Definition

A type of ion that is formed when ammonia combines with a hydrogen ion. It has a positive charge and is found in various chemical compounds, often similar to those made with alkali metals.

Example

Ammonium is commonly found in fertilizers and is essential for plant growth.

Conversation

Hey, have you ever heard of ammonium?

Yeah, I think it's a chemical ion or something like that.

Right! I was reading that it resembles alkali metals in its properties.

That’s interesting! I didn't know it had similar characteristics.

Synonyms & Antonyms

Root Explanation

Ammonium is derived from the Latin 'ammonium', which comes from the Greek 'ammonion', a diminutive of 'Ammon' (the name of an Egyptian deity). The term originally referred to the salt obtained from the ashes of the plant that grew near the temple of Ammon in Libya. The word 'ammonium' specifically refers to the cation derived from ammonia, which is related to the deity's name due to the historical context of its discovery and use.

Memory Tip

Think of the connection to the Egyptian deity 'Ammon' — this helps you remember that 'ammonium' is named after a place associated with the salt derived from a plant near his temple.

Visually Confused Words