• Latin name:
  Silicium
• English name:
  Silicon
• Year discovered:
  1823
• Discovered by:
  Jöns Jakob Berzelius
• Country of Discovery:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Cost per 100 grams:
  7.4 USD
• CAS Number:
  CAS7440-21-3
• Electron shell:
  K2-L8-M4-N0-O0-P0-Q0-R0

Silicon is a chemical element with symbol Si and atomic number 14. It is a tetravalent metalloid, more reactive than germanium, the metalloid directly below it in the table. Controversy about silicon's character dates to its discovery.

• Atomic number:
  14
• Atomic weight (Relative atomic mass):
  28.0849993456101 (g/mol)
• Density:
  2.3296 (g/cm³)
• Melting point:
  1414.0°C = 2577.20°F = 1687.15K
• Boiling point:
  3265.0°C = 5909.00°F = 3538.15K
• Valence electrons:
  2, 4
• Period:
  3
• Group:
  IVA
• Block:
  p - block
• Emission spectrum:
  

• Phase:
  Solid

  
• Fusion heat:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Specific heat:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Thermal expansion:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Vaporization heat:
  Upgrade to the PRO version to unlock all the features in this app.

  

• Electron configuration:
  [Ne] 3s2 3p2 = 1s2 2s2 2p6 3s2 3p2
Oxidation states:

• -
• -1
• -2
• 4
• -4
• -
• +1
• +2
• -
• +4
• -
• -
• -
• -
• -
• Ion charge:
  ----
• The ionization potential of an atom:
  8.152 (eV)
• Atomic radius:
  111 (pm)
• Covalent radius:
  114 (pm)
• Van der Waals radius:
  210 (pm)

• Electrical conductivity:
  1000.0 (S/m)
• Electrical type:
  Semiconductor
• Magnetic type:
  Diamagnetism
• Volume magnetic susceptibility:
  -2.73 ⋅ 10^-6
• Mass magnetic susceptibility:
  -1.6 ⋅ 10^-9
• Molar magnetic susceptibility:
  -4.49 ⋅ 10^-11 (m³/mol)
• Resistivity:
  0.001 (Ω · m)
• Superconducting point:
  ----

• Debye temperature:
  371.85°C = 701.33°F = 645K

• Colour:
  Upgrade to the PRO version to unlock all the features in this app.

  
• CAS Number:
  CAS7440-21-3
• CID Number:
  Upgrade to the PRO version to unlock all the features in this app.

  
• RTEC Number:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Brinell hardness:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Mohs hardness:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Vickers hardness:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Bulk modulus:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Young's modulus:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Liquid density:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Molar volume:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Poisson's ratio:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Shear modulus:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Speed of sound transmission:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Refractive index:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Thermal conductivity:
  Upgrade to the PRO version to unlock all the features in this app.

  

• Electronegativity:
  1.9
• Valence electrons:
  2, 4
• Electron affinity:
  134.0684 kJ/mole

• Radioactive:
  No
• Half life:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Lifetime:
  Upgrade to the PRO version to unlock all the features in this app.

  
• Neutron cross section, barn:
  Upgrade to the PRO version to unlock all the features in this app.

  

• Universe contains "Silicon" at the rate of
  0.07%
• Sun contains "Silicon" at the rate of
  0.099%
• Oceans contain "Silicon" at the rate of
  1.0 ⋅ 10^-4%
• Human body contains "Silicon" at the rate of
  0.00142682033853%
• The Earth's crust consists of "Silicon" at the rate of
  28.3%
• Meteorites consist of "Silicon" at the rate of
  14.0%