Lewis Structures- formal charge

[Shundeen Martinez 1D]

How can you find the formal charges on each atom in a Lewis structure?

[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.

[Javier_Ochoa_DIS_3J]

This is the equation to find the formal charge.

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

[Lauren Ho 2E]

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!

[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! :)