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Rutherfordium


Periodic Table
Symbol
Rf
Group Number
4 14
Period Number
7 1
Block
d block
Element Family
Transition Metal
CAS Number
53850365 13
Space Group Name
-
Space Group Number
166.00 9
Facts
Interesting Facts
  • Rutherfordium does not occur in nature as it is a synthetic element.
  • Till date Rutherfordium metal has 15 radioisotopes created synthetically.
Sources
Bombarding Plutonium with Accelerated 113 to 115 MeV Neon Ions, Synthetically Produced
History
Who Discovered
Joint Institute for Nuclear Research
Discovery
In 1964
Abundance
Abundance In Universe
0.00 % 40
Abundance In Sun
-
Abundance In Meteorites
-
Abundance In Earth's Crust
-
Abundance In Oceans
-
Abundance In Humans
-
Uses
Uses & Benefits
  • Currently known uses of Rutherfordium metal are limited to research purpose only.
Industrial Uses
-
Medical Uses
-
Other Uses
Alloys, Research Purposes
Biological Properties
Toxicity
-
Present in Human Body
No
In Blood
0.00 Blood/mg dm-3 40
In Bone
0.00 p.p.m. 41
Physical
Melting Point
2,100.00 °C 11
Boiling Point
5,500.00 °C 3
Appearance
Physical State
Solid
Color
-
Luster
Unknown Luster
Hardness
Mohs Hardness
-
Brinell Hardness
1,300.00 MPa 9
Vickers Hardness
550.00 MPa 31
Speed of Sound
6,100.00 m/s 5
Optical Properties
Refractive Index
1.30 43
Reflectivity
65.00 % 18
Allotropes
No
α Allotropes
-
β Allotropes
-
γ Allotropes
-
Chemical
Chemical Formula
Rf
Isotopes
Known Isotopes
13 26
Electronegativity
Pauling Electronegativity
0.00 55
Sanderson Electronegativity
1.90 13
Allred Rochow Electronegativity
1.30 25
Mulliken-Jaffe Electronegativity
1.30 33
Allen Electronegativity
0.90 59
Electropositivity
Pauling Electropositivity
2.20 39
Ionization Energies
1st Energy Level
579.90 kJ/mol 63
2nd Energy Level
1,389.40 kJ/mol 50
3rd Energy Level
2,296.40 kJ/mol 57
4th Energy Level
3,077.90 kJ/mol 75
5th Energy Level
5,790.00 kJ/mol 55
6th Energy Level
11,600.00 kJ/mol 7
7th Energy level
5,800.00 kJ/mol 60
8th Energy Level
5,800.00 kJ/mol 58
9th Energy Level
5,800.00 kJ/mol 56
10th Energy Level
5,800.00 kJ/mol 58
11th Energy Level
5,800.00 kJ/mol 63
12th Energy Level
5,800.00 kJ/mol 65
13th Energy Level
5,800.00 kJ/mol 52
14th Energy Level
5,800.00 kJ/mol 41
15th Energy Level
58,000.00 kJ/mol 53
16th Energy Level
58,000.00 kJ/mol 42
17th Energy Level
579.90 kJ/mol 65
18th Energy Level
3,300.00 kJ/mol 83
19th Energy Level
579.90 kJ/mol 63
20th Energy Level
580.00 kJ/mol 58
21st Energy Level
5,800.00 kJ/mol 21
22nd Energy Level
579.00 kJ/mol 54
23rd Energy Level
5,800.00 kJ/mol 21
24th Energy Level
579.10 kJ/mol 55
25th Energy Level
0.00 kJ/mol 81
26th Energy Level
580.00 kJ/mol 60
27th Energy Level
580.00 kJ/mol 58
28th Energy Level
840.00 kJ/mol 14
29th Energy Level
580.60 kJ/mol 63
30th Energy Level
0.00 kJ/mol 84
Electrochemical Equivalent
3.00 g/amp-hr 21
Electron Work Function
6.00 eV 1
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Atomic
Atomic Number
104 14
Electron Configuration
[Rn] 5f14 6d2 7s2
Crystal Structure
Hexagonal Close Packed (HCP)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
Atom
Number of Protons
104 14
Number of Neutrons
157 8
Number of Electrons
104 14
Radius of an Atom
Atomic Radius
150.00 pm 35
Covalent Radius
157.00 pm 33
Van der Waals Radius
250.00 pm 10
Atomic Weight
267.00 amu 11
Atomic Volume
23.20 cm3/mol 15
Adjacent Atomic Numbers
Previous Element
82
Next Element
70
Valence Electron Potential
6.00 (-eV) 75
Lattice Constant
-
Lattice Angles
-
Lattice C/A Ratio
1.60 22
Mechanical
Density
Density At Room Temperature
23.20 g/cm3 8
Density When Liquid (at m.p.)
23.20 g/cm3 9
Tensile Strength
23.00 MPa 45
Viscosity
0.00 25
Vapor Pressure
Vapor Pressure at 1000 K
0.00 (Pa) 37
Vapor Pressure at 2000 K
0.00 (Pa) 45
Elasticity properties
Shear Modulus
23.00 GPa 41
Bulk Modulus
0.00 GPa 67
Young's Modulus
12.80 GPa 57
Poisson Ratio
0.30 14
Other Mechanical Properties
-
Magnetic
Magnetic Characteristics
Specific Gravity
23.00 10
Magnetic Ordering
-
Permeability
0.00 H/m 10
Susceptibility
0.00 24
Electrical Properties
Electrical Property
-
Resistivity
0.29 nΩ·m 86
Electrical Conductivity
0.00 106/cm Ω 70
Electron Affinity
50.00 kJ/mol 26
Thermal
Specific Heat
0.27 J/(kg K) 19
Molar Heat Capacity
23.20 J/mol·K 66
Thermal Conductivity
0.23 W/m·K 76
Critical Temperature
2,400.00 K 12
Thermal Expansion
23.20 µm/(m·K) 17
Enthalpy
Enthalpy of Vaporization
580.00 kJ/mol 12
Enthalpy of Fusion
-
Enthalpy of Atomization
580.00 kJ/mol 14
Standard Molar Entropy
57.60 J/mol.K 28
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