Holmium vs Ytterbium

PropertyHo HolmiumYb Ytterbium
Atomic number6770
SymbolHoYb
NameHolmiumYtterbium
Categorylanthanidelanthanide
Standard Atomic Weight164.93033 u173.054 u
Period66
GroupN/AN/A
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f11[Xe]6s24f14
Oxidation states[0, 1, 2, 3][0, 1, 2, 3]
Electronegativity (Pauling)1.23N/A
Electron affinity0.338 eV-0.02 eV
Density8800 kg/m³6900 kg/m³
Melting point1473.85 °C818.85 °C
Boiling point2699.85 °C1195.85 °C
Discovery year18781878