They are all in the same family
Answer:
Hydrogen Bond
Explanation:
Hydrogen bond interactions are formed between the hydrogen atom bonded to most electronegative atoms (i.e. F, O and N) of one molecule and most electronegative atom (i.e. F, O and N) of another molecule.
In this interaction the hydrogen atom has partial positive charge and electronegative atom has partial negative charge.
So I believe you are supposed to take notes based on the guiding questions (the questions on the side).
Since phosphorus is in the 5th group it has the ability to gain or lose electrons