Atomic Element Z = 75 • Transition Metal
Rhenium (Re) — Atomic Data, Electron Shells & Reactions
Rhenium (symbol Re, atomic number 75) has a standard atomic weight of 186.21 u and ground-state configuration [Xe] 4f14 5d5 6s2.
Atomic Number (Z)
75
IUPAC Symbol
Re
Standard Atomic Weight
186.21 g/mol
Period / Group / Block
6 / 7 / d-block
Condensed Electron Config
[Xe] 4f14 5d5 6s2
Full Subshell Config
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d5 6s2
Principal Shell Occupancy
[2, 8, 18, 32, 13, 2]
Pauling Electronegativity
1.9
First Ionization Energy
760 kJ/mol
Covalent Radius
151 pm
Melting Point
3459 K (3185.85 °C)
Boiling Point
5869 K (5595.85 °C)
Density
21.02 g/cm³
Oxidation States
+7, +4
Re (Z=75) — Valence shell highlighted in vermilion