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The product is an insulator but will conduct electricity in the molten state.
The electrons are constrained to the well-defined groups of atoms that constitute the molecules.
These four extreme types of bonding can be represented on the four apexes of a tetrahedron.
(See Figure 2.) The various intermediate types of bonding lie along the edges.
For each category, we must develop a bonding picture, based on electrons, that will lead to an understanding of the physical properties exhibited.
We can classify the solids according to the distribution of the valence electrons of the atoms (as shown in Figure 1), which explains their physical properties. A metal is a substance that can conduct electricity both as a solid and when it is molten.