The ammonium cation is a positively charged polyatomic ion with the chemical formula NH+ 4. It is formed by the protonation of ammonia (NH3). Ammonium is also a general name for positively charged or protonated substituted amines and quaternary ammonium cations (NR+ 4), where one or more hydrogen atoms are replaced by organic groups (indicated by R).
近义、反义、联想词
近义词
n.
ammonia
英英词典
ammonium ion n.
the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion