Metals Solid Types Network Covalent Network covalent solids are one common type of solids. In a network covalent solid, the atoms are bound to each other by a network of covalent bonds.
Covalent bonds are very strong.
Insoluble in most solvents. Breaking the covalent bonds to dissolve the substance takes a lot of energy. Poor electrical conductivity. The electrons are localized in covalent bonds, not spread out like in a metal . Examples of network covalent substances are diamond, quartz and graphite.