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Help of 3F.11

Posted: Mon Nov 11, 2019 4:55 pm
by 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.

Re: Help of 3F.11

Posted: Mon Nov 11, 2019 5:04 pm
by 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).

Re: Help of 3F.11

Posted: Tue Nov 12, 2019 5:44 pm
by 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.

Re: Help of 3F.11

Posted: Tue Nov 12, 2019 5:48 pm
by dtolentino1E
i know i remember by the acronym FON (the elements fluorine, oxygen, and nitrogen)

Re: Help of 3F.11

Posted: Tue Nov 12, 2019 7:13 pm
by 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

Re: Help of 3F.11

Posted: Tue Nov 12, 2019 7:16 pm
by 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.