Formal Charge terms
Posted: Tue May 15, 2018 12:30 am
by Maria Roman 1A
What equation should we use to calculate formal charge and what do the terms mean?
Re: Formal Charge terms
Posted: Tue May 15, 2018 9:14 am
by Luis Avalos 1D
I like to do the following formula to calculate it:
formal charge = valence electrons of the atom - (lone pairs + .5* bonded electrons).
Re: Formal Charge terms
Posted: Tue May 15, 2018 10:21 am
by Gianna Graziano 1A
Hi Maria,
This is what each of the terms mean:
FC (Formal Charge)- the charge that is given to a molecule, assuming equal sharing of electrons in chemical bonds.
VE (Valance Electrons)- outer shell electrons that participate in bonding.
In order to find the VE, in the first and second period, the number of valance electrons is the period number. For periods 13-18, the number of valance electrons is that number minus 10.
LP (Lone Pairs)- a set of valance electrons that are not shared with another atom.
BE (Bonded Electrons)- the electrons, in the outer shell, which can participate in bonding.