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TechnoratiNew doubt!!!!Element: Is it Bohrium(Bh) or Neilsbohrium(Ns)
Submitted by Anonymous on 8 June 2005 - 11:19am.
:cry: :cry: :x :? :? :? :? :? I'm crying of confusion!!!!!
As we all know that element with the atomic No.107 was named after Neils Bohr,a famous chemist who proved the movements of electron in the orbit.But an enigma rises when THIS particular element was named Bohrium with the symbol Bh in some periodic table.While at the same time was also called Neilsbohrium with the respective symbol Ns.Now which is the aproppriate symbol and name when refering to this element. :wink: :wink: :D :D
Happily waiting for your comments/answers. :o :o :( :) :D
IUPAC make these decisions,
usually at very expensive conferences hosted in the Bahamas.
In the version of the periodic table that i memorosedfor my exam ~(the forst 109 elements), I always wrote element 107 ad Bh.
But only becuase that is what it is called on my GlaxoSmithKline Mouse mat.
And considering (I think) GSK have changed their name *again* that mouse mat may well be out of date.
So I haven't a clue which it is.
Thankfully I only needed to knwo the posistions of the transition elements and N and P for my exam, so a waste of time my mnemonic for the f-block was :cry:
After its usual unwelcome intrusions and false clues the IUPAC finally referred the matter to the Danish committee which expressed its approval of Bohrium Bh; much useful information can be garnered about element names at elementymology
http://www.vanderkrogt.net/elements/index.html
Damn! those Vikings have beaten us all again!
PS - there are probably only about 20 atoms of Bohrium in the whole world ;-)
Given the vanishingly short half-life, I doubt that as many as 20 remain today.
Bohrium, Bh
The official name of element 107 is bohrium, symbol Bh. The reason why certain periodic tables have "Nielsbohrium, Ns" and others have "Bohrium, Bh" is because of a dispute between the IUPAC and the American Chemical Society. IUPAC had bohrium and ACS had nielsbohrium. However, IUPAC rules state that an element's name, when named after a person, cannot include that person's full name.
When elements 104-109 were named circa 1994, there were many disputes over their names. For example, the name of one element may have been the current name of a different element.
The head of the discovery team at Darmstadt, Gottfried Muenzenberg dubbed 107 Nielsbohrium; while the ACS acceded to the discoverers' choice, it had nothing to do with naming 107; IUPAC with its usual self-serving interference muddied the waters and finally referred the matter to the Danish committee for their preference, which was for bohrium; charts that still list nielsbohrium are simply obsolete like those that identify 43 as masurium or 3 as glucinum.
It was originally named under Niels Bohr solely, but later turned out to be named under Niels Bohr AND HIS SON collectively. Therefore only the surname Bohr is taken.
Niels Bohr had six sons and no one would have been crass enough to honor just one of them and leave Aage (the physicist) or Erik (the chemical engineer) or the other four unmentioned; the choice of nielsbohrium was clearly in the words of the discoverers: Nielsbohrium, nach dem Vater des Atommodells [nielsbohrium after the father of the atomic model]; since none of Bohr's six sons made any similar contributions to nucelar physics that idea is completely false. IUPAC in fact was concerned because no other element carried both the first and famly name of its discoverer and the Danish subcommittee felt equal unease at nielsbohrium recommending bohrium, a form which some objected to because of the similarlity to borium (a form used for boron in some countries).
Oddly ACS didn't seem to mind. :wink: