determining double bonds

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determining double bonds

Postby leediane0916 » Tue Oct 30, 2018 8:54 pm

in molecules like ONF, we know that we need a double bond and the central atom is N but how do we determine if that double bond should be made between O-N or O-F?

Becky Belisle 1A
Posts: 81
Joined: Fri Sep 28, 2018 12:18 am

Re: determining double bonds

Postby Becky Belisle 1A » Tue Oct 30, 2018 8:56 pm

I think oxygen forms two bonds typically and fluroine forms one. This is based on how many electrons they need for the octet guideline.

Cody Do 2F
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: determining double bonds

Postby Cody Do 2F » Tue Oct 30, 2018 9:21 pm

Our TA gave us a chart that told us how many bonds each molecule typically has, as well as the number of lone pairs they have. This apparently helps a lot in O-Chem too, so knowing it in advance will probably help tons.

(# of Bonds, # of Lone Pairs)
Carbon- 4, 0
Hydrogen- 1, 0
Oxygen- 2, 2
Nitrogen- 3, 1
Sulfur- 2, 2
X (Other Atoms)- 1, 3

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