Manganese vs Ruthenium

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PropertyMn ManganeseRu Ruthenium
Atomic number2544
SymbolMnRu
NameManganeseRuthenium
Categorytransition-metaltransition-metal
Standard Atomic Weight54.938044 u101.07 u
Period45
Group78
Blockss
Phase at STPsolidsolid
Electron configuration[Ar]4s23d5[Kr]5s14d7
Oxidation states[-3, -1, 0, 1, 2, 3, 4, 5, 6, 7][-4, -2, 1, 2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)1.552.2
Electron affinity-0.5 eV1.05 eV
Density7300 kg/m³1.210000e+4 kg/m³
Melting point1245.85 °C2333.85 °C
Boiling point2060.85 °C4149.85 °C
Discovery year17741828