Silicon in the form of a crystalline solid in blue-grey metallic color is rarely found naturally. It is rather can be found in planets, meteorites and dusts in silicon dioxide forms. Silicon is a second most abundant element that can be found in the Earth's crust, followed by oxygen. When in its elementary form, its crystal structure is similar to that of diamond. This utility element can form semi-conducting crystals for several applications. This semi-conductive metal is useful in manufacturing steel, microchips and solar cells.
It contracts in its liquid state, while expands when solidifies. It forms crystal structure similar to diamond's when crystallized. The atomic structure of this metal makes it ideal to be used in electronics. Silicon readily bond with other elements, because of the four valence electrons.