Rutherfordium is a synthetic element and is the first transactinide element. It has no stable isotopes.
| Property | Value |
|---|---|
| Atomic Number | 104 |
| Symbol | Rf |
| Atomic Mass | [267] u |
| Electron Configuration | [Rn] 5f14 6d2 7s2 |
| State at Room Temperature | Solid (predicted) |