Intermolecular association through hydrogen bonding is greatest in which amines?

1. The number of nitrogen-bound hydrogens decides the extent of association. 2. Primary amines have two such hydrogens and secondary have one. 3. This intermolecular association is more in primary amines than in secondary amines. 4. So primary amines associate most. _Source: syllabus Chemistry Part II, Ch 9 'Amines'_