GKFix MCQ Question

Why does silicon dioxide (SiO₂) have a much higher melting point than carbon dioxide (CO₂)?

• A. SiO₂ is ionic, CO₂ is covalent.
• B. CO₂ molecules are larger than SiO₂ units.
• C. SiO₂ forms a giant covalent (network) structure, while CO₂ exists as discrete molecules held by weak van der Waals forces.
• D. Silicon is more electronegative than carbon.