13.1.1 Definition and Significance

• Lattice enthalpy is an exothermic process, meaning it releases energy
• Higher lattice enthalpy values indicate stronger ionic bonds and greater stability
• What does lattice enthalpy measure in terms of ionic compounds?

  Stability and reactivity
• Stable compounds are less reactive because it requires energy to break their bonds
• Two factors affecting lattice enthalpy are the charge of ions and their ionic radii