Group Number
Not Available
Not Available
Element Family
Actinide
Actinide
Space Group Name
I4/mmm
Not Available
Space Group Number
Not Available
Interesting Facts
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
- Curium metal does not occur free in nature.
- Curium metal is a synthetically produced metal.
Sources
Found in Uranium Ores, Mining, Ores of metals
Bombarding Plutonium with Helium Ions
Who Discovered
William Crookes
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso
Discovery
In 1900
In 1944
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.
- Curium metal is used to provide power to electrical equipment for space missions.
Other Uses
NA
Research Purposes
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
Pauling Electropositivity
Electrochemical Equivalent
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes
Electron Configuration
[Rn] 5f2 6d1 7s2
[Rn] 5f7 6d1 7s2
Crystal Structure
Tetragonal (TETR)
Double Hexagonal Close Packed (DHCP)
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100
DHCP-Crystal-Structure-of-Curium.jpg#100
Valence Electron Potential
Lattice Constant
Not Available
Lattice Angles
π/2, π/2, π/2
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
Unknown
Unknown
Magnetic Ordering
Paramagnetic
Antiferromagnetic
Electrical Property
Conductor
Unknown
Electrical Conductivity
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
Standard Molar Entropy
Not Available