Home
 Compare Metals

Dubnium vs Lawrencium

Dubnium
Lawrencium
Lawrencium vs Dubnium


Periodic Table
Symbol
Db  
Lr  
Group Number
5  
13
3  
15
Period Number
7  
7  
Block
d block  
d block  
Element Family
Transition Metal  
Actinide  
CAS Number
53850354  
14
22537195  
15
Space Group Name
-  
-  
Space Group Number
166.00  
9
225.00  
3
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
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
40
Abundance In Sun
-  
-  
Abundance In Meteorites
0.00 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
-  
0.00 %  
99+
Abundance In Oceans
-  
-  
Abundance In Humans
-  
-  
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
-  
-  
Medical Uses
-  
-  
Other Uses
Research Purposes  
-  
Biological Properties
  
  
Toxicity
-  
-  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
-  
1,627.00 °C  
20
Boiling Point
0.00 °C  
99+
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Silver  
Luster
Unknown Luster  
Unknown Luster  
Hardness
  
  
Mohs Hardness
6.00  
6
-  
Brinell Hardness
330.00 MPa  
38
500.00 MPa  
28
Vickers Hardness
400.00 MPa  
99+
500.00 MPa  
35
Speed of Sound
2,680.00 m/s  
99+
2,760.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.20  
99+
1.30  
99+
Reflectivity
55.00 %  
27
65.00 %  
18
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Db  
Lr  
Isotopes
  
  
Known Isotopes
10  
28
10  
28
Electronegativity
  
  
Pauling Electronegativity
2.20  
5
1.30  
33
Sanderson Electronegativity
1.30  
25
1.30  
25
Allred Rochow Electronegativity
1.30  
25
1.30  
25
Mulliken-Jaffe Electronegativity
1.10  
99+
1.30  
33
Allen Electronegativity
1.30  
40
1.30  
40
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.00  
99+
Ionization Energies
  
  
1st Energy Level
664.80 kJ/mol  
38
470.00 kJ/mol  
99+
2nd Energy Level
1,546.70 kJ/mol  
39
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  
31
5th Energy Level
4,305.20 kJ/mol  
99+
4,780.00 kJ/mol  
99+
6th Energy Level
12,900.00 kJ/mol  
5
4,780.00 kJ/mol  
99+
7th Energy level
3,300.00 kJ/mol  
99+
4,780.00 kJ/mol  
99+
8th Energy Level
5,280.00 kJ/mol  
99+
4,780.00 kJ/mol  
99+
9th Energy Level
5,780.00 kJ/mol  
99+
4,780.00 kJ/mol  
99+
10th Energy Level
8,830.00 kJ/mol  
22
5,800.00 kJ/mol  
99+
11th Energy Level
3,300.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
12th Energy Level
88,300.00 kJ/mol  
2
47,800.00 kJ/mol  
22
13th Energy Level
4,760.00 kJ/mol  
99+
4,780.00 kJ/mol  
99+
14th Energy Level
1,120.00 kJ/mol  
99+
1,186.00 kJ/mol  
99+
15th Energy Level
33,000.00 kJ/mol  
99+
47,800.00 kJ/mol  
99+
16th Energy Level
33,000.00 kJ/mol  
99+
470.00 kJ/mol  
99+
17th Energy Level
1,129.00 kJ/mol  
19
1,186.00 kJ/mol  
15
18th Energy Level
0.00 kJ/mol  
99+
4,780.00 kJ/mol  
99+
19th Energy Level
1,094.90 kJ/mol  
18
1,186.00 kJ/mol  
12
20th Energy Level
0.00 kJ/mol  
99+
860.00 kJ/mol  
17
21st Energy Level
883.00 kJ/mol  
36
1,186.00 kJ/mol  
27
22nd Energy Level
330.00 kJ/mol  
99+
388.00 kJ/mol  
99+
23rd Energy Level
1,150.00 kJ/mol  
33
1,180.00 kJ/mol  
32
24th Energy Level
528.30 kJ/mol  
99+
546.10 kJ/mol  
99+
25th Energy Level
0.00 kJ/mol  
99+
0.00 kJ/mol  
99+
26th Energy Level
579.80 kJ/mol  
99+
594.70 kJ/mol  
99+
27th Energy Level
0.00 kJ/mol  
99+
470.00 kJ/mol  
99+
28th Energy Level
1,150.00 kJ/mol  
3
478.00 kJ/mol  
99+
29th Energy Level
1,094.00 kJ/mol  
5
580.00 kJ/mol  
99+
30th Energy Level
0.00 kJ/mol  
99+
0.00 kJ/mol  
99+
Electrochemical Equivalent
3.00 g/amp-hr  
21
3.23 g/amp-hr  
12
Electron Work Function
4.90 eV  
12
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Ionization, Radioactive Isotopes  
Atomic
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  
8
157  
8
Number of Electrons
105  
13
103  
15
Radius of an Atom
  
  
Atomic Radius
139.00 pm  
99+
162.00 pm  
28
Covalent Radius
149.00 pm  
37
162.00 pm  
31
Van der Waals Radius
0.00 pm  
99+
246.00 pm  
12
Atomic Weight
268.00 amu  
10
266.00 amu  
12
Atomic Volume
22.80 cm3/mol  
17
35.10 cm3/mol  
7
Adjacent Atomic Numbers
  
  
Previous Element
Rutherfordium
  
Nobelium
  
Next Element
Seaborgium
  
Rutherfordium
  
Valence Electron Potential
0.00 (-eV)  
99+
0.00 (-eV)  
99+
Lattice Constant
-  
530.00 pm  
14
Lattice Angles
-  
-  
Lattice C/A Ratio
1.63  
14
1.60  
22
Mechanical
Density
  
  
Density At Room Temperature
29.30 g/cm3  
5
15.00 g/cm3  
22
Density When Liquid (at m.p.)
29.30 g/cm3  
6
15.60 g/cm3  
20
Tensile Strength
0.10 MPa  
99+
80.00 MPa  
29
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
30
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
34.00 GPa  
22
30.00 GPa  
27
Bulk Modulus
39.00 GPa  
39
15.00 GPa  
99+
Young's Modulus
0.00 GPa  
99+
210.00 GPa  
10
Poisson Ratio
0.39  
5
0.32  
12
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
39.00  
3
15.60  
22
Magnetic Ordering
-  
-  
Permeability
0.00 H/m  
17
0.00 H/m  
13
Susceptibility
0.00  
24
0.00  
23
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
6.80 nΩ·m  
99+
8.37 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
-  
50.00 kJ/mol  
26
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.22 J/(kg K)  
29
Molar Heat Capacity
29.30 J/mol·K  
11
27.00 J/mol·K  
29
Thermal Conductivity
0.00 W/m·K  
99+
0.00 W/m·K  
99+
Critical Temperature
1,323.00 K  
99+
1,323.00 K  
99+
Thermal Expansion
13.20 µm/(m·K)  
37
8.50 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
289.70 kJ/mol  
99+
341.90 kJ/mol  
37
Enthalpy of Fusion
-  
-  
Enthalpy of Atomization
-  
580.00 kJ/mol  
14
Standard Molar Entropy
55.00 J/mol.K  
34
54.80 J/mol.K  
35
Periodic Table >>
<< All

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

» More Compare Transition Metals
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!