Why is SiO2 a solid and CO2 a gas?
A) A Si atom is heavier than a C carbon.
B) Si has more electrons than C.
C) Intermolecular forces between SiO2 molecules are stronger than those between CO2 molecules.
D) It is preferable to form 4 Si - O single bonds rather than 2 Si - O double bonds.
E) SiO2 forms ionic bonds.
Correct Answer:
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