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Topic: Why do ionic compounds tend to have high melting points  (Read 7356 times)

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mrg09

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Why do ionic compounds tend to have high melting points
« on: March 27, 2006, 09:14:33 PM »
Quick question:

Why do ionic compounds tend to have high melting points?

Also, why do ionic compounds tend to be hard but brittle?

Thanks for the help :)
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Offline mike

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Re:Why do ionic compounds tend to have high melting points
« Reply #1 on: March 27, 2006, 09:59:42 PM »
Think about intermolecular interactions and intramolecular interactions and compare these with respect to ionic and covalent compounds. :)
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GbPack

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Re:Why do ionic compounds tend to have high melting points
« Reply #2 on: March 28, 2006, 10:30:32 PM »
Agreeing with Mike, a high melting point means strong bonds between the molecules of a compound, or intermolecular bonding.  A stronger bond means it takes more energy, or a higher temperature, to break it and melt.  Therefore, ionic compounds have strong bonds between each of the molecules.  
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