Tungsten vs Rhenium

Side-by-side comparison of Tungsten (W, element 74) and Rhenium (Re, element 75) by atomic structure and physical properties.

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PropertyW Tungsten Re Rhenium
Atomic number7475
SymbolWRe
NameTungstenRhenium
Categorytransition-metaltransition-metal
Standard Atomic Weight183.84 u186.207 u
Period66
Group67
Blockdd
Phase at STPSolidSolid
Electron configuration[Xe]4f145d46s2[Xe]4f145d56s2
Oxidation states[-4, -2, -1, 0, 1, 2, 3, 4, 5, 6][-3, -1, 0, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)2.361.9
Electron affinity0.815 eV0.060396 eV
Density1.93e+4 kg/m³2.08e+4 kg/m³
Melting point3421.85 °C3185.85 °C
Boiling point5554.85 °C5595.85 °C
Discovery year17811925

Key Differences

PropertyW TungstenRe Rhenium
Standard Atomic Weight183.84 u ↓ lower186.207 u ↑ higher
Density1.93e+4 kg/m³ ↓ lower2.08e+4 kg/m³ ↑ higher
Melting point3421.85 °C ↑ higher3185.85 °C ↓ lower
Boiling point5554.85 °C ↓ lower5595.85 °C ↑ higher
Electronegativity (Pauling)2.36 ↑ higher1.9 ↓ lower
Electron affinity0.815 eV ↑ higher0.060396 eV ↓ lower
Group6 7
Electron configuration[Xe]4f145d46s2 [Xe]4f145d56s2
Discovery year1781 1925