
Concept explainers
Interpretation:
The reason for the thumb rule that when molten rock cools and solidifies crystals of compounds with the smallest lattice energies appear at the bottom of the mass is to be determined.
Concept introduction:
Lattice energy is the amount of energy released when the ions combine to form an ionic compound. It is determined to measure the strength of the ionic interactions present in the lattice. A high negative value of lattice energy is the reason behind the formation of ionic compounds.
The lattice energy of compounds depends upon generally three factors as follows:
1. Ionic Size
2. Ionic Charge
3. Arrangement of ions in the lattice
Lattice energy is directly related to the stability of the compound. Higher the lattice energy more will be the stability of the compound.

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Chapter 9 Solutions
Chemistry: The Molecular Nature of Matter and Change (Looseleaf)
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