Tungsten vs Rutherfordium

PropertyW TungstenRf Rutherfordium
Atomic number74104
SymbolWRf
NameTungstenRutherfordium
Categorytransition-metaltransition-metal
Standard Atomic Weight183.84 u263 u
Period67
Group64
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f145d4[Rn]7s25f146d2
Oxidation states[-4, -2, -1, 0, 1, 2, 3, 4, 5, 6][3, 4]
Electronegativity (Pauling)2.36N/A
Electron affinity0.815 eV0.65 eV
Density1.930000e+4 kg/m³2.330000e+4 kg/m³
Melting point3421.85 °C2126.85 °C
Boiling point5554.85 °C5526.85 °C
Discovery year17811964