Element: Boron (B)

Element (Atom) NameBoron
SymbolB
Physical state at room temperatureSolid
Element ClassificationSemi-metal
Group NameNone
Period Number (Periodic table) 2
Group number (Periodic table)13
Atomic number5
Atomic weight10.811 (Ref: Jlab-ele005)
10.81 (Ref: Lanl-5)
[10.806, 10.821] (Ref: ciaaw-boron, Nist-5)
Atomic Radius192 pm (Van der Waals) (Ref: Lanl-5)
Density2.37 g/cm3  (Ref: Jlab-ele005)
Melting point2075°C (Ref: Jlab-ele005)
2076 °C (Ref: Lanl-5)
Boiling point4000°C (Ref: Jlab-ele005)
3927 °C (Ref: Lanl-5)
Electron shell configuration1s2 
2s2 2p1
Oxidation States+3 (Ref: Jlab-ele005)
3, 2, 1, −1, −5 ​(a mildly acidic oxide) (Ref: Lanl-5)
Ionization Energy8.298 eV (Ref: Jlab-ele005)
8.298019 eV (Ref: Nist-5)
Number of Stable Isotopes2
InChIInChI=1S/B (Ref: Pubchem-5)
InChI KeyZOXJGFHDIHLPTG-UHFFFAOYSA-N (Ref: Pubchem-5)
Remarks 

REFERENCES

  • Jlab-ele005: https://education.jlab.org/itselemental/ele005.html
  • Lanl-5: https://periodic.lanl.gov/5.shtml
  • ciaaw-boron: https://www.ciaaw.org/boron.htm 
  • Nist-5 : https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=5
  • Pubchem-5: https://pubchem.ncbi.nlm.nih.gov/element/5
  • science.co.il: https://www.science.co.il/elements/

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