CO2 is gas while SiO2 is solid at room temperature?

Options:

• A. carbon is non-metal while silicon is semi-metal
• B. CO2 is an independent molecule while SiO2 has network covalent structure
• C. CO2 forms multiple bond while silicon does not form multiple bonds
• D. Silicon has all sigma bonds

View Answer

B. CO2 is an independent molecule while SiO2 has network covalent structure