Dubnium

Data:
            Symbol=Db    Atomic Mass=(262.0)amu    Atomic Number=105

In a typical atom there are:
105 Protons
157 Neutrons
105 Electrons
 

Description:

      Dubnium is an element found in group 5 and period 7 on the Periodic
Table of Chemical Elements. Dubnium has 3 other names: Unnilpentium(Unp), Joliotium(JL), Hahnium(Ha). Dubnium is an artificial and synthetic element. It is also a solid metal. Dubnium has no specific shape or color. Although scientists believe that Dubnium is probably a metallic, silvery white, or grayish color.
      Dubnium is a man made element and so it has no use of any kind and cannot be found anywhere in our environment today.
      Dubnium has a very interesting history. In 1970 Dubnium was found by Albert Ghiorso. Although in the World Book Millennium 2000 encyclopedia they claim that scientists at Joint Institute for Nuclear Research discovered Dubnium. The scientist also claim that they produced the element. Dubnium was discovered in Dubna, Russia or Dubna,USSR. Although in an encyclopedia that I found state that Dubnium was also found in the Univ. of California at Berkeley by Albert Ghiorso.  Dubnium got its name from Dubna, a Russian City, where the Joint Institute for Nuclear Research is located at. This is the interesting history of Dubnium.
 


Bibliography:
1) Richard L. Hahn,"Dubnium". World Book Millennium 2000.2000 ed
2) Barbalace,Kenneth. Environmental Chemistry.com:Periodic table of elements(Db) 11 Sept. 2001. 12 Sept. 2001
http://www.environmentalchemistry.com/yogi/periodic/db.html
3) Bentor, Yinon. Chemical Element.com - Dubnium. 18 Sept. 2001 18 Sept. 2001
http://www.chemicalelements.com/elements/db.html