Problem: Which of the following has the lowest melting point?(A) H2O (B) KBr (C) LiF (D) Kr (E) Ne

FREE Expert Solution

We’re being asked to determine which among the compound with the highest melting point.


Ionic compounds (metal + non-metal) have a very high melting point when compared to molecular compounds (non-metals only). 


Recall that the melting point of an ionic compound is related to its lattice energy. The lattice energy can be estimated using:

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Problem Details

Which of the following has the lowest melting point?

(A) H2

(B) KBr 

(C) LiF 

(D) Kr 

(E) Ne