Ytterbium vs Lawrencium

PropertyYb YtterbiumLr Lawrencium
Atomic number70103
SymbolYbLr
NameYtterbiumLawrencium
Categorylanthanideactinide
Standard Atomic Weight173.054 u262 u
Period67
GroupN/A3
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f14[Rn]7s25f146d1
Oxidation states[0, 1, 2, 3][3]
Electronegativity (Pauling)N/AN/A
Electron affinity-0.02 eV0.315 eV
Density6900 kg/m³1.560000e+4 kg/m³
Melting point818.85 °C1626.85 °C
Boiling point1195.85 °C-273.15 °C
Discovery year18781961