Yes, CH3NH2 (methylamine) does exhibit hydrogen bonding.
Hydrogen bonding occurs when a hydrogen atom is covalently bonded to a highly electronegative atom, such as nitrogen, oxygen, or fluorine. In the case of CH3NH2, the nitrogen atom is highly electronegative and is bonded to hydrogen atoms. This creates a polar bond, allowing the hydrogen atoms to engage in hydrogen bonding with other electronegative atoms.
The presence of both the nitrogen atom and hydrogen atoms in methylamine means that it can form hydrogen bonds with other methylamine molecules or with other substances that have electronegative atoms. This characteristic not only influences the physical properties of methylamine, such as boiling point and solubility but also plays a crucial role in its interactions in biological systems.