Question 70: Choose the correct option.
C and Si and the IVA group elements but CO2 is the gas, easy sublimation, while SiO2 is a solid, very hard, refractory. This can be explained by:
a) CO2 molecule network, also has a network of atomic SiO2.
B) SiO2 has a molecular weight greater than CO2.
C) CO2 is a nonpolar molecule, and SiO2 is polar molecule.
d) CO2 is covalent compounds, ionic compounds are SiO2.
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