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Which statement best describes the typical properties of most ionic compounds?
- high melting points and low boiling points
- high melting points and nondirectional bonds
- high solubilities in polar solvents and low solubilities in nonpolar solvents
- three-dimensional network structures, and are good conductors of electricity in the molten state
Correct answer: three-dimensional network structures, and are good conductors of electricity in the molten state
Solution
Ionic compounds are giant 3D lattices of ions; they are nonconductors as solids but conduct in the molten/aqueous state where ions are mobile, making the last statement the most complete and correct description.
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