Question: how many hydrogen atoms are directly attached to the nitrogen atom of a tertiary amine?
Answer: -Primary amine (1°) - nitrogen atom is bonded to one hydrocarbon group and two hydrogen atoms. -Secondary amine (2°) - nitrogen atom is bonded to two hydrocarbon groups and one hydrogen atoms. -Tertiary amine (3°) - nitrogen atom is bonded to three hydrocarbon groups and no hydrogen atoms.