Enter the numerical ion charges and the distance between ion centers into the calculator to determine the lattice energy.

## Lattice Energy Formula

The following formula is used to calculate lattice energy between ions.

LE = (K * Q1 * Q2) / R
• Where LE is the lattice energy
• K is the constant (2.31 * 10 ^ -19 (J*nm)
• Q1 is the numerical ion charge of ion 1
• Q2 is the numerical ion charge of ion 2
• R is the distance between ions (nm)

To calculate the lattice energy, multiply the constant by the numerical ion charge of ion 1 by the numerical ion charge of ion 2, then divide the result by the distance between ions.

## Lattice Energy Definition

A lattice energy is defined as the total energy released when two charge gas ions attract and form a solid.

## Lattice Energy Example

How to calculate lattice energy?

1. First, determine the charge of ion 1.

For this example, we will say ion 1 has a charge of (-1).

2. Next, determine the charge of ion 2.

For this example, we will say ion 2 has a charge of (+2).

3. Next, determine the distance between ions.

We find the ions for this example to be at a distance of 3 nm.

4. Finally, calculate the lattice energy.

Using the formula and the values from steps 1-3 we find the lattice energy to be, 1.54e^-19.

## FAQ

What is lattice energy?

Lattice energy is the total energy released when two oppositely charged gas ions attract to each other a form a solid.