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Lewis Structures- formal charge

Posted: Tue Oct 30, 2018 10:29 pm
by Shundeen Martinez 1D
How can you find the formal charges on each atom in a Lewis structure?

Re: Lewis Structures- formal charge

Posted: Tue Oct 30, 2018 10:36 pm
by Jocelyne Milke 1G
You use the equation FC= V-(L+S/2), where FC is the formal charge, V is the number of valence electrons, L is the number of lone pairs, and S is the number of shared electrons.

Re: Lewis Structures- formal charge

Posted: Thu Nov 01, 2018 4:46 pm
by Javier_Ochoa_DIS_3J
This is the equation to find the formal charge.

Valance electrons - (lone pair electrons + number of bonds) = Formal charge.

Re: Lewis Structures- formal charge

Posted: Thu Nov 01, 2018 5:27 pm
by Lauren Ho 2E
Javier_Ochoa_DIS_3J wrote:This is the equation to find the formal charge.

Valance electrons - (lone pair electrons + number of bonds) = Formal charge.


I like using this equation more than the FC = V - (L + S/2) one because there is less room for error!

Re: Lewis Structures- formal charge

Posted: Fri Nov 02, 2018 2:30 pm
by Sapna Ramappa 1J
In order to calculate formal charge, use this equation:
FC= V - (L+ (S/2)), where V is the number of valence electrons, L is the number of electrons in lone pairs, and S is the number of shared electrons.

Hope this helps! :)