Periodic Table
75
Re
186.21
Rhenium
Transition MetalVery high melting; superalloys; +7 like Mn.
Electronic Configuration
[Xe] 4f¹⁴ 5d⁵ 6s²or1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f¹⁴ 5d⁵ 6s²
Electron shells
2e⁻n=1
8e⁻n=2
18e⁻n=3
32e⁻n=4
13e⁻n=5
2e⁻n=6
Properties
Atomic number
75
Atomic mass
186.21 u
Category
Transition Metal
Block / Group / Period
d · 7 · 6
Valence electrons
2
Oxidation states
+4, +7
Electronegativity
1.9
Atomic radius
188 pm
Ionization energy
760 kJ/mol
Electron affinity
14 kJ/mol
Melting point
3459 K / 3186 °C
Boiling point
5869 K / 5596 °C
Density
21.02 g/cm³
State at 25 °C
solid
Personal Notes
Add personal notes for Rhenium here...