Ununquadium

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Ununquadium is a chemical element. It is also named eka-lead. It has the symbol Uuq. It has the atomic number 114. It is a superheavy element. Ununquadium is radioactive

Ununquadium does not exist in nature. It has to be made. It is a synthetic element. It is made from a nuclear reaction between plutonium and calcium. The reaction that happens is a fusion reaction.

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[edit] History

The discovery of ununquadium in December 1998 was reported in January 1999 by scientists at the Joint Institute for Nuclear Research in Dubna, Russia.[1] The same team of scientists made another isotope of Uuq three months later[2] and made it again in in 2004 and 2006.

In 2004 in the Joint Institute for Nuclear Research checked it was made by another method. They found the final products of radioactive decay.

[edit] Name

Ununquadium is a temporary IUPAC systematic element name. It is likely to get a new name and symbol in the future.

[edit] Chemical properties

Not enough ununpentium has beeen made to measure its physical or chemical properties. It is thought that it would be a soft, dense metal that changes colour in air. It may have a low melting point of about 200 °C.

[edit] Making it

Ununquadium can be made by bombarding a plutonium-244 target with calcium-48 as a beam of ions.

[edit] References

  1. Oganessian, Yu. Ts., et al. (October 1999). "Synthesis of Superheavy Nuclei in the 48Ca + 244Pu Reaction". Physical Review Letters 83: 3154. DOI:10.1103/PhysRevLett.83.3154.
  2. Oganessian, et al. (July 1999). "Synthesis of nuclei of the superheavy element 114 in reactions induced by 48Ca". Nature 400: 242. DOI:10.1038/22281.

[edit] External links

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