Ammonium

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

Related pages
Ammonium chloride
Ammonia
Protonation
Hydrogen

Category:Nitrogen compounds
Category:Onium ions