Which substance is a molecular crystal?
Answer and explanation
Correct answer: A. Dry ice (CO)
Dry ice consists of CO molecules held by weak intermolecular forces.
**Answer: Dry ice (CO).**
Why not the others: Diamond: it is a covalent network. Sodium chloride: it is an ionic crystal. Copper: it is a metallic crystal.
**Answer: Dry ice (CO).**
Why not the others: Diamond: it is a covalent network. Sodium chloride: it is an ionic crystal. Copper: it is a metallic crystal.
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