Fluorine vs Osmium

PropertyF FluorineOs Osmium
Atomic number976
SymbolFOs
NameFluorineOsmium
Categoryhalogentransition-metal
Standard Atomic Weight18.998403 u190.23 u
Period26
Group178
Blockps
Phase at STPgassolid
Electron configuration[He]2s22p5[Xe]6s24f145d6
Oxidation states-1[-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)3.982.2
Electron affinity3.4011 eV1.1 eV
Density1.696 kg/m³2.258720e+4 kg/m³
Melting point-219.62 °C3032.85 °C
Boiling point-188.12 °C5011.85 °C
Discovery year18861803