Element: Copper (Cu)

Element (Atom) NameCopper
SymbolCu
Physical state at room temperatureSolid
Element ClassificationMetal
Group NameNone
Period Number (Periodic table) 4
Group number (Periodic table)11
Atomic number29
Atomic weight63.546 (Ref: Jlab-ele029, ciaaw-copper, Nist-29)
63.55 (Ref: Lanl-29)
Atomic Radius140 pm (Van der Waals) (Ref: Lanl-29)
Density8.933 g/ml (Ref: Jlab-ele029)
Melting point1084.62°C (Ref: Jlab-ele029)
1084.6 °C (Ref: Lanl-29)
Boiling point2562°C (Ref: Jlab-ele029, Lanl-29)
Electron shell configuration1s2 
2s2 2p6 
3s2 3p6 3d10
4s1
Oxidation States+2, +1 (Ref: Jlab-ele029)
−2, +1, +2, +3, +4 ​(a mildly basic oxide) (Ref: Lanl-29)
Ionization Energy7.726 eV (Ref: Jlab-ele029)
7.726380  eV (Ref: Nist-29)
Number of Stable Isotopes2
InChIInChI=1S/Cu (Ref: Pubchem-29)
InChI KeyRYGMFSIKBFXOCR-UHFFFAOYSA-N (Ref: Pubchem-29)
Remarks 

REFERENCES

  • Jlab-ele029: https://education.jlab.org/itselemental/ele029.html
  • Lanl-29: https://periodic.lanl.gov/29.shtml
  • ciaaw-copper: https://www.ciaaw.org/copper.htm
  • Nist-29 : https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=29
  • Pubchem-29: https://pubchem.ncbi.nlm.nih.gov/element/29
  • science.co.il: https://www.science.co.il/elements/

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