Help of 3F.11

[WUng_1D]

Which of the following molecules are likely to form hydrogen bonds: (a) PH3; (b) HBr; (c) C2H4; (d) HNO2?

How can I tell which molecules are more likely to form hydrogen bonds.

[SarahSteffen_LEC4]

An important thing to note is that hydrogen bonds form when an H bonds to either an N, O, or F and there must be lone pairs available for the H to bond to. Thus, this can only be true for d (HNO2).

[Lauren Tanaka 1A]

It might be helpful to draw the Lewis Structures of each molecule. From there you can see which molecules have a hydrogen bonded to N, O, or F atoms. This indicates that there is a hydrogen bond in that particular molecule.

[dtolentino1E]

i know i remember by the acronym FON (the elements fluorine, oxygen, and nitrogen)

[805097738]

I use the saying hydrogen bonds are FON (like fun) to remember that they occur with these atoms. this eliminates a b and c

[Charysa Santos 4G]

In order for a molecule to form hydrogen bonds, at least one hydrogen atom in the molecule must be bonded to either a oxygen, nitrogen, or fluorine atom.