Chromium vs Platinum

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PropertyCr ChromiumPt Platinum
Atomic number2478
SymbolCrPt
NameChromiumPlatinum
Categorytransition-metaltransition-metal
Standard Atomic Weight51.9961 u195.084 u
Period46
Group610
Blockss
Phase at STPsolidsolid
Electron configuration[Ar]3d54s1[Xe]6s14f145d9
Oxidation states[-4, -2, -1, 0, 1, 2, 3, 4, 5, 6][-3, -2, -1, 0, 1, 2, 3, 4, 5, 6]
Electronegativity (Pauling)1.662.28
Electron affinity0.675 eV2.1228 eV
Density7150 kg/m³2.146000e+4 kg/m³
Melting point1906.85 °C1768.4 °C
Boiling point2670.85 °C3824.85 °C
Discovery year17971735