Double Bonds  [ENDORSED]

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Danieljm1B
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Joined: Mon Feb 25, 2019 12:15 am

Double Bonds

Postby Danieljm1B » Wed Jul 10, 2019 7:59 pm

How do you know which bonds get a another bond when drawing a Lewis structure?

hannabarlow1A
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Re: Double Bonds  [ENDORSED]

Postby hannabarlow1A » Wed Jul 10, 2019 8:11 pm

For many molecules, there is more than one way to draw its lewis structure/ many places where you can draw a double bond. For example, for NO3-, there can be a double bond between any one of the oxygen atoms and the nitrogen atom. In actuality, this means that the true structure is more of a blend of the 3 different possible structures, aka "resonance"

Chem_Mod
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Re: Double Bonds

Postby Chem_Mod » Wed Jul 10, 2019 11:03 pm

In addition, thinking about formal charges and which atoms can hold more (or less) than an octet will help you place the double bonds when not all of the possible positions are equivalent, which will be covered in lecture soon :)

jlinwashington1B
Posts: 65
Joined: Fri Sep 28, 2018 12:22 am

Re: Double Bonds

Postby jlinwashington1B » Thu Jul 11, 2019 1:09 pm

There are many resonance structures that correlate with bond formation. However, it is important to make sure that when you create these structures to fulfill the octet rule.

nicknavejas1B
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Re: Double Bonds

Postby nicknavejas1B » Sun Jul 14, 2019 11:21 pm

This thread was so helpful thank you!


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