Group Number
Not Available
Not Available
Element Family
Actinide
Actinide
Space Group Name
Not Available
I4/mmm
Space Group Number
Not Available
Interesting Facts
- The most stable isotope of Nobelium metal is No-259.
- No-259 has a half-life of fifty-eight minutes.
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
Sources
Bombarding Curium-246 or Curium-249 with Carbon-12 Nuclei, Found in Minerals, Mining
Found in Uranium Ores, Mining, Ores of metals
Who Discovered
Joint Institute for Nuclear Research
William Crookes
Discovery
In 1966
In 1900
Abundance In Earth's Crust
Not Available
Abundance In Oceans
Not Available
Uses & Benefits
- Currently known uses of Nobelium metal are limited to research purpose only.
- Currently known uses of Protactinium metal are limited to research purpose only.
Other Uses
Research Purposes
NA
Toxicity
Unknown
Highly Toxic
Present in Human Body
No
No
Boiling Point
Not Available
Physical State
Solid
Solid
Luster
Unknown Luster
Metallic
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
Electron Configuration
[Rn] 5f14 7s2
[Rn] 5f2 6d1 7s2
Crystal Structure
Not Known
Tetragonal (TETR)
Crystal Lattice
Unknown-Crystal-Structure-of-Nobelium.jpg#100
TETR-Crystal-Structure-of-Protactinium.jpg#100
Atomic Radius
Not Available
Covalent Radius
Not Available
Atomic Volume
Not Available
Valence Electron Potential
Lattice Constant
Not Available
Lattice Angles
NA
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Density At Room Temperature
Not Available
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Unknown
Unknown
Specific Gravity
Not Available
Magnetic Ordering
Unknown
Paramagnetic
Electrical Property
Unknown
Conductor
Resistivity
Not Available
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
Enthalpy of Fusion
Not Available
Standard Molar Entropy
Not Available