Entry Test MCQ :: Group III A and IVA Elements

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CO2 is gas while SiO2 is solid at room temperature.

[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

Answer: Option B