Terbium vs Bohrium

PropertyTb TerbiumBh Bohrium
Atomic number65107
SymbolTbBh
NameTerbiumBohrium
Categorylanthanidetransition-metal
Standard Atomic Weight158.92535 u270 u
Period67
GroupN/A7
Blockss
Phase at STPsolidN/A
Electron configuration[Xe]6s24f9[Rn]7s25f146d5
Oxidation states[0, 1, 2, 3, 4][3, 4, 5, 7]
Electronegativity (Pauling)N/AN/A
Electron affinity1.124 eV0.44 eV
Density8230 kg/m³3.710000e+4 kg/m³
Melting point1355.85 °C-273.15 °C
Boiling point3229.85 °C-273.15 °C
Discovery year18431976