Group Number
Not Available
Element Family
Lanthanide
Transition Metal
Space Group Name
Not Available
Not Available
Space Group Number
Not Available
Not Available
Interesting Facts
- Promethium metal found in Pitchblende.
- Promethium metal is highly radioactive metal.
- Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
Sources
Found in Minerals, Mining
Found in Minerals, Mining, Synthetically Produced
Who Discovered
Chien Shiung Wu, Emilio Segrè, Hans Bethe
Gesellschaft für Schwerionenforschung
Discovery
In 1942
In 1981
Uses & Benefits
- It is used for research purpose. Very small amount of this metal is used in atomic batteries.
- Its radioactive decay is used for a phosphor to give off light. The light emitted is converted into electricity.
- Currently known uses of Bohrium metal are limited to research purpose only.
Other Uses
NA
Research Purposes
Toxicity
Non Toxic
Unknown
Present in Human Body
No
No
Melting Point
Not Available
Boiling Point
Not Available
Physical State
Solid
Solid
Luster
Metallic
Unknown Luster
Speed of Sound
Not Available
Not Available
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Allred Rochow Electronegativity
Not Available
5th Energy Level
Not Available
6th Energy Level
Not Available
7th Energy level
Not Available
Electrochemical Equivalent
Not Available
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes
Electron Configuration
[Xe] 4f5 6s2
[Rn] 5f14 6d5 7s2
Crystal Structure
Double Hexagonal Close Packed (DHCP)
Hexagonal Close Packed (HCP)
Crystal Lattice
DHCP-Crystal-Structure-of-Promethium.jpg#100
BCC-Crystal-Structure-.jpg#100
Van der Waals Radius
Not Available
Atomic Volume
Not Available
Valence Electron Potential
Not Available
Lattice Constant
Not Available
Not Available
Lattice Angles
Unknown
NA
Lattice C/A Ratio
Not Available
Not Available
Density At Room Temperature
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Shear Modulus
Not Available
Bulk Modulus
Not Available
Young's Modulus
Not Available
Poisson Ratio
Not Available
Other Mechanical Properties
NA
Unknown
Specific Gravity
Not Available
Magnetic Ordering
Paramagnetic
Unknown
Electrical Property
Conductor
Unknown
Resistivity
Not Available
Electron Affinity
Not Available
Specific Heat
Not Available
Molar Heat Capacity
Not Available
Not Available
Thermal Conductivity
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Enthalpy of Fusion
Not Available
Enthalpy of Atomization
Not Available
Standard Molar Entropy
Not Available
Not Available