Compare the structure of silicon oxide and diamond and describe their physically properties in terms of these structure

Here's what I get  

Explanation:

Both diamond and SiO₂ are network solids. Their atoms are all joined together so a crystal of either diamond or SO₂is one giant molecule.

Structure

In diamond, each C atom is covalently attached to four other C atoms.  

The structure of SiO₂ is like that of diamond. The difference is that there is an O atom between each atom of Si.

Properties

Both substances are