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The correct decreasing order of lattice energy is;
A
KF KCl KBr KI
B
KCl KF KBr KI
C
KBr KCl KF KI
D
KI KBr KCl KF
Explanation
Smaller is the size of cation or anion, more will be the lattice energy of ionic compound. :contentReference[oaicite:2]{index=2}
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