Roentgenium Actinium Comparison
Group Number
Not Available
Element Family
Unknown
Actinide
Space Group Name
Not Available
Fm_ 3m
Interesting Facts
Not Available
Not Available
Sources
Synthetically Produced
Obtained by Treating Radium with Neutrons, Ores of metals
Who Discovered
Gesellschaft für Schwerionenforschung
Friedrich Oskar Giesel
Discovery
In 1994
In 1902
Uses & Benefits
- Currently known uses of Roentgenium metal are limited to research purpose only.
- Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
Other Uses
Research Purposes
Alloys, Nuclear Research, Research Purposes
Present in Human Body
No
No
Melting Point
Not Available
Boiling Point
Not Available
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
Not Available
Allred Rochow Electronegativity
Not Available
Pauling Electropositivity
Not Available
5th Energy Level
Not Available
Electrochemical Equivalent
Not Available
Electron Work Function
Not Available
Not Available
Other Chemical Properties
NA
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Electron Configuration
[Rn] 5f14 6d9 7s2
[Rn] 6d1 7s2
Crystal Structure
Body Centered Cubic (BCC)
Face Centered Cubic (FCC)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
FCC-Crystal-Structure-of-Actinium.jpg#100
Atomic Radius
Not Available
Atomic Volume
Not Available
Valence Electron Potential
Not Available
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
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Unknown
NA
Specific Gravity
Not Available
Magnetic Ordering
Unknown
Paramagnetic
Specific Heat
Not Available
Molar Heat Capacity
Not Available
Thermal Conductivity
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Not Available
Enthalpy of Atomization
Not Available
Standard Molar Entropy
Not Available