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Kate Manganaro 1F
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Postby Kate Manganaro 1F » Sun May 13, 2018 6:41 pm

In high school I learned a different equation for the formal charge. It is FC = valence e- - owned e- (the electrons that the atom has in the structure. The equation we learned in class is FC = VE - NE - 1/2 * BE. I believe you get the same answer either way, but is one equation more reliable to use than the other?

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Re: Equation

Postby nelquosey » Sun May 13, 2018 7:11 pm

I would use the one we learnt in class to get my answer and use the high school one to check my answer.

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Re: Equation

Postby alexagreco1A » Sun May 13, 2018 7:16 pm

It seems like the one you learned in high school may be a simplified version. Although it gives you the right answer, I feel like you should use the one that was given to us in class in terms of which will be more reliable.

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Re: Equation

Postby Chem_Mod » Sun May 13, 2018 9:07 pm

They are the same thing. I can put it in the same perspective.

FC = valence e- - owned e- = VE - (Lone pair e- + 1/2 * Bonding e-) = VE - LPE - 1/2BE

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