- the univalent ion, NH4+, or group, NH4, which plays the part of a metal in the salt formed when ammonia reacts with an acid.
Origin of ammonium
Examples from the Web for ammonium
Contemporary Examples of ammonium
Ammonium nitrate is extremely common, and pretty dangerous, and also extremely useful.The Most Dangerous Substance in America May Be Fertilizer
April 19, 2013
Historical Examples of ammonium
The solution may be regarded as containing the ammonium cellulose xanthate.Researches on Cellulose
C. F. Cross
On account of the formation of an ammonium salt in the reaction.
Do not mistake the fumes of the acid for those of ammonium chlorid.
Add an excess of ammonia, then a drop or two of ammonium sulfid.
An aqueous solution in the cold is not precipitated by oxalate of ammonium.Cooley's Practical Receipts, Volume II
- (modifier) of, consisting of, or containing the monovalent group NH 4 – or the ion NH 4 +ammonium compounds
- The univalent radical NH4+, that is derived from ammonia and that reacts as a univalent metal in forming ammonium compounds.
- A positively charged ion, NH4, derived from ammonia and found in a wide variety of organic and inorganic compounds. Compounds of ammonium chemically resemble the alkali metals.