PERIODIC ELEMENT
Ho (Holmium)

 



Atomic number : 67
Atomic mass : 164.9 g mol-1
Electronegativity according to Pauling : 1.2
Density : 8.8 g cm-3 at 20 °C
Melting point : 1474 °C
Boiling point : 2695 °C
Vanderwaals radius : unknown
Ionic radius : unknown
Isotopes : 4
Electronic shell : [ Xe ] 4f11 6s2
Energy of first ionisation : 580 kJ.mol-1
Energy of second ionisation : 1136.6 kJ.mol-1
Standard potential : - 2.32 V
Discovered by : J.L. Soret in 1878
 
Atomic Structure Uses (nuclear reactors)