Which of the following statements about the properties associated with ionic and covalent bonds is correct?
Correct answer: D. lonic compounds differ from metals in that ionic compounds do not conduct electricity in the solid state.
- A. The only covalent compounds with high melting points are those in which hydrogen bonds occur.
- B. Any covalent compound that contains both oxygen and hydrogen in its molecule forms hydrogen bonds.
- C. lonic bonds and covalent bonds cannot both occur in the same compound.
- D. lonic compounds differ from metals in that ionic compounds do not conduct electricity in the solid state.
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About Ionic and Molecular Crystals
Ionic crystals contain oppositely charged ions held by electrostatic forces, whereas molecular crystals contain discrete molecules joined by weaker intermolecular forces. Their structures explain differences in melting point, hardness, volatility, solubility and electrical conductivity, especially between solid and molten states.
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