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Bohrium vs Molybdenum

Bohrium
Molybdenum
Molybdenum vs Bohrium


Periodic Table
Symbol
Bh  
Mo  
Group Number
7  
11
6  
12
Period Number
7  
5  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
54037148  
12
7439987  
99+
Space Group Name
-  
Im_ 3m  
Space Group Number
276.00  
1
229.00  
2
Facts
Interesting Facts
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
  • Molybdenum is highly reactive metal, hence not found free in nature .
  • Till 18th century Molybdenum element were often mistaken as a carbon or Lead.
  
Sources
Found in Minerals, Mining, Synthetically Produced  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Carl Wilhelm Scheele  
Discovery
In 1981  
In 1778  
Abundance
  
  
Abundance In Universe
0.00 %  
37
0.00 %  
20
Abundance In Sun
-  
0.00 %  
19
Abundance In Meteorites
0.00 %  
99+
0.00 %  
24
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
39
Abundance In Oceans
-  
0.00 %  
9
Abundance In Humans
-  
0.00 %  
17
Uses
Uses & Benefits
  • Currently known uses of Bohrium metal are limited to research purpose only.
  
  • Its alloys are used to make engine parts, drills, saw blade, etc.
  • Lubricant additive made up of Molybdenum disulfide is commonly used in the industry. It is also used as a catalyst.
  
Industrial Uses
-  
Aerospace Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
-  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
31
In Bone
0.00 p.p.m.  
99+
0.70 p.p.m.  
20
Physical
Melting Point
-  
2,617.00 °C  
5
Boiling Point
0.00 °C  
99+
4,612.00 °C  
9
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Gray  
Luster
Unknown Luster  
Metallic  
Hardness
  
  
Mohs Hardness
7.00  
3
5.50  
7
Brinell Hardness
270.00 MPa  
99+
1,370.00 MPa  
7
Vickers Hardness
2,700.00 MPa  
4
1,400.00 MPa  
11
Speed of Sound
2,680.00 m/s  
99+
5,400.00 m/s  
9
Optical Properties
  
  
Refractive Index
1.50  
36
2.00  
15
Reflectivity
59.00 %  
24
58.00 %  
25
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Bh  
Mo  
Isotopes
  
  
Known Isotopes
5  
32
25  
14
Electronegativity
  
  
Pauling Electronegativity
2.00  
8
2.16  
6
Sanderson Electronegativity
1.30  
25
1.15  
34
Allred Rochow Electronegativity
1.30  
25
1.30  
25
Mulliken-Jaffe Electronegativity
1.30  
33
2.16  
7
Allen Electronegativity
2.00  
6
2.16  
3
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
1.84  
99+
Ionization Energies
  
