File:Ammonium-2D.svg · Wikimedia Commons · See Wikimedia Commons
ammonium cation
Sign in to saveAlso known as NH4, NH4+, NH4(+), Ammonium(1+), [NH4](+), ammonium ion, ammonium, azanium
Ammonium is a modified form of ammonia that has an extra hydrogen atom. It is a positively charged (cationic) molecular ion with the chemical formula or . It is formed by the addition of a proton (a hydrogen nucleus) to ammonia (). Ammonium is also a general name for positively charged (protonated) substituted amines and quaternary ammonium cations (), where one or more hydrogen atoms are replaced by organic or other groups (indicated by R). Not only is ammonium a source of nitrogen and a key metabolite for many living organisms, but it is an integral part of the global nitrogen cycle. As such
The ammonium cation is ammonia with an extra hydrogen atom attached, making it positively charged, and it serves as an important source of nitrogen for living organisms and plays a central role in the global nitrogen cycle. Ammonium also refers more broadly to other positively charged molecules formed when hydrogen atoms are added to ammonia-like compounds, making it a chemically versatile ion found throughout nature and industry.
AI-generated from the Wikipedia summary — may contain errors.
Chemical data
- Formula
- H4N+
- Molecular weight
- 18.039 g/mol
- IUPAC name
- azane;hydron
- SMILES
- [H+].N
- InChIKey
- QGZKDVFQNNGYKY-UHFFFAOYSA-O
- Polar surface area
- 1 Ų
- H-bond donors
- 2
- H-bond acceptors
- 1
- Formal charge
- 1
via PubChem
Wikidata facts
- Mass
- 18.034
Show 4 more facts
- canonical SMILES
- [NH4+]
- chemical formula
- H₄N⁺
- Commons category
- Ammonium ion
- median lethal concentration (LC50)
- 14.61
Sources (7)
via Wikidata · CC0
~9 min read
Article
9 sectionsContents
- Acid–base properties
- Salts and characteristic reactions
- Structure and bonding
- Organic ions
- Biology
- Human impact
- Metal
- See also
- References
Ammonium is a modified form of ammonia that has an extra hydrogen atom. It is a positively charged (cationic) molecular ion with the chemical formula or . It is formed by the addition of a proton (a hydrogen nucleus) to ammonia (). Ammonium is also a general name for positively charged (protonated) substituted amines and quaternary ammonium cations (), where one or more hydrogen atoms are replaced by organic or other groups (indicated by R). Not only is ammonium a source of nitrogen and a key metabolite for many living organisms, but it is an integral part of the global nitrogen cycle. As such, human impact in recent years could have an effect on the biological communities that depend on it.
== Acid–base properties == thumb|Fumes from hydrochloric acid and ammonia forming a white cloud of [[ammonium chloride]]
Gallery (17)
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