`CO_2` is a gas at room temperature while `SiO_2` is a high melting solid. The best explanation of this difference is that : Si has more electrons than C , The atoms in `CO_2` are bonded by covalent bonds while `SO_2` is an ionic compound, van der Waals' forces are stronger in `SiO_2`, `CO_2` consists of discrete molecules while `SiO_2` has network structure

Options

A. Si has more electrons than C
B. The atoms in `CO_2` are bonded by covalent bonds while `SO_2` is an ionic compound
C. van der Waals' forces are stronger in `SiO_2`
D. `CO_2` consists of discrete molecules while `SiO_2` has network structure

Answer

D

Explanation

`CO_2` consists of discrete molecules while `SiO_2` has network structure