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Question 600331
JEE Chemistry · Hard

Chemical Bonding: Lattice energy MCQ

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Lattice energyHardQuestion 600331

Question

Among NaF, NaCl, NaBr, NaI, the lattice energy decreases in the order:
  1. A
    NaF > NaCl > NaBr > NaI
    Correct
  2. B
    NaI > NaBr > NaCl > NaF
  3. C
    All equal
  4. D
    NaCl > NaF > NaBr > NaI

Correct answer

NaF > NaCl > NaBr > NaI

Explanation

Lattice energy ∝ charge product / distance. As the anion size increases (F NaCl > NaBr > NaI.

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