Rf
267.000Rutherfordium
Rutherfordiyum
Rutherfordium is a synthetic transactinide element with atomic number 104. It is the first 6d transition metal and is studied for rutherfordium chloride chemistry, Group 4 behavior and hafnium-zirconium analogies.
104
267 g/mol
[Rn] 5f¹⁴ 6d² 7s²
2 | 8 | 18 | 32 | 32 | 10 | 2
—
23.2 g/cm³
2126.8 °C
5526.9 °C
Joint Institute for Nuclear Research
Rutherfordium was claimed by both JINR Dubna and Berkeley during the transfermium naming disputes. The final IUPAC name honors Ernest Rutherford, a founder of nuclear physics.
Rutherfordium-261
Half-life: About 1 minute. Short-lived isotope with reported long-lived states used in early studies.Rutherfordium-267
Half-life: About 1-2.5 hours. One of the longer-lived rutherfordium isotopes; reported values vary by nuclear data source.RfCl₄
Rutherfordium(IV) ChlorideGas-phase transactinide chemistry compound compared with ZrCl₄ and HfCl₄.RfF₆²⁻
Hexafluororutherfordate ComplexAqueous fluoride complex research in Group 4 chemistry.- Gas-phase chloride chemistry comparing Rf with zirconium and hafnium
- Aqueous Group 4 chemistry research
- Testing relativistic effects in transactinide elements
- Nuclear decay-chain identification studies
Rutherfordium has no biological role. It is synthetic, highly radioactive and exists only as short-lived atoms in laboratory experiments.
- Rutherfordium begins the transactinide region and period 7 transition-metal chemistry.
- Its chemistry broadly follows Group 4 behavior but can show relativistic deviations from zirconium and hafnium trends.
- The rutherfordium naming dispute was one of the central episodes in the transfermium wars.
- Rutherfordium has atomic number 104 and symbol Rf.
- Its listed electron configuration is [Rn] 5f¹⁴ 6d² 7s²; superheavy element values are partly prediction-based.
- Rutherfordium is a Group 4 transactinide below hafnium.
- Remember RfCl₄ and Group 4 chemistry comparisons.
What is the atomic number of rutherfordium?
The atomic number of rutherfordium is 104.
What is the electron configuration of rutherfordium?
Rutherfordium is commonly listed with [Rn] 5f¹⁴ 6d² 7s², but superheavy-element values should be treated as partly prediction-based.
What is rutherfordium used for?
Rutherfordium has no commercial use; it is used in transactinide chemistry and nuclear physics research.
Why is rutherfordium important?
Rutherfordium is the first transactinide and tests whether Group 4 chemistry continues beyond hafnium.
Who is rutherfordium named after?
Rutherfordium is named after Ernest Rutherford.