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Dubnium Rutherfordium Comparison


Rutherfordium Dubnium comparison


Periodic Table

Symbol
Db   
Rf   

Group Number
5   
13
4   
14

Period Number
7   
7   

Block
d block   
d block   

Element Family
Transition Metal   
Transition Metal   

CAS Number
53850354   
14
53850365   
13

Space Group Name
Not Available   
Not Available   

Space Group Number
Not Available   
Not Available   

Facts

Interesting Facts
  • IUPAC allotted a temporary name to Dubnium metal as “ Unnilpentium”.
  • In the production of Dubnium, thermal gradient chromatography is used.
  
  • Rutherfordium does not occur in nature as it is a synthetic element.
  • Till date Rutherfordium metal has 15 radioisotopes created synthetically.
  

Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced   
Bombarding Plutonium with Accelerated 113 to 115 MeV Neon Ions, Synthetically Produced   

History
  
  

Who Discovered
Joint Institute for Nuclear Research   
Joint Institute for Nuclear Research   

Discovery
In 1968   
In 1964   

Abundance
  
  

Uses

Uses & Benefits
  • Currently known uses of Dubnium metal are limited to research purpose only.
  
  • Currently known uses of Rutherfordium metal are limited to research purpose only.
  

Industrial Uses
NA   
NA   

Medical Uses
NA   
NA   

Other Uses
Research Purposes   
Alloys, Research Purposes   

Biological Properties
  
  

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

Physical Properties

Melting Point
Not Available   
2,100.00 °C   
11

Boiling Point
Not Available   
5,500.00 °C   
3

Appearance
  
  

Physical State
Solid   
Solid   

Luster
Unknown Luster   
Unknown Luster   

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 Properties

Chemical Formula
Db   
Rf   

Isotopes
  
  

Known Isotopes
10   
28
13   
26

Electronegativity
  
  

Electropositivity
  
  

Ionization Energies
  
  

1st Energy Level
664.80 kJ/mol   
38
579.90 kJ/mol   
99+

2nd Energy Level
1,546.70 kJ/mol   
38
1,389.40 kJ/mol   
99+

3rd Energy Level
2,378.40 kJ/mol   
99+
2,296.40 kJ/mol   
99+

4th Energy Level
3,298.80 kJ/mol   
99+
3,077.90 kJ/mol   
99+

5th Energy Level
4,305.20 kJ/mol   
39
Not Available   

Electrochemical Equivalent
Not Available   
Not Available   

Electron Work Function
Not Available   
Not Available   

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Radioactivity   

Atomic Properties

Atomic Number
105   
13
104   
14

Electron Configuration
[Rn] 5f14 6d3 7s2   
[Rn] 5f14 6d2 7s2   

Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
105   
13
104   
14

Number of Neutrons
157   
7
157   
7

Number of Electrons
105   
13
104   
14

Radius of an Atom
  
  

Atomic Radius
139.00 pm   
39
150.00 pm   
33

Covalent Radius
149.00 pm   
35
157.00 pm   
31

Atomic Weight
268.00 amu   
10
267.00 amu   
11

Atomic Volume
Not Available   
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Lawrencium
  

Next Element
Seaborgium
  
Dubnium
  

Valence Electron Potential
Not Available   
Not Available   

Lattice Constant
Not Available   
Not Available   

Lattice Angles
NA   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
29.30 g/cm3   
5
23.20 g/cm3   
8

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   
Unknown   

Magnetic Properties

Magnetic Characteristics
  
  

Electrical Properties
  
  

Thermal Properties

Specific Heat
Not Available   
Not Available   

Molar Heat Capacity
Not Available   
Not Available   

Thermal Conductivity
Not Available   
Not Available   

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
Not Available   

Enthalpy
  
  

Standard Molar Entropy
Not Available   
Not Available   

Summary >>
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