Ytterbium vs Copernicium

PropertyYb YtterbiumCn Copernicium
Atomic number70112
SymbolYbCn
NameYtterbiumCopernicium
Categorylanthanidetransition-metal
Standard Atomic Weight173.054 u285 u
Period67
GroupN/A12
Blockss
Phase at STPsolidgas
Electron configuration[Xe]6s24f14[Rn] 7s2 5f14 6d10(predicted)
Oxidation states[0, 1, 2, 3][2, 4]
Electronegativity (Pauling)N/AN/A
Electron affinity-0.02 eV-0.8 eV
Density6900 kg/m³1.400000e+4 kg/m³
Melting point818.85 °C-273.15 °C
Boiling point1195.85 °C-165.15 °C
Discovery year18781996