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Bohrium vs Seaborgium

Bohrium
Seaborgium
Seaborgium vs Bohrium


Periodic Table
Symbol
Bh  
Sg  
Group Number
7  
11
6  
12
Period Number
7  
7  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
54037148  
12
54038812  
9
Space Group Name
-  
-  
Space Group Number
276.00  
1
166.00  
9
Facts
Interesting Facts
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
  • Seaborgium most stable isotope is Sg and it has 2.1 min of half- life.
  • And other isotopes of Seaborgium have half-lives as short as 3 ms.
  
Sources
Found in Minerals, Mining, Synthetically Produced  
Synthetically Produced  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Lawrence Berkeley National Laboratory  
Discovery
In 1981  
In 1974  
Abundance
  
  
Abundance In Universe
0.00 %  
37
0.00 %  
40
Abundance In Sun
-  
-  
Abundance In Meteorites
0.00 %  
99+
-  
Abundance In Earth's Crust
0.00 %  
99+
-  
Abundance In Oceans
-  
-  
Abundance In Humans
-  
-  
Uses
Uses & Benefits
  • Currently known uses of Bohrium metal are limited to research purpose only.
  
  • Currently known uses of Seaborgium metal are limited to research purpose only.
  
Industrial Uses
-  
-  
Medical Uses
-  
-  
Other Uses
Research Purposes  
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  
27
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
-  
-  
Boiling Point
0.00 °C  
99+
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
-  
Luster
Unknown Luster  
Unknown Luster  
Hardness
  
  
Mohs Hardness
7.00  
3
6.00  
6
Brinell Hardness
270.00 MPa  
99+
400.00 MPa  
34
Vickers Hardness
2,700.00 MPa  
4
520.00 MPa  
33
Speed of Sound
2,680.00 m/s  
99+
3,200.00 m/s  
35
Optical Properties
  
  
Refractive Index
1.50  
36
1.30  
99+
Reflectivity
59.00 %  
24
68.00 %  
15
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Bh  
Sg  
Isotopes
  
  
Known Isotopes
5  
32
9  
29
Electronegativity
  
  
Pauling Electronegativity
2.00  
8
0.00  
99+
Sanderson Electronegativity
1.30  
25
1.90  
13
Allred Rochow Electronegativity
1.30  
25
1.30  
25
Mulliken-Jaffe Electronegativity
1.30  
33
1.30  
33
Allen Electronegativity
2.00  
6
1.90  
8
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.20  
39
Ionization Energies
  
