Element: Silicon (Si)

Element (Atom) NameSilicon
SymbolSi
Physical state at room temperatureSolid
Element ClassificationSemi-metal
Group NameNone
Period Number (Periodic table) 3
Group number (Periodic table)14
Atomic number14
Atomic weight28.0855 (Ref: Jlab-ele014)
[28.084, 28.086] (Ref: Ciaaw-silicon, Nist-14)
28.09 (Ref: Lanl-14)
Atomic Radius210 pm (Van der Waals) (Ref: Lanl-14)
Density2.3296 g/cm3 (Ref: Jlab-ele014)
Melting point1414°C (Ref: Jlab-ele014, Lanl-14)
Boiling point3265°C (Ref: Jlab-ele014, Lanl-14)
Electron shell configuration1s2 
2s2 2p6 
3s2 3p2
Oxidation States+4, +2, -4 (Ref: Jlab-ele014)
4, 3, 2, 1 −1, −2, −3, −4 ​(an amphoteric oxide) (Ref: Lanl-14)
Ionization Energy8.152 eV (Ref: Jlab-ele014)
8.15168  eV (Ref: Nist-14)
Number of Stable Isotopes3
InChIInChI=1S/Si (Ref: Pubchem-14)
InChI KeyXUIMIQQOPSSXEZ-UHFFFAOYSA-N (Ref: Pubchem-14)
Remarks 

REFERENCES

  • Jlab-ele014: https://education.jlab.org/itselemental/ele014.html
  • Lanl-14: https://periodic.lanl.gov/14.shtml
  • Ciaaw-silicon : https://www.ciaaw.org/silicon.htm
  • Nist-14 : https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=14
  • Pubchem-14: https://pubchem.ncbi.nlm.nih.gov/element/14
  • science.co.il: https://www.science.co.il/elements/

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