Which one of the following characteristics is not usually attributed to ionic substances?
Correct answer: C. Fragility
- A. High melting point
- B. Deform when struck
- C. Fragility
- D. Crystalline
Explanation
Fragility refers to the tendency of a substance to break or shatter easily. Some ionic substances may be brittle, fragility is not a typical characteristic attributed to them. Fragility is more commonly associated with substances that have weak intermolecular forces or lack a well-defined crystalline structure.
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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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