It is composed of two elements, nitrogen (N) and hydrogen (H), chemically bonded together in a fixed ratio of 1:3. The chemical formula for ammonia is NH3, indicating that each molecule of ammonia contains one nitrogen atom and three hydrogen atoms.

Ammonia is a colourless gas with a pungent odour. It is highly soluble in water and is commonly used in the production of fertilisers, explosives, and other chemical products.