Rhenium

Atomic number75
Atomic weight186.207
Discovery (year)1925
Atomic radius (A)1.37
Melting point (oC)3180
Boiling point (oC)5627
Density (g/cm3)21.2
Specific heat (cal/g oC)0.033
Ionization potential (eV)7.88
Electron Affinity (eV)0.15