If the ammonia molecule is NH3, how does another H atom bond to form the ammonium ion?
The ammonium ion is formed when the H atom is bonded to the ammonia molecule by dative covalent bond. This is possible as the N atom of ammonia molecule has a lone pair of electron, which becomes the new N-H bond. The electron on H is lost, forming a positive NH4 ion. Hope this will answer your question…
