Question

CO2 is a gas but SiO2 is a solid. Why?? Want proper answer ​

Answer 1

Explanation:

Silica (SiO2) has a three dimensional structure. It has very strong Si-O bonds and it has a high melting point.

However, in CO2 (which has a linear shape) there are weak C-O bonds with no dipole moment and it has sp hybridisation. Due to this type of bonding and large gaps in CO2 molecule, CO2 is a gas.

Therefore CO2 is a gas and SiO2 is a solid.

Answer 2

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Their chemical structures are different.

Carbon dioxide is a linear structure with two doubles bond between carbon and oxygen. hence it is gas while silicon dioxide is not formed of small molecules...

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