Rhenium (Re) - Element 75 | Properties & Electron Configuration
What is Rhenium?
Rhenium (Re) is element 75, a transition metal in period 6, group 7. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d⁵ 6s².
| Atomic Number | 75 |
| Symbol | Re |
| Atomic Mass | 186.21 u |
| Category | Transition Metal |
| Period | 6 |
| Group | 7 |
| Block | d |
| Electron Configuration | 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d⁵ 6s² |
| Short Config | [Xe] 4f¹⁴ 5d⁵ 6s² |
| Electronegativity | 1.9 |
| Atomic Radius | 135 pm |
| Ionization Energy | 760 kJ/mol |
| Electron Affinity | 14 kJ/mol |
| Phase (STP) | Solid |
Electron Configuration
The full electron configuration of Rhenium is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d⁵ 6s². In noble gas shorthand, this is written as [Xe] 4f¹⁴ 5d⁵ 6s².
Rhenium is a d-block element in group 7, period 6.
Periodic Trends
Electronegativity: Rhenium has a Pauling electronegativity of 1.9. Within group 7, electronegativity generally decreases down the group.
Atomic Radius: 135 pm. Across period 6, atomic radius generally decreases left to right as nuclear charge increases.
Ionization Energy: 760 kJ/mol. Ionization energy generally increases across a period and decreases down a group.
View all 118 elements with trend overlays for electronegativity, atomic radius, ionization energy, and electron affinity.
Explore Rhenium on the Interactive Periodic TableRelated Topics
Manganese (Mn)
Properties of Manganese - same group as Rhenium
Technetium (Tc)
Properties of Technetium - same group as Rhenium
Bohrium (Bh)
Properties of Bohrium - same group as Rhenium
Cesium (Cs)
Properties of Cesium - same period as Rhenium
Barium (Ba)
Properties of Barium - same period as Rhenium
Lanthanum (La)
Properties of Lanthanum - same period as Rhenium