Element: Cerium (Ce)

Element (Atom) NameCerium
Physical state at room temperatureSolid
Element ClassificationMetal
Group NameLanthanide
Period Number (Periodic table) 6
Group number (Periodic table)None
Atomic number58
Atomic weight140.116 (Ref: Jlab-ele058, ciaaw-cerium, Nist-58)
140.1 (Ref: Lanl-58)
Atomic Radius235 pm (Van der Waals) (Ref: Lanl-58)
Density6.770 g/cm3. (Ref: Jlab-ele058)
Melting point798°C (Ref: Jlab-ele058)
795 °C (Ref: Lanl-58)
Boiling point3424°C (Ref: Jlab-ele058)
3443 °C (Ref: Lanl-58)
Electron shell configuration1s2 
2s2 2p6 
3s2 3p6 3d10 
4s2 4p6 4d10 4f1 
5s2 5p6 5d1 6s2 
Oxidation States+4, +3 (Ref: Jlab-ele058)
4, 3, 2, 1 ​(a mildly basic oxide) (Ref: Lanl-58)
Ionization Energy5.539 eV (Ref: Jlab-ele058)
5.5386 eV (Ref: Nist-58)
Number of Stable Isotopes1
InChIInChI=1S/Ce (Ref: Pubchem-58)


  • Jlab-ele058: https://education.jlab.org/itselemental/ele058.html
  • Lanl-58: https://periodic.lanl.gov/58.shtml
  • ciaaw-cerium : https://www.ciaaw.org/cerium.htm
  • Nist-58: https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=58
  • Pubchem-58: https://pubchem.ncbi.nlm.nih.gov/element/58
  • science.co.il: https://www.science.co.il/elements/

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