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Silicon

Template:Silicon


Name Silicon
Atomic Number 14
Atomic Weight 28.0855 amu
Symbol Si
Melting Point ( °C ) 1410.0 'c
Boiling Point ( °C ) 2355.0'c
Density (g/cm3) {{{d}}}
Earth crust (%) {{{ec}}}
Discovery (Year) 1823
Group 4a
Electron configuration {{{config}}}
Ionization energy (eV) {{{eV}}}
    The element silicon has an atomic number of 14 and an atomic mass of 28.0855 amu. It has a melting point of 1410.0 °C and a boiling point of 2355.0 °C. Silicon has 14 protons, neutrons, and electrons. Silicon is classified as a metalloid and has a cubic crystal structure. There are 3 energy levels found in silicon; first energy level: 2, second energy level: 8, third energy level: 4. It has a total of 3 stable
isotopes.

Silicon is used in glass and is the second most abundant element in the Earth’s crust (first is oxygen). It is found in clay, granite, quartz, sand, etc. Silicon forms other useful compounds. Silicon carbide (SiC) is nearly as hard as diamond and is used as an abrasive. Sodium silicate (Na2SiO3), also known as water glass, is used in the production of soaps, adhesives and as an egg preservative. Silicon tetrachloride (SiCl4) is used to create smoke screens Two allotropes of silicon exist at room temperature: amorphous and crystalline. Amorphous appears as a brown powder while crystalline silicon has a metallic luster and a grayish color.

Discovery Of Silicon: Silicon was discovered by Jons Berzelius, a Swedish chemist in 1823 by heating chips of potassium in a silica container and then carefully washing away the residual by-products.. Its name comes from the Latin word silex which means flint. Today, silicon is produced by heating sand with carbon to temperatures approaching 2200°C.