Ytterbium vs Lutetium

PropertyYb YtterbiumLu Lutetium
Atomic number7071
SymbolYbLu
NameYtterbiumLutetium
Categorylanthanidelanthanide
Standard Atomic Weight173.054 u174.9668 u
Period66
GroupN/A3
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f14[Xe]6s24f145d1
Oxidation states[0, 1, 2, 3][0, 1, 2, 3]
Electronegativity (Pauling)N/A1.27
Electron affinity-0.02 eV0.346 eV
Density6900 kg/m³9840 kg/m³
Melting point818.85 °C1662.85 °C
Boiling point1195.85 °C3401.85 °C
Discovery year18781907