Which of the following solids shows hydrogen bonding?
Correct answer: D. Molecular
- A. Ionic
- B. Metallic
- C. Covalent
- D. Molecular
Explanation
Ionic solids are crystals held together by ionic bonding between oppositely charged anions and cations. Metals are solids held together by metallic bonding, i.e., electrostatic forces of attraction between positive cations and a negative sea of delocalized electrons. Covalent solids (like diamonds) are held together by covalent bonds between atoms. Molecular solids are held together by intermolecular forces of attraction, including hydrogen bonding and Vander Waals.
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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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