Element: Holmium (Ho)

Element (Atom) NameHolmium
SymbolHo
Physical state at room temperatureSolid
Element ClassificationMetal
Group NameLanthanide
Period Number (Periodic table) 6
Group number (Periodic table)None
Atomic number67
Atomic weight164.93033 (Ref: Jlab-ele067, Nist-67)
164.930328 (Red: ciaaw-holmium)
164.9 (Ref: Lanl-67)
Atomic Radius216 pm (Van der Waals) (Ref: Lanl-67)
Density8.80 g/cm3 (Ref: Jlab-ele067)
Melting point1474°C (Ref: Jlab-ele067)
1461 °C (Ref: Lanl-67)
Boiling point2700°C (Ref: Jlab-ele067)
2600 °C (Ref: Lanl-67)
Electron shell configuration1s2 
2s2 2p6 
3s2 3p6 3d10 
4s2 4p6 4d10 4f11 
5s2 5p6 
6s2 
Oxidation States+3 (Ref: Jlab-ele067)
3, 2, 1 ​(a basic oxide) (Ref: Lanl-67)
Ionization Energy6.022 eV (Ref: Jlab-ele067)
6.0215 eV (Ref: Nist-67)
Number of Stable Isotopes1
InChIInChI=1S/Ho (Ref: Pubchem-67)
InChI KeyKJZYNXUDTRRSPN-UHFFFAOYSA-N (Ref: Pubchem-67)
Remarks 

REFERENCES

  • Jlab-ele067: https://education.jlab.org/itselemental/ele067.html
  • Lanl-67: https://periodic.lanl.gov/67.shtml
  • ciaaw-holmium: https://www.ciaaw.org/holmium.htm
  • Nist-67: https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=67
  • Pubchem-67: https://pubchem.ncbi.nlm.nih.gov/element/67
  • science.co.il: https://www.science.co.il/elements/

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