Technetium vs Plutonium

PropertyTc TechnetiumPu Plutonium
Atomic number4394
SymbolTcPu
NameTechnetiumPlutonium
Categorytransition-metalactinide
Standard Atomic Weight98 u244 u
Period57
Group7N/A
Blockss
Phase at STPsolidsolid
Electron configuration[Kr]5s24d5[Rn]7s25f6
Oxidation states[-3, -1, 1, 2, 3, 4, 5, 6, 7][2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)1.91.28
Electron affinity0.55 eV-0.5 eV
Density1.100000e+4 kg/m³1.984000e+4 kg/m³
Melting point2156.85 °C639.85 °C
Boiling point4264.85 °C3227.85 °C
Discovery year19371941