Symbol
Rf
  
Ac
  
Group Number
Not Available
  
Period Number
7
  
7
  
Block
d block
  
f block
  
Element Family
Transition Metal
  
Actinide
  
Space Group Name
Not Available
  
Fm_ 3m
  
Space Group Number
Not Available
  
Interesting Facts
- Rutherfordium does not occur in nature as it is a synthetic element.
- Till date Rutherfordium metal has 15 radioisotopes created synthetically.
  
Not Available
  
Sources
Bombarding Plutonium with Accelerated 113 to 115 MeV Neon Ions, Synthetically Produced
  
Obtained by Treating Radium with Neutrons, Ores of metals
  
History
  
  
Who Discovered
Joint Institute for Nuclear Research
  
Friedrich Oskar Giesel
  
Discovery
In 1964
  
In 1902
  
Abundance
  
  
Uses & Benefits
- Currently known uses of Rutherfordium metal are limited to research purpose only.
  
- Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
  
Industrial Uses
NA
  
NA
  
Medical Uses
NA
  
NA
  
Other Uses
Alloys, Research Purposes
  
Alloys, Nuclear Research, Research Purposes
  
Biological Properties
  
  
Toxicity
Unknown
  
Toxic
  
Present in Human Body
No
  
No
  
In Blood
0.00 Blood/mg dm-3
  
37
0.00 Blood/mg dm-3
  
37
In Bone
0.00 p.p.m.
  
36
0.00 p.p.m.
  
36
Melting Point
2,100.00 °C
  
11
1,227.00 °C
  
38
Boiling Point
3,200.00 °C
  
26
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Unknown
  
Silvery White
  
Luster
Unknown Luster
  
NA
  
Hardness
  
  
Speed of Sound
Not Available
  
Not Available
  
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Rf
  
Ac
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Allred Rochow Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
579.90 kJ/mol
  
99+
499.00 kJ/mol
  
99+
2nd Energy Level
1,389.40 kJ/mol
  
99+
1,170.00 kJ/mol
  
99+
3rd Energy Level
2,296.40 kJ/mol
  
99+
1,900.00 kJ/mol
  
99+
4th Energy Level
3,077.90 kJ/mol
  
99+
4,700.00 kJ/mol
  
23
Electrochemical Equivalent
Not Available
  
2.82 g/amp-hr
  
18
Electron Work Function
Not Available
  
Not Available
  
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
  
Ionization, Radioactive Isotopes, Radioactivity, Solubility
  
Electron Configuration
[Rn] 5f14 6d2 7s2
  
[Rn] 6d1 7s2
  
Crystal Structure
Hexagonal Close Packed (HCP)
  
Face Centered Cubic (FCC)
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
FCC-Crystal-Structure-of-Actinium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Covalent Radius
Not Available
  
Atomic Volume
Not Available
  
22.54 cm3/mol
  
11
Adjacent Atomic Numbers
  
  
Valence Electron Potential
Not Available
  
38.60 (-eV)
  
99+
Lattice Constant
Not Available
  
Lattice Angles
NA
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
10.00 g/cm3
  
37
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Poisson Ratio
Not Available
  
Not Available
  
Other Mechanical Properties
Unknown
  
NA
  
Magnetic Characteristics
  
  
Specific Gravity
Not Available
  
Magnetic Ordering
Unknown
  
Paramagnetic
  
Electrical Properties
  
  
Specific Heat
Not Available
  
0.12 J/(kg K)
  
40
Molar Heat Capacity
Not Available
  
27.20 J/mol·K
  
18
Thermal Conductivity
Not Available
  
12.00 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
Not Available
  
Not Available
  
Enthalpy
  
  
Enthalpy of Atomization
Not Available
  
301.00 kJ/mol
  
36
Standard Molar Entropy
Not Available
  
56.50 J/mol.K
  
25