Final answer:
The pair of compounds that will form hydrogen bonds with one another is CH4 and NH3.
Step-by-step explanation:
The pair of compounds that will form hydrogen bonds with one another is option (B) CH4 and NH3.
Hydrogen bonds occur when a hydrogen atom is bonded to an electronegative atom (oxygen, nitrogen, or fluorine) and is attracted to another electronegative atom in a different molecule. In this case, both CH4 (methane) and NH3 (ammonia) have hydrogen atoms bonded to nitrogen, which is an electronegative atom. Therefore, they can form hydrogen bonds with each other.