  
1st Energy Level
742.90 kJ/mol  
23
684.30 kJ/mol  
37
2nd Energy Level
1,688.50 kJ/mol  
31
1,560.00 kJ/mol  
38
3rd Energy Level
2,566.50 kJ/mol  
99+
2,618.00 kJ/mol  
99+
4th Energy Level
3,598.90 kJ/mol  
99+
4,480.00 kJ/mol  
36
5th Energy Level
4,727.80 kJ/mol  
99+
5,257.00 kJ/mol  
99+
6th Energy Level
5,991.70 kJ/mol  
99+
6,640.80 kJ/mol  
99+
7th Energy level
7,226.80 kJ/mol  
34
12,125.00 kJ/mol  
13
8th Energy Level
7,100.00 kJ/mol  
33
13,860.00 kJ/mol  
16
9th Energy Level
5,800.00 kJ/mol  
99+
15,835.00 kJ/mol  
16
10th Energy Level
7,100.00 kJ/mol  
35
17,980.00 kJ/mol  
18
11th Energy Level
8,200.00 kJ/mol  
25
20,190.00 kJ/mol  
17
12th Energy Level
82,700.00 kJ/mol  
4
22,219.00 kJ/mol  
38
13th Energy Level
7,100.00 kJ/mol  
29
26,930.00 kJ/mol  
13
14th Energy Level
8,200.00 kJ/mol  
17
29,196.00 kJ/mol  
13
15th Energy Level
82,000.00 kJ/mol  
14
52,490.00 kJ/mol  
99+
16th Energy Level
71,100.00 kJ/mol  
20
55,000.00 kJ/mol  
99+
17th Energy Level
820.00 kJ/mol  
31
61,400.00 kJ/mol  
9
18th Energy Level
8,200.00 kJ/mol  
20
67,700.00 kJ/mol  
9
19th Energy Level
820.80 kJ/mol  
28
74,000.00 kJ/mol  
9
20th Energy Level
820.00 kJ/mol  
21
80,400.00 kJ/mol  
10
21st Energy Level
8,200.00 kJ/mol  
11
87,000.00 kJ/mol  
9
22nd Energy Level
820.00 kJ/mol  
16
93,400.00 kJ/mol  
7
23rd Energy Level
8,200.00 kJ/mol  
8
98,420.00 kJ/mol  
6
24th Energy Level
820.00 kJ/mol  
12
104,400.00 kJ/mol  
2
25th Energy Level
820.00 kJ/mol  
10
121,900.00 kJ/mol  
1
26th Energy Level
820.00 kJ/mol  
10
127,700.00 kJ/mol  
1
27th Energy Level
820.00 kJ/mol  
9
133,800.00 kJ/mol  
1
28th Energy Level
820.00 kJ/mol  
15
139,800.00 kJ/mol  
1
29th Energy Level
820.00 kJ/mol  
14
148,100.00 kJ/mol  
1
30th Energy Level
820.00 kJ/mol  
10
154,500.00 kJ/mol  
1
Electrochemical Equivalent
3.00 g/amp-hr  
21
0.89 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.60 eV  
17
Other Chemical Properties
Ionization, Radioactive Isotopes  
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
107  
11
42  
99+
Electron Configuration
[Rn] 5f14 6d5 7s2  
[Kr] 4d5 5s1  
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
42  
99+
Number of Neutrons
155  
9
54  
99+
Number of Electrons
107  
11
42  
99+
Radius of an Atom
  
  
Atomic Radius
128.00 pm  
99+
139.00 pm  
99+
Covalent Radius
141.00 pm  
99+
154.00 pm  
34
Van der Waals Radius
0.00 pm  
99+
200.00 pm  
35
Atomic Weight
270.00 amu  
8
95.95 amu  
99+
Atomic Volume
23.70 cm3/mol  
14
9.40 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Seaborgium
  
Niobium
  
Next Element
Hassium
  
Technetium
  
Valence Electron Potential
27.20 (-eV)  
99+
88.60 (-eV)  
13
Lattice Constant
-  
314.70 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.57  
99+
1.03  
99+
Mechanical
Density
  
  
Density At Room Temperature
37.10 g/cm3  
3
10.28 g/cm3  
39
Density When Liquid (at m.p.)
37.10 g/cm3  
3
9.33 g/cm3  
99+
Tensile Strength
152.00 MPa  
24
324.00 MPa  
15
Viscosity
0.00  
25
0.00  
5
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.00 (Pa)  
27
Elasticity properties
  
  
Shear Modulus
28.00 GPa  
32
126.00 GPa  
8
Bulk Modulus
37.00 GPa  
99+
230.00 GPa  
6
Young's Modulus
0.00 GPa  
99+
329.00 GPa  
6
Poisson Ratio
0.35  
9
0.31  
13
Other Mechanical Properties
-  
Ductile, Weldable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
37.00  
5
10.22  
40
Magnetic Ordering
-  
Paramagnetic  
Permeability
0.00 H/m  
11
0.00 H/m  
9
Susceptibility
0.00  
24
0.00  
29
Electrical Properties
  
  
Electrical Property
-  
Semiconductor  
Resistivity
6.50 nΩ·m  
99+
53.40 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.19 106/cm Ω  
11
Electron Affinity
-  
71.90 kJ/mol  
16
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.25 J/(kg K)  
21
Molar Heat Capacity
37.10 J/mol·K  
2
24.06 J/mol·K  
99+
Thermal Conductivity
37.00 W/m·K  
36
138.00 W/m·K  
12
Critical Temperature
1,323.00 K  
99+
2,896.00 K  
6
Thermal Expansion
14.30 µm/(m·K)  
28
4.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
270.50 kJ/mol  
99+
594.10 kJ/mol  
9
Enthalpy of Fusion
-  
27.61 kJ/mol  
5
Enthalpy of Atomization
-  
653.00 kJ/mol  
7
Standard Molar Entropy
57.00 J/mol.K  
30
28.70 J/mol.K  
99+
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