Which one of the following substances crystallizes as a covalent crystal A) CaO B) SiO₂ C) CO₂ D) Pb E) KMnO₄

Name: Which one of the following substances crystallizes as a covalent crystal A) CaO B) SiO 2 C) CO 2 D) Pb E) KMnO 4
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SiO2 (silicon dioxide) is a covalent compound that forms a covalent crystal structure known as quartz. The other choices are either ionic compounds (CaO and Pb) or molecular compounds (CO and KMnO4) that do not typically form covalent crystal structures.

Which One of the Following Substances Crystallizes as a Covalent