     The case of hydronium ions (H₃O⁺) is an example of this. In the gase^[sic] phase, hydronium is a weak acid. The data in Table 3.10 indicates that bare hydronium ions have a higher electron affinity than most metal surfaces, so a bare hydronium ion should be neutralized when it absorbs on a bare metal surface. However, a hydrated hydronium ion is a stronger acid.

   • 2006, Johanna Holm, Forgotten Chemistry: A Refresher Course, Barron's Educational Series, page 160,

     Acids are compounds that produce hydronium ions when mixed with water. […] The hydronium ion is a very special ion because it is the defining particle of all acids.

   • 2016, Philippe Deprez, Textbook of Chemical Peels: Superficial, Medium, and Deep Peels in Cosmetic Practice, 2nd Edition, Taylor & Francis (CRC Press), page 48,

     Hydronium is not a way of stabilizing an acid, because the structure itself is so quickly transient that it can be considered as not existing.

   • 2016, Andrés G. Muñoz, Photoelectrochemical Solar Conversion Systems: Molecular and Electronic Aspects, Taylor & Francis (CRC Press), page 206,

     There is experimental evidence for the formation of coordination groups of hydroniums with several water molecules by hydrogen bridges.

Usage notes

May also be defined as the simplest of a class of oxygen cations with three bonds (i.e., the simplest form of oxonium).

Synonyms

• (hydrated hydrogen ion): hydronium ion

Hypernyms

• (cation of oxygen): oxonium

Coordinate terms

• hydroxide
• hydrogen ion

Translations

Further reading

• Self-ionization of water on Wikipedia.Wikipedia

English

Etymology

From French hydrogène, coined by Louis-Bernard Guyton de Morveau, from Ancient Greek ???? (húd?r, “water”) + ?????? (genná?, “I bring forth”). Corresponding to hydro- + -gen.

Pronunciation

• (Received Pronunciation) IPA^(key): /?ha?d??d?(?)n/
• (General American) enPR: h?'dr?j?n, IPA^(key): /?ha?d??d??n/
• Hyphenation: hy?dro?gen

Noun

hydrogen (countable and uncountable, plural hydrogens)

2. The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.00794.
   • For quotations using this term, see Citations:hydrogen.
3. Molecular hydrogen (H₂), a colourless, odourless and flammable gas at room temperature.
4. An atom of the element.
5. A sample of the element.

Synonyms

• waterstuff
• E949 when used as a packaging agent

Hyponyms

• deuterium
• protium
• tritium

Derived terms

Related terms

Descendants

• ? Burmese: ????????????? (huikda.ruigyang)

Translations

References

• Hydrogen on the British Royal Society of Chemistry's online periodic table

Further reading

• hydrogen on Wikipedia.Wikipedia

Danish

Noun

hydrogen n (singular definite hydrogenet, not used in plural form)

1. hydrogen

   Synonym: brint

Norwegian Bokmål

Noun

hydrogen n (definite singular hydrogenet) (uncountable)

1. hydrogen (chemical element, symbol H)

Derived terms

Norwegian Nynorsk

Noun

hydrogen n (definite singular hydrogenet) (uncountable)

1. hydrogen (chemical element, symbol H)

Derived terms

Welsh

Etymology

Borrowed from English hydrogen.

Pronunciation

• (standard) IPA^(key): /?h?dr????n/

Noun

hydrogen m (uncountable, not mutable)

1. hydrogen

   Synonym: (obsolete) ulai

Derived terms

References

• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present) , “hydrogen”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies