Ammoniumn
Ammoniumn is not a standard chemical term. It appears to be a misspelling of ammonium, the positively charged ion NH4+. Ammonium is a common component in chemistry, biology, and industry, formed by the protonation of ammonia (NH3).
The ammonium ion has a tetrahedral geometry around nitrogen and carries a single positive charge. In water,
Occurrence and production are widespread. In nature, ammonium arises from biological nitrogen metabolism and the mineralization
Applications and examples include ammonium nitrate, a major fertilizer and industrial explosive; ammonium sulfate and ammonium
Note: If you intended a different term, such as ammonium or ammonium ion in a specific context,