Rf (Eka-Hafnium) occurs as chemical element in the periodic table that has the symbol Rf & atomic number 104. This occurs as extremely radioactive synthetic element whose most stable isotope has a half life of less than 70 seconds. This element so is non utilized for any price & little is known all about it. Rf is the foremost transactinide element and it is predicted to stand chemical properties similar to hafnium.

History
Unnilquadium (known as inside honor of Lord Rutherford of Nelson) was reportedly first synthesized in 1964 at the Joint Nuclear Search Institute at Dubna (U.S.S.R.). Investigator there bombarded plutonium with accelerated 113 to 115 MeV neon ions and claimed that it found nuclear fission tracks in the favorite nature and severity of glass sustaining the microscope which indicated the presence of the freshly element.

Within 1969 researchers at the University of California, Berkeley synthesized the element by subjecting californium-249 and carbon-12 to high energy collisions. A UC class action besides stated that it may not reproduce a earliest synthesis by Soviet man of science.

This resulted within an element naming controversy; Since the Soviets claimed that it wwhen foremost found inside Dubna, Dubnium (Db) was suggested, as was Kurchatovium & symbol Ku for unq, within honor of Igor Vasilevich Kurchatov (1903-1960), former Head of Soviet Nuclear Locate. the Americans, nonetheless, proposed Rf (symbol Rf) for the newly element to honor Ernest Rutherford, a noted nuclear physicist from either New Zealand. A International Union of Pure & Applied Chemistry (IUPAC) adopted Unnilquadium (symbol Unq) as a irregular, systematic element name. Nonetheless inside 1997 they resolved a dispute & adopted the todays title.