NH4+;AMMONIUM;AMMONIUM ION;AMMONIUMIONS;AmmoniumIonasNH4;AMMONIUM IC STANDARD;AMMONIUM ION STANDARD;AMMONIUM-N IC STANDARD;AMMONIUM ION STANDARD FLUKA;AMMONIUM STANDARD STOCK SOLN
ammonium ion: The monovalentcation NH4+. It may be regarded asthe product of the reaction of ammonia(a Lewis base) with a hydrogenion. The ion has tetrahedral symmetry.The chemical properties of ammoniumsalts are frequently verysimilar to those of equivalent alkalimetalsalts.