Group Number
Not Available
Not Available
Element Family
Actinide
Actinide
Space Group Name
I4/mmm
P63/mmc
Interesting Facts
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
- X-ray Diffraction- different compounds of Berkelium metals are identified using it.
Commercial uses of Berkelium metal are not yet discovered.
Sources
Found in Uranium Ores, Mining, Ores of metals
Bombarding Americium with Alpha Particles.
Who Discovered
William Crookes
Lawrence Berkeley National Laboratory
Discovery
In 1900
In 1949
Abundance In Earth's Crust
Not Available
Abundance In Oceans
Not Available
Uses & Benefits
- Currently known uses of Protactinium metal are limited to research purpose only.
- This metal is very rare and has no commercial uses.
Toxicity
Highly Toxic
Unknown
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
Electron Configuration
[Rn] 5f2 6d1 7s2
[Rn] 5f9 7s2
Crystal Structure
Tetragonal (TETR)
Double Hexagonal Close Packed (DHCP)
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100
DHCP-Crystal-Structure-of-Berkelium.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, π/2
π/2, π/2, 2 π/3
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
Unknown
NA
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Conductor
Resistivity
Not Available
Electrical Conductivity
Not Available
Specific Heat
Not Available
Molar Heat Capacity
Not Available
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Enthalpy of Fusion
Not Available
Standard Molar Entropy
Not Available