Group Number
Not Available
Not Available
Element Family
Lanthanide
Actinide
Space Group Name
Not Available
Fm_ 3m
Space Group Number
Not Available
Interesting Facts
- Promethium metal found in Pitchblende.
- Promethium metal is highly radioactive metal.
Not Available
Sources
Found in Minerals, Mining
Obtained by Treating Radium with Neutrons, Ores of metals
Who Discovered
Chien Shiung Wu, Emilio Segrè, Hans Bethe
Friedrich Oskar Giesel
Discovery
In 1942
In 1902
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.
- Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
Other Uses
NA
Alloys, Nuclear Research, Research Purposes
Present in Human Body
No
No
Physical State
Solid
Solid
Color
Unknown
Silvery White
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
Pauling Electronegativity
Not Available
Allred Rochow Electronegativity
Pauling Electropositivity
Not Available
Electrochemical Equivalent
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Electron Configuration
[Xe] 4f5 6s2
[Rn] 6d1 7s2
Crystal Structure
Double Hexagonal Close Packed (DHCP)
Face Centered Cubic (FCC)
Crystal Lattice
DHCP-Crystal-Structure-of-Promethium.jpg#100
FCC-Crystal-Structure-of-Actinium.jpg#100
Covalent Radius
Not Available
Van der Waals Radius
Not Available
Valence Electron Potential
Lattice Constant
Not Available
Lattice Angles
Unknown
π/2, π/2, π/2
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
NA
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Unknown
Resistivity
Not Available
Electron Affinity
Not Available
Molar Heat Capacity
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Enthalpy of Fusion
Not Available
Standard Molar Entropy
Not Available