Question

The compound with highest lattice energy is:

• A. $KBr$
• B. $NaBr$
• C. $LiBr$
• D. $RbBr$

Answer 1

The correct option is C $LiBr$

As $Br$ is common in all molecules, Lattice energy is inversely proportional to radius of cation. As the size of $L{i}^{+}$ is less than other cations, lattice energy of $LiBr$ is more than other molecules.