Which one of the following is an example of a covalent network solid A) SiO₂ B) K C) I₂ D) CaCl₂ E) None of these.

Question

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Covalent network solids are held together by a network of covalent bonds throughout the entire crystal. Option A, SiO₂ (silicon dioxide), is an example of a covalent network solid. Option B, K (potassium), is a metal and does not form covalent bonds. Option C, I₂ (iodine), is a diatomic molecule and does not form a network of covalent bonds. Option D, CaCl₂ (calcium chloride), is an ionic compound and is not held together by covalent bonds.

Which One of the Following Is an Example of a Covalent