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Dubnium vs Lawrencium

Dubnium
Lawrencium
Lawrencium vs Dubnium


Periodic Table
Symbol
Db  
Lr  
Group Number
5  
13
Not Available  
Period Number
7  
7  
Block
d block  
d block  
Element Family
Transition Metal  
Actinide  
CAS Number
53850354  
14
22537195  
15
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.
  
  • It is synthetically produced metal.
  • Radiation hazard can be produce by it.
  
Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced  
Bombarding Californium-252 with Boron Nuclei, Found in Minerals, Mining  
History
  
  
Who Discovered
Joint Institute for Nuclear Research  
Lawrence Berkeley National Laboratory and Joint Institute for Nuclear Research  
Discovery
In 1968  
In 1961–1971  
Abundance
  
  
Uses
Uses & Benefits
  • Currently known uses of Dubnium metal are limited to research purpose only.
  
  • Currently known uses of Lawrencium metal are limited to research purpose only.
  
Industrial Uses
NA  
NA  
Medical Uses
NA  
NA  
Other Uses
Research Purposes  
NA  
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  
1,627.00 °C  
20
Boiling Point
Not Available  
Not Available  
Appearance
  
  
Physical State
Solid  
Solid  
Color
Unknown  
Silver  
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  
Lr  
Isotopes
  
  
Known Isotopes
10  
28
10  
28
Electronegativity
  
  
Electropositivity
  
  
Ionization Energies
  
  
1st Energy Level
664.80 kJ/mol  
38
470.00 kJ/mol  
99+
2nd Energy Level
1,546.70 kJ/mol  
38
1,428.00 kJ/mol  
99+
3rd Energy Level
2,378.40 kJ/mol  
99+
2,228.00 kJ/mol  
99+
4th Energy Level
3,298.80 kJ/mol  
99+
4,910.00 kJ/mol  
21
5th Energy Level
4,305.20 kJ/mol  
39
Not Available  
Electrochemical Equivalent
Not Available  
3.23 g/amp-hr  
11
Electron Work Function
Not Available  
Not Available  
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Ionization, Radioactive Isotopes  
Atomic Properties
Atomic Number
105  
13
103  
15
Electron Configuration
[Rn] 5f14 6d3 7s2  
[Rn] 5f14 7s2 7p1  
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
103  
15
Number of Neutrons
157  
7
157  
7
Number of Electrons
105  
13
103  
15
Radius of an Atom
  
  
Atomic Radius
139.00 pm  
39
Not Available  
Covalent Radius
149.00 pm  
35
Not Available  
Van der Waals Radius
Not Available  
246.00 pm  
8
Atomic Weight
268.00 amu  
10
266.00 amu  
12
Atomic Volume
Not Available  
Not Available  
Adjacent Atomic Numbers
  
  
Previous Element
Rutherfordium
  
Nobelium
  
Next Element
Seaborgium
  
Rutherfordium
  
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
Not Available  
Tensile Strength
Not Available  
Not Available  
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Elasticity properties
  
  
Poisson Ratio
Not Available  
0.32  
12
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  
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