Ammonium refers to a class of chemical compounds that contain ammonia (NH3) and a metal ion. These salts are formed when an acidic solution reacts with ammonia, resulting in the transfer of protons from the acid to the ammonia molecule. The positively charged ions left behind after this reaction are called ammonium ions or simply "ammonium."
Ammonium compounds have a wide range of uses and can be found in various household products, such as cleaning agents, fertilizers, and personal care items. They also play an important role in biological processes, serving as the primary source of nitrogen for plants.