We are asked to explain why the lattice energy of potassium bromide is more exothermic than the lattice energy of rubidium iodide.
Lattice energy represents the union of a gaseous cation and a gaseous anion in the formation of an ionic solid.
There are two main factors that contribute to the lattice energy of an ionic solid:
Rubidium iodide has a lattice energy of -617 kJ/mol, while potassium bromide has a lattice energy of -671 kJ/mol.
Why is the lattice energy of potassium bromide more exothermic than the lattice energy of rubidium iodide?
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