Rutherfordium (Rf)
Rutherfordium (Rf) is element 104, a transition metal. Atomic mass 267, configuration [Rn] 5f¹⁴ 6d² 7s². Properties, isotopes, oxidation states, uses and history, with an interactive 3D atom model.
Key facts
| Atomic number | 104 |
|---|---|
| Symbol | Rf |
| Standard atomic weight | 267 |
| Category | Transition Metal |
| Group | 4 |
| Period | 7 |
| Electron configuration | [Rn] 5f¹⁴ 6d² 7s² |
| Valence electrons | 2 (Variable) |
| Common oxidation states | +4 |
| Common ions | No common ions |
| First ionization energy | 580 kJ/mol |
Common uses
- Research only
Where it matters
- Cold War Science (Transfermium Wars)
Hazards
- Radioactive
History
| Discovered | 1964 |
|---|---|
| Discovered by | Dubna (USSR) / Berkeley (USA) |
| Name | Ernest Rutherford |