Problem: Which of the following has the highest melting point?RbFKIKFKBrKCl

🤓 Based on our data, we think this question is relevant for Professor Ratliff's class at USF.

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


Recall that the melting point of an ionic compound is related to its lattice energy

The lattice energy can be estimated using:


lattice energy=cation charge×anion chargecation period # + anion period #



This means the compound with the highest lattice energy has the highest melting point.


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Problem Details

Which of the following has the highest melting point?

  1. RbF
  2. KI
  3. KF
  4. KBr
  5. KCl

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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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Based on our data, we think this problem is relevant for Professor Ratliff's class at USF.