Ammonium

Ammonium
IUPAC name	Ammonium ion
	Systematic name Azanium
Identifiers
CAS number	14798-03-9
PubChem	16741146
MeSH	D000644
ChEBI	CHEBI:28938
SMILES	[NH4+]
	InChI
Properties
Molecular formula	H4N
Molar mass	18.04 g mol-1
Acidity (pKa)	9.25
Structure
Molecular shape	Tetrahedral
	Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

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.

Ammonium Media

Fumes from hydrochloric acid and ammonia forming a white cloud of ammonium chloride
Bildung von Ammonium aus Ammoniak
Dimethylammonium-formation-2D

This short article about chemistry can be made longer. You can help Wikipedia by adding to it.

Ammonium


IUPAC name	Ammonium ion
Systematic name Azanium^[1]
Identifiers
CAS number	14798-03-9
PubChem	16741146
MeSH	D000644
ChEBI	CHEBI:28938
SMILES	[NH4+]
InChI InChI=1/H3N/h1H3/p+1
Properties
Molecular formula	H₄N
Molar mass	18.04 g mol^-1
Acidity (pK_a)	9.25
Structure
Molecular shape	Tetrahedral
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)