Bohrium

Images

Animated Bohrium

History

Formally known as Ns, Nielsbohrium

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.

General Info

AtomicNumber
107
Symbol
Bh
Name
Bohrium

Atomic Info

Appearance
AtomicWeight
[272]
Color
E00038
ElectronicConfiguration
[Rn].5f14.6d5.7s2
ElectronegativityInPauling
AtomicRadiusInPM
IonRadiusInPM
VanDerWaalsRadiusInPM
IEinKJmol
EAinKJmol
OxidationStates
StandardState
BondingType
MeltingPoint
0
BoilingPoint
0
Density
0
State
Transition metal
DiscoveredYear
1976