Ammonium

Ammonium
Names
	IUPAC name Ammonium ion
	Systematic IUPAC name Azanium
Identifiers
CAS Number	14798-03-9 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:28938;
ChemSpider	218;
MeSH	D000644
PubChem CID	16741146;
UNII	54S68520I4 ;
CompTox Dashboard (EPA)	DTXSID5043974 ;
	SMILES [NH4+];
Properties
Chemical formula	NH+; 4
Molar mass	18.04 g·mol−1
Acidity (pKa)	9.25
Conjugate base	Ammonia
Structure
Molecular shape	Tetrahedral
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Ammonium is an ion. It is an ammonia molecule, NH₃, protonated (with a hydrogen ion added) to make NH₄⁺. It bonds with negative ions such as chloride to make salts such as ammonium chloride. Ammonium is slightly reducing so it can react with strong oxidizing agents.

References

↑ International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. ISBN 0-85404-438-8. pp. 71,105,314. Electronic version.