Group Number
Not Available
Element Family
Actinide
Alkali
Space Group Name
P63/mmc
Not Available
Space Group Number
Not Available
Interesting Facts
- X-ray Diffraction- different compounds of Berkelium metals are identified using it.
Commercial uses of Berkelium metal are not yet discovered.
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
Sources
Bombarding Americium with Alpha Particles.
Formed by Decay Process, Mining
Who Discovered
Lawrence Berkeley National Laboratory
Marguerite Perey
Discovery
In 1949
In 1939
Uses & Benefits
- This metal is very rare and has no commercial uses.
- Francium has no known uses as it has a half life of only 22 minutes.
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
Mulliken-Jaffe Electronegativity
Not Available
Pauling Electropositivity
2nd Energy Level
Not Available
3rd Energy Level
Not Available
4th Energy Level
Not Available
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] 7s1
Crystal Structure
Double Hexagonal Close Packed (DHCP)
Body Centered Cubic (BCC)
Crystal Lattice
DHCP-Crystal-Structure-of-Berkelium.jpg#100
BCC-Crystal-Structure-.jpg#100
Atomic Radius
Not Available
Covalent Radius
Not Available
Van der Waals Radius
Not Available
Atomic Volume
Not Available
Not Available
Valence Electron Potential
Lattice Constant
Not Available
Lattice Angles
π/2, π/2, 2 π/3
NA
Lattice C/A Ratio
Not Available
Not Available
Density At Room Temperature
Density When Liquid (at m.p.)
Not Available
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
NA
NA
Specific Gravity
Not Available
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Poor Conductor
Resistivity
Not Available
Electrical Conductivity
Not Available
Specific Heat
Not Available
Not Available
Molar Heat Capacity
Not Available
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Not Available
Enthalpy of Atomization
Not Available
Standard Molar Entropy
Not Available
Not Available