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The lattice energy is the energy released when gaseous ions come together to form an ionic solid. Generally, higher charged ions lead to more favorable lattice energy because the electrostatic attraction between opposite charges is stronger.
However, some stable ionic compounds have 1:1 charged ions (e.g., NaCl) instead of ions with larger charges (e.g., Na³⁺ and Cl³⁻). This is often due to the stability of the 1:1 ratio, which results in a more balanced and compact arrangement in the crystal lattice.
