Linked from
The 98 pages that link to Ammonia, each with the reason it gives.
Nitrogen fixationBroader topic: It is the principal product of nitrogenase-catalyzed fixation.
Dipole momentBroader topic: Its geometry prevents the N–H bond contributions from canceling.
Lone pairBroader topic: Nitrogen’s lone pair gives ammonia its pyramidal geometry and basicity.
Bond angleBroader topic: Its H–N–H angles are about 107°, smaller than the tetrahedral ideal.
Weak baseBroader topic: Ammonia is a standard example of a weak base in aqueous chemistry.
Pnictogen hydrideBroader topic: It is the most widely produced and used pnictogen hydride.