Element: Beryllium (Be)

Element (Atom) NameBeryllium
SymbolBe
Physical state at room temperatureSolid
Element ClassificationMetal
Group NameAlkaline Earth Metal
Group number (Periodic table)2
Period Number (Periodic table) 2
Atomic number4
Atomic Weight9.0121831 (Ref: Jlab-ele004, Ciaaw-beryllium, Nist-4)
9.012 (Ref: Lanl-4)
Atomic Radius153 pm (Van der Waals) (Ref: Lanl-4)
Density 
Melting point1287°C (Ref: Jlab-ele004, Lanl-4)
Boiling point2471°C (Ref: Jlab-ele004)
2469 °C (Ref: Lanl-4)
Electron shell configuration1s2 2s2
Oxidation States+2 (Ref: Jlab-ele004)
Ionization Energy9.323 eV (Ref: Jlab-ele004)
9.322699 eV (Ref: Nist-4)
Number of Stable Isotopes1 (Ref: Jlab-ele004)
+2, +1 (an amphoteric oxide) (Ref: Lanl-4)
InChI1S/Be (Ref: Pubchem-4)
InChI KeyATBAMAFKBVZNFJ-UHFFFAOYSA-N (Ref: Pubchem-4)

REFERENCES

  • Jlab-ele004: https://education.jlab.org/itselemental/ele004.html
  • Lanl-4: https://periodic.lanl.gov/4.shtml
  • Ciaaw-beryllium: https://www.ciaaw.org/beryllium.htm
  • Nist-4 : https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=4
  • Pubchem-4: https://pubchem.ncbi.nlm.nih.gov/element/4
  • science.co.il: https://www.science.co.il/elements/ 

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