A) \[NaF\]
B) \[NaCl\]
C) \[NaBr\]
D) \[NaI\]
Correct Answer: A
Solution :
NaF has maximum melting point among all these halides. F is highly electronegative element due to which the molecules are highly polar and have strong electrostatic force (Ionic solid). Thus, large amount of heat is required to pull the molecules apart.
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