Yttrium vs Praseodymium

PropertyY YttriumPr Praseodymium
Atomic number3959
SymbolYPr
NameYttriumPraseodymium
Categorytransition-metallanthanide
Standard Atomic Weight88.90584 u140.90766 u
Period56
Group3N/A
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s24d1[Xe]6s24f3
Oxidation states[0, 1, 2, 3][0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)1.221.13
Electron affinity0.307 eV0.962 eV
Density4470 kg/m³6770 kg/m³
Melting point1521.85 °C930.85 °C
Boiling point3344.85 °C3519.85 °C
Discovery year17941885