Yttrium vs Ytterbium

PropertyY YttriumYb Ytterbium
Atomic number3970
SymbolYYb
NameYttriumYtterbium
Categorytransition-metallanthanide
Standard Atomic Weight88.90584 u173.054 u
Period56
Group3N/A
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s24d1[Xe]6s24f14
Oxidation states[0, 1, 2, 3][0, 1, 2, 3]
Electronegativity (Pauling)1.22N/A
Electron affinity0.307 eV-0.02 eV
Density4470 kg/m³6900 kg/m³
Melting point1521.85 °C818.85 °C
Boiling point3344.85 °C1195.85 °C
Discovery year17941878