Lattice Energy Calculator

Constant (k) in kJ·mol⁻¹·nm: Charge of cation (Z₁): Charge of anion (Z₂): Distance between ions (r) in nm:

Lattice Energy: -- kJ/mol

🔍 What is this calculator for?

This calculator helps you determine the Lattice Energy of an ionic compound using the Born–Landé equation.

📌 How to use:

• Enter the constant (k) value.
• Input the charges of the cation (Z₁) and anion (Z₂).
• Provide the distance between ions (r) in nanometers.
• The result will be automatically calculated below.

🧪 Formula:

Lattice Energy = (k × Z₁ × Z₂) / r

Where:
k = constant (depends on compound),
Z₁ = charge of cation,
Z₂ = charge of anion,
r = interionic distance in nm

📘 Example:

For NaCl: k = 1389 kJ·mol⁻¹·nm, Z₁ = +1, Z₂ = -1, r = 0.281 nm

Lattice Energy = (1389 × 1 × -1) / 0.281 = -4946.62 kJ/mol

📎 Link

Inspired by: Strength Calculator