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

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Lattice Energy concept. You can view video lessons to learn Lattice Energy. Or if you need more Lattice Energy practice, you can also practice Lattice Energy practice problems.

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