In the context of naming amines, in what type of amine is the atom bonded to two atoms?
A
Quaternary ammonium ion
B
Tertiary amine
C
Primary amine
D
Secondary amine
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1
Recall the classification of amines based on the number of carbon atoms directly bonded to the nitrogen atom (N).
A primary amine (1°) has the nitrogen atom bonded to one carbon atom and two hydrogen atoms.
A secondary amine (2°) has the nitrogen atom bonded to two carbon atoms and one hydrogen atom.
A tertiary amine (3°) has the nitrogen atom bonded to three carbon atoms and no hydrogen atoms.
A quaternary ammonium ion has the nitrogen atom bonded to four carbon atoms and carries a positive charge, making it a positively charged species rather than a neutral amine.