Rutherfordium

Rutherfordium is a chemical element with symbol Rf and atomic number 104, named in honor of New Zealand physicist Ernest Rutherford. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 267Rf, has a half-life of approximately 1.3 hours.

In the periodic table of the elements, it is a d-block element and the first of the transactinide elements. It is a member of the 7th period and belongs to the group 4 elements. Chemistry experiments have confirmed that rutherfordium behaves as the heavier homologue to hafnium in group 4. The chemical properties of rutherfordium are characterized only partly. They compare well with the chemistry of the other group 4 elements, even though some calculations had indicated that the element might show significantly different properties due to relativistic effects.

In the 1960s, small amounts of rutherfordium were produced in laboratories in the former Soviet Union and in California. The priority of the discovery and therefore the naming of the element was disputed between Soviet and American scientists, and it was not until 1997 that International Union of Pure and Applied Chemistry (IUPAC) established rutherfordium as the official name for the element.

Read more about RutherfordiumNucleosynthesis, Isotopes, Experimental Chemistry

Other articles related to "rutherfordium":

Group 4 Element
... titanium (Ti), zirconium (Zr), hafnium (Hf) and rutherfordium (Rf) ... However, the fourth element rutherfordium (Rf), has been synthesized in the laboratory none of its isotopes have been found occurring in nature ... All isotopes of rutherfordium are radioactive ...
Symbol (chemical Element) - Symbols Not Currently Used
... Db Dubnium 104 Proposed name for rutherfordium ... Ku Kurchatovium 104 Proposed name for rutherfordium ... Rf Rutherfordium 106 Proposed name for seaborgium ...
Copernicium - History - Official Discovery
... This was primarily related to the contradicting decay data for the known nuclide rutherfordium-261 ... and were able to confirm the decay data for hassium-269 and rutherfordium-261 ... It was found that the existing data on rutherfordium-261 was for an isomer, now designated rutherfordium-261a ...
Isotope Lists, 97+ - Rutherfordium
... Main article Isotopes of rutherfordium Isotope Half-life Spin Parity Mode(s) or Abundance 253Rf 1.8 s %SF ~ 50, %α ~ 50 253m1Rf 50 μs 254Rf 0.5 ms 0+ %SF=100, %α ~ 0.3 sys 254m1Rf 23 μs 255Rf 1.5 s (9/2- ) %SF=52 ...
Rutherfordium - Experimental Chemistry - Aqueous Phase
... Rutherfordium is expected to have the electron configuration 5f14 6d2 7s2 and therefore behave as the heavier homologue of hafnium in group 4 of the periodic table ... The most conclusive aqueous chemistry studies of rutherfordium have been performed by the Japanese team at Japan Atomic Energy Research Institute using ... hydrochloric acid solutions using isotopes of rutherfordium, hafnium, zirconium, and thorium have proved a non-actinide behavior ...