Drawing lewis structures

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Giovanni Anguiano-Gutierrez 3L
Posts: 52
Joined: Thu Jul 25, 2019 12:17 am

Drawing lewis structures

Postby Giovanni Anguiano-Gutierrez 3L » Sun Nov 03, 2019 10:46 pm

When we draw lewis structures, do we always have to draw the structure with the lowest formal charge?

zachary_nhem_4I
Posts: 57
Joined: Sat Aug 17, 2019 12:18 am

Re: Drawing lewis structures

Postby zachary_nhem_4I » Sun Nov 03, 2019 10:50 pm

Our TA said to try to draw lewis structures with as many bond with a formal charge of 0 (especially on the central element)

305376058
Posts: 35
Joined: Thu Jul 11, 2019 12:17 am

Re: Drawing lewis structures

Postby 305376058 » Sun Nov 03, 2019 10:54 pm

When drawing Lewis structures, I think you should try to draw the one with the lowest formal charge possible.

KTran 1I
Posts: 52
Joined: Fri Aug 30, 2019 12:15 am

Re: Drawing lewis structures

Postby KTran 1I » Sun Nov 03, 2019 10:56 pm

The structure that has the lowest net formal charge is the most probable structure, however, it is important to note that some individual atoms may prefer to have a +/- formal charge due to their electronegativity relative to the other atoms in the molecule. For example, an oxygen atom with a 1- charge would be more representative of how oxygen acts when forming bonds.

Shail Avasthi 3C
Posts: 50
Joined: Fri Aug 30, 2019 12:17 am

Re: Drawing lewis structures

Postby Shail Avasthi 3C » Sun Nov 03, 2019 11:46 pm

Try and minimize your formal charges whenever you draw a Lewis structure, because this means that you have likely found the most stable structure.

005162520
Posts: 50
Joined: Tue Sep 24, 2019 12:17 am

Re: Drawing lewis structures

Postby 005162520 » Sun Nov 03, 2019 11:48 pm

How do we determine when an atom prefers a +/- formal charge based on their electronegativity? Are we suppose to know based on the periodic table?


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