Tin vs Fermium

PropertySn TinFm Fermium
Atomic number50100
SymbolSnFm
NameTinFermium
Categorypost-transition-metalactinide
Standard Atomic Weight118.71 u257 u
Period57
Group14N/A
Blockps
Phase at STPsolidsolid
Electron configuration[Kr]5s24d105p2[Rn] 5f12 7s2
Oxidation states[-4, -3, -2, -1, 0, 1, 2, 3, 4][2, 3]
Electronegativity (Pauling)1.961.3
Electron affinity1.112 eV0.339 eV
Density7287 kg/m³9700 kg/m³
Melting point231.93 °C1526.85 °C
Boiling point2601.85 °C-273.15 °C
Discovery yearN/A1952