Britannica Sources used in this answer

Which elements make up ammonia, NH3?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ammonia, with the chemical formula NH3, is a colorless, pungent gas composed of two elements: nitrogen and hydrogen.1

The ammonia molecule features a trigonal pyramidal structure, consisting of three hydrogen atoms bonded to a single nitrogen atom.2