Group Number
Not Available
Element Family
Actinide
Alkaline Earth
Space Group Name
I4/mmm
Im_ 3m
Interesting Facts
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
- Radium metal is the heaviest metal of Alkaline earth metals column.
- Radium metal is highly radioactive and does not have any stable isotopes.
Sources
Found in Uranium Ores, Mining, Ores of metals
Mining, Ores of metals
Who Discovered
William Crookes
Not Available
Discovery
In 1900
In 1898
Abundance In Earth's Crust
Abundance In Humans
Not Available
Uses & Benefits
- Currently known uses of Protactinium metal are limited to research purpose only.
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
-
It is used in luminous paints.
Medical Uses
NA
Pharmaceutical Industry
Toxicity
Highly Toxic
Highly Toxic
Present in Human Body
No
No
Physical State
Solid
Solid
Color
Silver
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
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
Allen Electronegativity
Not Available
Pauling Electropositivity
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
Electron Configuration
[Rn] 5f2 6d1 7s2
[Rn] 7s2
Crystal Structure
Tetragonal (TETR)
Body Centered Cubic (BCC)
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100
BCC-Crystal-Structure-.jpg#100
Atomic Radius
Not Available
Valence Electron Potential
Lattice Angles
π/2, π/2, π/2
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
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Unknown
NA
Magnetic Ordering
Paramagnetic
Nonmagnetic
Electrical Property
Conductor
NA
Electrical Conductivity
Not Available
Molar Heat Capacity
Not Available
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Enthalpy of Fusion
Not Available
Enthalpy of Atomization
Not Available