Silicon | 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 | - Silicon dioxide (SiO2)
- Silicon carbide (SiC)
- Sodium silicate (Na2SiO3)
- Silicon tetrachloride (SiCl4)
| | 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.com About: Chemistry Jefferson Labs Web Elements Wikipedia | | Silicon Atomic Structure | Elements by Name | Elements by Number | Home | |
