Bohrium
107
Bh
Group
7
Period
7
Block
d
Protons
Electrons
Neutrons
107
107
157
General Properties
Atomic Number
107
Atomic Weight
[270]
Mass Number
264
Category
Transition metals
Color
n/a
Radioactive
Yes
Named after Niels Bohr, the Danish physicist
Crystal Structure
n/a
History
Bohrium was first convincingly synthesized in 1981 by a German research team led by Peter Armbruster and Gottfried Münzenberg at the Institute for Heavy Ion Research (Gesellschaft für Schwerionenforschung) in Darmstadt.
The team bombarded a target of bismuth-209 with accelerated nuclei of chromium-54 to produce 5 atoms of the isotope bohrium-262.
The team bombarded a target of bismuth-209 with accelerated nuclei of chromium-54 to produce 5 atoms of the isotope bohrium-262.
Electrons per shell
2, 8, 18, 32, 32, 13, 2
Electron Configuration
[Rn] 5f14 6d5 7s2
The only confirmed example of isomerism in bohrium is in the isotope 262Bh
Physical Properties
Phase
Solid
Density
37 g/cm3
Melting Point
-
Boiling Point
-
Heat of Fusion
n/a
Heat of Vaporization
n/a
Specific Heat Capacity
-
Abundance in Earth's crust
n/a
Abundance in Universe
n/a
CAS Number
54037-14-8
PubChem CID Number
n/a
Atomic Properties
Atomic Radius
-
Covalent Radius
141 pm
Electronegativity
-
Ionization Potential
-
Atomic Volume
-
Thermal Conductivity
-
Oxidation States
7
Applications
Bohrium is used for scientific research purposes only.
Bohrium is harmful due to its radioactivity
Isotopes
Stable Isotopes
-Unstable Isotopes
260Bh, 261Bh, 262Bh, 263Bh, 264Bh, 265Bh, 266Bh, 267Bh, 268Bh, 269Bh, 270Bh, 271Bh, 272Bh, 273Bh, 274Bh, 275Bh