Final answer:
The compound NH4+ (ammonium ion) will not exhibit hydrogen bonding with nitrogen as it does not have a hydrogen atom bonded to nitrogen that is available to act as a hydrogen bond donor.
Step-by-step explanation:
The question asks which of the following compounds will NOT exhibit hydrogen bonding to the nitrogen (N) atom. To engage in hydrogen bonding, the molecule must have a hydrogen atom bonded to an electronegative element like oxygen (O), nitrogen (N), or fluorine (F), which is not the case for the ammonium ion (NH4+).
As NH4+ lacks a hydrogen atom directly bonded to N (all H's are attached to N and the N carries a positive charge), it cannot act as a hydrogen bond donor. This is different from NH3 (ammonia), dimethylamine ((CH3)2NH), and ethylamine (CH3NH2), which all have N-H bonds that can participate in hydrogen bonding.