Formal Charge

Formal Charge - Formal Charge = grp number (number of bonds...

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Formal Charge Calculation of a formal charge on a molecule is a mechanism for determining correct Lewis structures The formal charge is the hypothetical charge on an atom in a molecule or polyatomic ion. The best Lewis structures will have formal charges on the atoms that are zero or nearly zero. Rules for Assigning Formal Charge
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Unformatted text preview: Formal Charge = grp number (number of bonds + number of unshared e-) An atom that has the same number of bonds as its periodic group number has a formal charge of 0. a. The formal charges of all atoms must sum to 0 in molecules. b. The formal charges must sum to the ions charge for a polyatomic ion....
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