Group Number
Not Available
Not Available
Element Family
Actinide
Actinide
Space Group Name
P63/mmc
Pnma
Interesting Facts
- X-ray Diffraction- different compounds of Berkelium metals are identified using it.
Commercial uses of Berkelium metal are not yet discovered.
Not Available
Sources
Bombarding Americium with Alpha Particles.
Made by Bombarding Uranium with Neutrons, Ores of metals
Who Discovered
Lawrence Berkeley National Laboratory
Edwin McMillan and Philip H. Abelson
Discovery
In 1949
In 1940
Uses & Benefits
- This metal is very rare and has no commercial uses.
- Currently known uses of Neptunium metal are limited to research purpose only.
-
Neptunium’s isotope neptunium-237 is used as a neutron detectors.
Other Uses
NA
Alloys, Nuclear Research, Research Purposes
Present in Human Body
No
No
Physical State
Solid
Solid
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
Allred Rochow Electronegativity
Allen Electronegativity
Not Available
Pauling Electropositivity
Electrochemical Equivalent
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Electron Configuration
[Rn] 5f9 7s2
[Rn] 5f4 6d1 7s2
Crystal Structure
Double Hexagonal Close Packed (DHCP)
Orthorhombic (ORTH)
Crystal Lattice
DHCP-Crystal-Structure-of-Berkelium.jpg#100
ORTH-Crystal-Structure-of-Neptunium.jpg#100
Covalent Radius
Not Available
Van der Waals Radius
Not Available
Atomic Volume
Not Available
Valence Electron Potential
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Density At Room Temperature
Density When Liquid (at m.p.)
Not Available
Tensile Strength
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure at 2000 K
Not Available
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
NA
Ductile
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Conductor
Resistivity
Not Available
Electrical Conductivity
Not Available
Specific Heat
Not Available
Molar Heat Capacity
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Not Available
Enthalpy of Fusion
Not Available
Standard Molar Entropy
Not Available
Not Available