JEE Main Chemistry question

Which one of the following is the highest melting halide?

(A)NaCl
(B)NaI
(C)NaBr
(D)NaFCorrect

Answer: (D)

Solution

Among the sodium halides, lattice energy decreases as the halide ion becomes larger (F<Cl<Br<I in size, so lattice energy decreases in that order), and melting point broadly tracks lattice

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Question ID VK-137678