Rhenium

Re Rhenium Transition Metal

 

Atomic number:  75 Atomic weight:  186.207
Shells:  2,8,18,32,13,2 Orbitals:  [Xe] 4f14 5d5 6s2
Melting point:  3180°C Boiling point:  5627°C (estimated)
Covalent radius:  1.28 Å Atomic volume:  8.85 cm³/mol
Atomic radius:  1.97 Å Ionic radius:  .53 (+7) Å
Electronegativity:  1.9 Oxidation states:  (7),6,4,2,-1
1st ionization pot.:  7.88 V 2nd ionization pot.:  -- V
3rd ionization pot.:  -- V Specific heat:  0.13 J/gK
Heat of fusion:  33.20 kJ/mol Heat of vapor.:  715.0 kJ/mol
Thermal conduct.:  0.479 W/cmK Electrical conduct.:  0.0542 10^6/cm ohm
Density:  21.0 g/cm³ Valence:  -1,1,2,3,4,5,6,7