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** 105 dubnium Db
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** 105. dubnium, Db, an element that is named after the city of Dubna, where the JINR is located.
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105 and dubnium
The Soviet scientists had suggested this name be given to element 105 ( which was finally called dubnium ) and the German team wished to recognise both Bohr and the fact that the Dubna team had been the first to propose the cold fusion reaction.
The name dubnium was given to element 105 at the same time.
| Ha || Hahnium || 105 || Proposed name for dubnium.
| Jo || Joliotium || 105 || Proposed name for dubnium.
| Ns || Nielsbohrium || 105 || Proposed name for dubnium.
| Unp || Unnilpentium || 105 || Temporary name given to dubnium until it was permanently named by IUPAC.
That machine was used in the discovery of elements 102-106 ( 102, nobelium ; 103, lawrencium ; 104, rutherfordium ; 105, dubnium and 106, seaborgium ), each produced and identified on the basis of only a few atoms.
His original name for element 105 ( hahnium ) was changed by the International Union of Pure and Applied Chemistry ( IUPAC ) to dubnium, to recognize the contributions of the laboratory at Dubna, Russia, in the search for trans-fermium elements.
105 and Db
Dubnium ( ), is a chemical element with the symbol Db and atomic number 105, named after the town of Dubna in Russia, where it was first produced.
In recognition of that, in 1997 the chemical element 105 Dubnium ( Db ) was named after the town.
* 105 Dubnium, Db
dubnium and Db
The assignment of the dubnium activity was later changed to < sup > 258 </ sup > Db, presuming that the decay of bohrium was missed.
However, in 1997 they resolved the dispute and adopted the current name, dubnium ( Db ), after the Russian town of Dubna, the location of the Joint Institute for Nuclear Research.
In an extrapolation of the chemistries from niobium and tantalum, dubnium should react with oxygen to form an inert pentoxide, Db < sub > 2 </ sub > O < sub > 5 </ sub >.
In experiments in June 2004 and December 2005, the dubnium isotope was successfully identified by milking the Db fraction and measuring any SF activities.
In the modern IUPAC nomenclature, Group 5 of the periodic table contains vanadium ( V ), niobium ( Nb ), tantalum ( Ta ) and dubnium ( Db ).
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