Silicon (Si)

Silicon (Si)

Atomic Number: 14
Atomic Weight: 28.0861
Melting Point: 1410
Boiling Point: 2355
Specific Gravity: 2.33
Valence(s): 4

Silicon is the second most abundant element in the earth's crust (25.7% by weight). It is also present in the Sun and Stars. Opal and agates are Silicon Dioxides. Granite and mica are silicates. Silicon is used to make brick, concrete, and pottery. Sand, which is silicon dioxide, is the principal ingredient of glass. Silicon is widely used in solid-state devices. [LM] {RW}