Group Number
Not Available
Not Available
Element Family
Actinide
Actinide
Space Group Name
Pnma
I4/mmm
Interesting Facts
Not Available
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
Sources
Made by Bombarding Uranium with Neutrons, Ores of metals
Found in Uranium Ores, Mining, Ores of metals
Who Discovered
Edwin McMillan and Philip H. Abelson
William Crookes
Discovery
In 1940
In 1900
Abundance In Earth's Crust
Not Available
Abundance In Oceans
Not Available
Uses & Benefits
- Currently known uses of Neptunium metal are limited to research purpose only.
-
Neptunium’s isotope neptunium-237 is used as a neutron detectors.
- Currently known uses of Protactinium metal are limited to research purpose only.
Other Uses
Alloys, Nuclear Research, Research Purposes
NA
Toxicity
Toxic
Highly Toxic
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, Solubility
Ionization, Radioactive Isotopes, Radioactivity
Electron Configuration
[Rn] 5f4 6d1 7s2
[Rn] 5f2 6d1 7s2
Crystal Structure
Orthorhombic (ORTH)
Tetragonal (TETR)
Crystal Lattice
ORTH-Crystal-Structure-of-Neptunium.jpg#100
TETR-Crystal-Structure-of-Protactinium.jpg#100
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
Viscosity
Not Available
Not Available
Vapor Pressure at 2000 K
Not Available
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Ductile
Unknown
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Conductor
Molar Heat Capacity
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Standard Molar Entropy
Not Available