  
1st Energy Level
742.90 kJ/mol  
23
757.40 kJ/mol  
21
2nd Energy Level
1,688.50 kJ/mol  
31
1,732.90 kJ/mol  
29
3rd Energy Level
2,566.50 kJ/mol  
99+
2,483.50 kJ/mol  
99+
4th Energy Level
3,598.90 kJ/mol  
99+
3,415.60 kJ/mol  
99+
5th Energy Level
4,727.80 kJ/mol  
99+
4,561.80 kJ/mol  
99+
6th Energy Level
5,991.70 kJ/mol  
99+
5,715.80 kJ/mol  
99+
7th Energy level
7,226.80 kJ/mol  
34
5,700.00 kJ/mol  
99+
8th Energy Level
7,100.00 kJ/mol  
33
5,700.00 kJ/mol  
99+
9th Energy Level
5,800.00 kJ/mol  
99+
5,710.00 kJ/mol  
99+
10th Energy Level
7,100.00 kJ/mol  
35
6,270.00 kJ/mol  
99+
11th Energy Level
8,200.00 kJ/mol  
25
6,600.00 kJ/mol  
39
12th Energy Level
82,700.00 kJ/mol  
4
971.00 kJ/mol  
99+
13th Energy Level
7,100.00 kJ/mol  
29
5,700.00 kJ/mol  
99+
14th Energy Level
8,200.00 kJ/mol  
17
5,700.00 kJ/mol  
99+
15th Energy Level
82,000.00 kJ/mol  
14
54,000.00 kJ/mol  
99+
16th Energy Level
71,100.00 kJ/mol  
20
64,000.00 kJ/mol  
27
17th Energy Level
820.00 kJ/mol  
31
579.80 kJ/mol  
99+
18th Energy Level
8,200.00 kJ/mol  
20
3,300.00 kJ/mol  
99+
19th Energy Level
820.80 kJ/mol  
28
579.80 kJ/mol  
99+
20th Energy Level
820.00 kJ/mol  
21
579.00 kJ/mol  
99+
21st Energy Level
8,200.00 kJ/mol  
11
6,270.00 kJ/mol  
14
22nd Energy Level
820.00 kJ/mol  
16
573.00 kJ/mol  
99+
23rd Energy Level
8,200.00 kJ/mol  
8
5,790.00 kJ/mol  
22
24th Energy Level
820.00 kJ/mol  
12
971.00 kJ/mol  
4
25th Energy Level
820.00 kJ/mol  
10
0.00 kJ/mol  
99+
26th Energy Level
820.00 kJ/mol  
10
579.10 kJ/mol  
99+
27th Energy Level
820.00 kJ/mol  
9
870.00 kJ/mol  
7
28th Energy Level
820.00 kJ/mol  
15
870.00 kJ/mol  
10
29th Energy Level
820.00 kJ/mol  
14
761.90 kJ/mol  
21
30th Energy Level
820.00 kJ/mol  
10
0.00 kJ/mol  
99+
Electrochemical Equivalent
3.00 g/amp-hr  
21
3.20 g/amp-hr  
14
Electron Work Function
4.90 eV  
12
6.00 eV  
1
Other Chemical Properties
Ionization, Radioactive Isotopes  
-  
Atomic
Atomic Number
107  
11
106  
12
Electron Configuration
[Rn] 5f14 6d5 7s2  
[Rn] 5f14 6d2 7s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
107  
11
106  
12
Number of Neutrons
155  
9
157  
8
Number of Electrons
107  
11
106  
12
Radius of an Atom
  
  
Atomic Radius
128.00 pm  
99+
132.00 pm  
99+
Covalent Radius
141.00 pm  
99+
143.00 pm  
99+
Van der Waals Radius
0.00 pm  
99+
230.00 pm  
24
Atomic Weight
270.00 amu  
8
269.00 amu  
9
Atomic Volume
23.70 cm3/mol  
14
35.00 cm3/mol  
8
Adjacent Atomic Numbers
  
  
Previous Element
Seaborgium
  
Dubnium
  
Next Element
Hassium
  
Bohrium
  
Valence Electron Potential
27.20 (-eV)  
99+
6.10 (-eV)  
99+
Lattice Constant
-  
-  
Lattice Angles
-  
-  
Lattice C/A Ratio
1.57  
99+
1.36  
99+
Mechanical
Density
  
  
Density At Room Temperature
37.10 g/cm3  
3
35.00 g/cm3  
4
Density When Liquid (at m.p.)
37.10 g/cm3  
3
35.00 g/cm3  
4
Tensile Strength
152.00 MPa  
24
30.00 MPa  
99+
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
28.00 GPa  
32
30.00 GPa  
27
Bulk Modulus
37.00 GPa  
99+
0.00 GPa  
99+
Young's Modulus
0.00 GPa  
99+
12.60 GPa  
99+
Poisson Ratio
0.35  
9
0.25  
24
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
37.00  
5
35.00  
6
Magnetic Ordering
-  
-  
Permeability
0.00 H/m  
11
0.00 H/m  
7
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
6.50 nΩ·m  
99+
0.38 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+
0.27 J/(kg K)  
19
Molar Heat Capacity
37.10 J/mol·K  
2
35.00 J/mol·K  
5
Thermal Conductivity
37.00 W/m·K  
36
0.14 W/m·K  
99+
Critical Temperature
1,323.00 K  
99+
1,200.00 K  
99+
Thermal Expansion
14.30 µm/(m·K)  
28
11.00 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
270.50 kJ/mol  
99+
585.00 kJ/mol  
10
Enthalpy of Fusion
-  
-  
Enthalpy of Atomization
-  
650.00 kJ/mol  
8
Standard Molar Entropy
57.00 J/mol.K  
30
42.70 J/mol.K  
99+
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