Bh Bohrium
Formally known as Ns Nielsbohrium
Proposed Name
Atomic Number:
107
Atomic Symbol:
Atomic Weight: 262
Electron Configuration:
[Rn]7s²5f¹⁴6d⁵
History
In 1976 Soviet scientists at Dubna announced they had synthesized element 107
by bombarding 204Bi
with heavy nuclei of 54Cr. Reports say that
experiments in 1975 had allowed scientists "to glimpse" the
new element
for 2/1000 s. A rapidly rotating cylinder, coated with a thin layer of bismuth
metal, was
used as a target. This was bombarded by a stream of 54Cr ions
fired tangentially.
The existence of element 107 was confirmed by a team
of West German physicists at the Heavy Ion
Research Laboratory at
Darmstadt, who created and identified six nuclei of element 107.