Rutherfordium

science

1. Timeline of Rutherfordium

2. Rutherfordium ( Rf ) an artificially produced radioactive transuranium element in Group IVb of the periodic table, atomic number 104. Soviet scientists at the Joint Institute for Nuclear Research at Dubna , Russia, U.S.S.R., announced in 1964 the discovery of element 104, which they named kurchatovium , symbol Ku (for Igor Kurchatov , a Soviet nuclear physicist). In 1969, a group of American researchers at the Lawrence Radiation Laboratory of the University of California at Berkeley announced that they had identified isotopes of the element, different from the one identified by the Soviets; the Americans then proposed the name rutherfordium , in honour of the British physicist Ernest Rutherford.

3. During 1964, scientists at Dubna in Russia claimed discovery of element 104 and suggested the name Kurchatovium and symbol Ku for the element, in honour of Igor Vasilevich Kurchatov (1903-1960), the late Head of Soviet Nuclear Research

4. In 1969 an American group at Berkeley (California) in the USA reported isotopes of Element 104. Their experiments involved reaction high energy collisions between 249Cf and 12C

5. Biological role Rutherfordium has no known biological role Natural abundance Rutherfordium is a transuranium element. It is created by bombarding californium-249 with carbon-12 nuclei

6. Image explanation The abstract metallic symbol and background are inspired by imagery from early and modern particle accelerators. Appearance A radioactive metal that does not occur naturally. Relatively few atoms have ever been made. Uses At present, it is only used in research.

7. Submitted By: Ma. Elena Tobias Humss 12- A Submitted To: Mrs. Verlinda German