Lattice Energy Demystified: The Strength of Ionic Compounds

The video tutorial explains the formation of an ionic bond, specifically focusing on the creation of a sodium chloride crystal. It describes how oppositely charged sodium and chloride ions come together to form a crystal lattice, releasing energy known as lattice energy. The tutorial further explains the forces at play within the crystal, including attractive and repulsive forces, and introduces the lattice energy equation, known as the Bornland equation. The calculated lattice energy closely matches experimental values, validating the equation's accuracy.

What is the primary reason for the formation of an ionic crystal lattice?

• The repulsion between different ions

• The attraction between similar ions

• The repulsion between oppositely charged ions

• The attraction between oppositely charged ions

What is lattice energy?

• The energy absorbed when an ionic crystal dissolves

• The energy released when gaseous ions form an ionic crystal

• The energy required to break an ionic bond

• The energy needed to form gaseous ions from a crystal

In an ionic crystal, which type of force is dominant?

• Magnetic forces

• Attractive forces between oppositely charged ions

• Gravitational forces

• Repulsive forces between similar ions

What does the Born-Landé equation calculate?

• The melting point of an ionic crystal

• The lattice energy of an ionic crystal

• The boiling point of an ionic compound

• The solubility of an ionic crystal in water

How does the calculated lattice energy of sodium chloride compare to the experimental value?

• It is significantly higher

• It is significantly lower

• It is unrelated

• It closely matches