Identify the compounds that engage in hydrogen bonding as pure liquids. select all that apply.

I believe the compounds that engage hydrogen bond in this case are 1-amino-propane, pentanol and HF. Hydrogen bond is a type of electrostatic attraction between a partially electrpositive hydrogen atom and highly electronegative atoms such as Nitrogen, oxygen and fluorine. Therefore, in 1-amino propane (N-H), Pentanol (O-H), HF (F-H).

Rn in the right answer