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
