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Bh - Bohrium

Bohrium

 Bohrium 
Bh
Atomic Number: 107
Atomic Weight: -262.0
Element Type: Transition Metal
Crystal Structure:
Melting Point: °C = °F = K
Boiling Point: °C = °F = K
Critical Temp: °C = °F = K
Atomic Radius: Å (Å = Angstrom = 10-10 m)
Covalent Radius: Å
Electronegativity:

History

In 1976 Soviet scientists at Dubna announced they had synthesized element 107 bybombarding 204Bi with heavy nuclei of 54Cr. Reports say that experiments in 1975 hadallowed scientists "to glimpse" the new element for 2/1000 s. A rapidly rotatingcylinder, coated with a thin layer of bismuth metal, was used as a target. This wasbombarded by a stream of 54Cr ions fired tangentially.

The existence of element 107 was confirmed by a team of West German physicists at theHeavy Ion Research Laboratory at Darmstadt, who created and identified six nuclei ofelement 107.


Sources


Science Quote

'The strength and weakness of physicists is that we believe in what we can measure. And if we can't measure it, then we say it probably doesn't exist. And that closes us off to an enormous amount of phenomena that we may not be able to measure because they only happened once. For example, the Big Bang. ... That's one reason why they scoffed at higher dimensions for so many years. Now we realize that there's no alternative... '

Michio Kaku
(1947-)


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