Enter the total number of valence electrons, lone pairs of electrons, and the total number of bound electrons to calculate the formal charge.

## Formal Charge Formula

The following equation is used to calculate the formal charge of an atom.

FC = V – ( LP +.5 * BE)

- Where FC is the formal charge
- V is the number of valence electrons
- LP is the number of lone pair electrons
- BE is the number of bound electrons

## Formal Charge Definition

A formal charge is defined as the electrical charge of an individual atom.

## Formal Charge Example

How to calculate a formal charge?

**First, determine the valence electrons.**Calculate the total number of valence electrons.

**Next, determine the number if lone pair electrons.**Calculate how many electrons are lone pairs.

**Next, determine the number of bound electrons.**Calculate the total number electrons that are bound.

**Finally, calculate the formal charge.**Using the equation above, calculate the formal charge.

## FAQ

**What is formal charge?**

The formal charge is the electrical charge of an individual atom that is contained within a larger molecule.

**How is formal charge calculated?**

The formal charge is calculated using the valence, lone pair, and bound electrons of the atom to its surrounding molecule.