Bromine vs Ruthenium

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PropertyBr BromineRu Ruthenium
Atomic number3544
SymbolBrRu
NameBromineRuthenium
Categoryhalogentransition-metal
Standard Atomic Weight79.904 u101.07 u
Period45
Group178
Blockps
Phase at STPliquidsolid
Electron configuration[Ar]4s23d104p5[Kr]5s14d7
Oxidation states[-1, 1, 2, 3, 4, 5, 7][-4, -2, 1, 2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)2.962.2
Electron affinity3.3635 eV1.05 eV
Density3102.8 kg/m³1.210000e+4 kg/m³
Melting point-7.2 °C2333.85 °C
Boiling point58.8 °C4149.85 °C
Discovery year18251828