Atomic number 75
Rhenium
Transition metal
Quick facts
- Atomic mass
- 186.21
- Group
- 7
- Period
- 6
- State (STP)
- solid
- Electronegativity
- 1.90
- Common ox. states
- +4, +7
Properties
Electron configuration
[Xe] 4f¹⁴ 5d⁵ 6s²
- Ionization energy
- 760.0 kJ/mol
- Electron affinity
- 14.5 kJ/mol
- Melting point
- 3459.00 K (3185.8 °C)
- Boiling point
- 5869.00 K (5595.9 °C)
How it bonds
Rhenium has the third-highest melting point and shows the full range +1 to +7 with +7 (Re₂O₇) most common. One of the rarest stable elements. Used in jet-engine turbine blades.