Chromium vs Tantalum

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PropertyCr ChromiumTa Tantalum
Atomic number2473
SymbolCrTa
NameChromiumTantalum
Categorytransition-metaltransition-metal
Standard Atomic Weight51.9961 u180.94788 u
Period46
Group65
Blockss
Phase at STPsolidsolid
Electron configuration[Ar]3d54s1[Xe]6s24f145d3
Oxidation states[-4, -2, -1, 0, 1, 2, 3, 4, 5, 6][-3, -1, 0, 1, 2, 3, 4, 5]
Electronegativity (Pauling)1.661.5
Electron affinity0.675 eV0.322 eV
Density7150 kg/m³1.640000e+4 kg/m³
Melting point1906.85 °C3016.85 °C
Boiling point2670.85 °C5457.85 °C
Discovery year17971802