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.
- Americium metal is produced by bombarding Plutonium with Neutrons.
- Americium metal was discovered as a by-product while testing an atomic bomb (Manhattan Project).
Sources
Found in Uranium Ores, Mining, Ores of metals
Obtained By Bombarding Plutonium with Neutrons
Who Discovered
William Crookes
Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, 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.
- Americium metal is used in smoke detection alarms.
-
In the future, this metal has a potential to be used in batteries of spacecrafts.
Other Uses
NA
Alloys, Nuclear Research, Research Purposes
Toxicity
Highly Toxic
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
Pauling Electropositivity
Electrochemical Equivalent
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Electron Configuration
[Rn] 5f2 6d1 7s2
[Rn] 5f7 7s2
Crystal Structure
Tetragonal (TETR)
Double Hexagonal Close Packed (DHCP)
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100
DHCP-Crystal-Structure-of-Americium.jpg#100
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
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure at 1000 K
Not Available
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Unknown
NA
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Conductor
Unknown
Molar Heat Capacity
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Enthalpy of Atomization
Not Available
Standard Molar Entropy
Not Available