Concept:Lattice energy is a measure of the strength of the electrostatic forces holding ions together in a crystal lattice.
Formula:$$ \text{Lattice Energy} \propto \frac{\text{Charge}}{\text{Size}} $$
Solution:- Because lattice energy depends directly on the ionic charges and the ionic radii (size of the ions), it dictates how tightly the ions can pack together.
- The packing efficiency and the relative sizes of the cations and anions directly determine the geometric shape and overall structure of the ionic compound (e.g., whether it forms an octahedral or cubic lattice).
Why other options are incorrect:- B, C, D: Lattice energy is a concept strictly applicable to ionic lattices. It does not explain covalent, metallic, or molecular bonds.
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