Name Silicon
Symbol Si
Atomic Number 14
Atomic Mass 28.086 atomic mass units
Number of Protons 14
Number of Neutrons 14
Number of Electrons 14
Melting Point 1410.0 C
Boiling Point 2355.0 C
Density 2.329 grams per cubic centimeter
Normal Phase Solid
Family Metalloids
Period 3
Cost $50 per pound



Origin of Name From the Latin silicus, meaning flint
Date and Place of Discovery In 1824 in Stockholm, Sweden
Discovered by Jons Jakob Berzelius
Common Compounds
Interesting facts
  • It is the second most abundant element in the earth's crust at 25.7%.
  • It is found in the sun and stars.
  • It is found in meteorites known as aerolites.\
  • It is not found free in nature.
  • It is found in oxide and silicates (sand, quartz, amethyst, agate, flint, jasper, opal, and citrine).
  • Its minerals can be found in granite, hornblende, feldspar, mica, clay, and asbestos.
Common Uses
  • Transistors
  • Solar cells
  • Electronic solid-state devices
  • Glass
  • Mechanical, optical, thermal and electrical devices
  • Computer chips
  • Lubricants
  • Concrete
  • Bricks
  • Silicone implants


Photo Courtesy of
About: Chemistry
Jefferson Labs
Web Elements

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