The electrical conductivity of copper is about 10^22 times greater than that of diamond (carbon). Explain the difference on the basis of the type of bonding in the two materials.
a. Copper has metallic bonding, while diamond has covalent bonding.
b. Copper has ionic bonding, while diamond has metallic bonding.
c. Copper has covalent bonding, while diamond has ionic bonding.
d. Both copper and diamond have metallic bonding.