Gadolinium vs Bohrium

PropertyGd GadoliniumBh Bohrium
Atomic number64107
SymbolGdBh
NameGadoliniumBohrium
Categorylanthanidetransition-metal
Standard Atomic Weight157.25 u270 u
Period67
GroupN/A7
Blockss
Phase at STPsolidN/A
Electron configuration[Xe]6s24f75d1[Rn]7s25f146d5
Oxidation states[0, 1, 2, 3][3, 4, 5, 7]
Electronegativity (Pauling)1.2N/A
Electron affinity0.132 eV0.44 eV
Density7900 kg/m³3.710000e+4 kg/m³
Melting point1312.85 °C-273.15 °C
Boiling point3272.85 °C-273.15 °C
Discovery year18861976