Group Number
Not Available
Element Family
Alkaline Earth
Actinide
Space Group Name
Im_ 3m
I4/mmm
Interesting Facts
- Radium metal is the heaviest metal of Alkaline earth metals column.
- Radium metal is highly radioactive and does not have any stable isotopes.
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
Sources
Mining, Ores of metals
Found in Uranium Ores, Mining, Ores of metals
Who Discovered
Not Available
William Crookes
Discovery
In 1898
In 1900
Abundance In Earth's Crust
Abundance In Humans
Not Available
Uses & Benefits
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
-
It is used in luminous paints.
- Currently known uses of Protactinium metal are limited to research purpose only.
Medical Uses
Pharmaceutical Industry
NA
Toxicity
Highly Toxic
Highly Toxic
Present in Human Body
No
No
Physical State
Solid
Solid
Color
Silvery White
Silver
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] 7s2
[Rn] 5f2 6d1 7s2
Crystal Structure
Body Centered Cubic (BCC)
Tetragonal (TETR)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
TETR-Crystal-Structure-of-Protactinium.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
NA
Unknown
Magnetic Ordering
Nonmagnetic
Paramagnetic
Electrical Property
NA
Conductor
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