Rutherfordium
Definition and meaning of Rutherfordium in chemistry.
Rutherfordium is a highly radioactive synthetic element with the symbol Rf and atomic number 104. It is the very first transactinide element and firmly belongs to the transition metals, named in recognition of the pioneering nuclear physicist Ernest Rutherford.
In more detail
Rutherfordium is an artificially produced superheavy element that is synthesized strictly via cold or hot nuclear fusion by bombarding lighter elemental targets with high-energy ions. It is prominently positioned in group 4 of the periodic table, located immediately below hafnium and zirconium, and officially initiates the d-block of the seventh row. Intricate gas-phase and aqueous chemical studies have confirmed that it behaves remarkably similarly to hafnium, primarily exhibiting a +4 oxidation state in its chemical compounds. However, profound relativistic effects significantly influence the behavior of its valence electrons, potentially causing subtle yet measurable deviations from expected periodic trends. Due to its exceptionally short half-life and incredibly low production yields, the element has only ever been studied on a painstaking single-atom basis.
Key facts
| Field | General Chemistry |
|---|---|
| Symbol | Rf |
| Atomic number | 104 |
| Atomic mass | [267] u |
| Category | Transition Metal |
| State at room temperature | Solid (strongly presumed) |
| Year discovered | 1964 by Soviet researchers |
| Group | Group 4 transition metal |
| Crystal structure | Hexagonal close-packed (predicted) |
Rutherfordium is rigorously studied in radiochemistry experiments where it is briefly reacted with chloride ions to form volatile RfCl4, confirming its group 4 chemical identity.
Frequently asked questions
Can you visually see a physical sample of rutherfordium with the naked eye?
No, it is physically impossible to accumulate enough rutherfordium to be visible because of its extremely short half-life and the enormous heat generated by its rapid radioactive decay.
How exactly is rutherfordium synthesized in modern scientific facilities?
It is typically produced by bombarding targets like plutonium or californium with accelerated neon or carbon ions inside a heavy-ion cyclotron.