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Bismuth vs Molybdenum

Bismuth
Molybdenum
Molybdenum vs Bismuth


Periodic Table
Symbol
Bi  
Mo  
Group Number
15  
3
6  
12
Period Number
6  
5  
Block
p block  
d block  
Element Family
Post-​Transition  
Transition Metal  
CAS Number
7440699  
22
7439987  
99+
Space Group Name
C12/m1  
Im_ 3m  
Space Group Number
12.00  
15
229.00  
2
Facts
Interesting Facts
  • Bismuth metal is soluble and reacts with concentrated nitric acid.
  • It oxides are used as a yellow pigment in paint. Bismuth chloride oxide BiClO gives a pearly texture to cosmetics.
  
  • 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, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Claude François Geoffroy  
Carl Wilhelm Scheele  
Discovery
In 1753  
In 1778  
Abundance
  
  
Abundance In Universe
0.00 %  
26
0.00 %  
20
Abundance In Sun
0.00 %  
14
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 %  
24
0.00 %  
9
Abundance In Humans
0.00 %  
24
0.00 %  
17
Uses
Uses & Benefits
  • Tin and bismuth alloys have a very low melting point and hence it is used in fire detector and the fire extinguishers. It also used in electric solders and fuses.
  
  • 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
Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Aerospace Industry, Electrical Industry, Electronic Industry  
Medical Uses
Pharmaceutical Industry  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Low Toxic  
Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.02 Blood/mg dm-3  
20
0.00 Blood/mg dm-3  
31
In Bone
0.20 p.p.m.  
27
0.70 p.p.m.  
20
Physical
Melting Point
271.30 °C  
99+
2,617.00 °C  
5
Boiling Point
1,560.00 °C  
99+
4,612.00 °C  
9
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
2.25  
16
5.50  
7
Brinell Hardness
70.00 MPa  
99+
1,370.00 MPa  
7
Vickers Hardness
30.00 MPa  
99+
1,400.00 MPa  
11
Speed of Sound
1,790.00 m/s  
99+
5,400.00 m/s  
9
Optical Properties
  
  
Refractive Index
2.50  
5
2.00  
15
Reflectivity
70.00 %  
13
58.00 %  
25
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Bi  
Mo  
Isotopes
  
  
Known Isotopes
33  
6
25  
14
Electronegativity
  
  
Pauling Electronegativity
2.02  
7
2.16  
6
Sanderson Electronegativity
2.34  
3
1.15  
34
Allred Rochow Electronegativity
1.67  
7
1.30  
25
Mulliken-Jaffe Electronegativity
2.15  
8
2.16  
7
Allen Electronegativity
2.01  
5
2.16  
3
Electropositivity
  
  
Pauling Electropositivity
1.98  
99+
1.84  
99+
Ionization Energies
  
  
1st Energy Level
703.00 kJ/mol  
35
684.30 kJ/mol  
37
2nd Energy Level
1,610.00 kJ/mol  
34
1,560.00 kJ/mol  
38
3rd Energy Level
2,466.00 kJ/mol  
99+
2,618.00 kJ/mol  
99+
4th Energy Level
4,370.00 kJ/mol  
38
4,480.00 kJ/mol  
36
5th Energy Level
5,400.00 kJ/mol  
99+
5,257.00 kJ/mol  
99+
6th Energy Level
8,520.00 kJ/mol  
29
6,640.80 kJ/mol  
99+
7th Energy level
7,030.00 kJ/mol  
99+
12,125.00 kJ/mol  
13
8th Energy Level
7,030.00 kJ/mol  
37
13,860.00 kJ/mol  
16
9th Energy Level
7,030.00 kJ/mol  
34
15,835.00 kJ/mol  
16
10th Energy Level
7,030.00 kJ/mol  
38
17,980.00 kJ/mol  
18
11th Energy Level
7,030.00 kJ/mol  
36
20,190.00 kJ/mol  
17
12th Energy Level
7,030.00 kJ/mol  
99+
22,219.00 kJ/mol  
38
13th Energy Level
7,030.00 kJ/mol  
32
26,930.00 kJ/mol  
13
14th Energy Level
7,030.00 kJ/mol  
22
29,196.00 kJ/mol  
13
15th Energy Level
70,300.00 kJ/mol  
28
52,490.00 kJ/mol  
99+
16th Energy Level
70,300.00 kJ/mol  
23
55,000.00 kJ/mol  
99+
17th Energy Level
703.00 kJ/mol  
99+
61,400.00 kJ/mol  
9
18th Energy Level
7,030.00 kJ/mol  
34
67,700.00 kJ/mol  
9
19th Energy Level
703.00 kJ/mol  
40
74,000.00 kJ/mol  
9
20th Energy Level
703.00 kJ/mol  
34
80,400.00 kJ/mol  
10
21st Energy Level
7,030.00 kJ/mol  
12
87,000.00 kJ/mol  
9
22nd Energy Level
703.00 kJ/mol  
28
93,400.00 kJ/mol  
7
23rd Energy Level
7,030.00 kJ/mol  
10
98,420.00 kJ/mol  
6
24th Energy Level
703.00 kJ/mol  
27
104,400.00 kJ/mol  
2
25th Energy Level
703.00 kJ/mol  
29
121,900.00 kJ/mol  
1
26th Energy Level
703.00 kJ/mol  
28
127,700.00 kJ/mol  
1
27th Energy Level
703.00 kJ/mol  
29
133,800.00 kJ/mol  
1
28th Energy Level
703.00 kJ/mol  
34
139,800.00 kJ/mol  
1
29th Energy Level
703.00 kJ/mol  
35
148,100.00 kJ/mol  
1
30th Energy Level
703.00 kJ/mol  
29
154,500.00 kJ/mol  
1
Electrochemical Equivalent
2.60 g/amp-hr  
23
0.89 g/amp-hr  
99+
Electron Work Function
4.22 eV  
29
4.60 eV  
17
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility  
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
83  
33
42  
99+
Electron Configuration
[Xe] 4f14 5d10 6s2 6p3  
[Kr] 4d5 5s1  
Crystal Structure
Rhombohedral (RHO)  
Body Centered Cubic (BCC)  
Crystal Lattice
RHO-Crystal-Structure-of-Bismuth.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
83  
33
42  
99+
Number of Neutrons
126  
19
54  
99+
Number of Electrons
83  
33
42  
99+
Radius of an Atom
  
  
Atomic Radius
156.00 pm  
31
139.00 pm  
99+
Covalent Radius
148.00 pm  
38
154.00 pm  
34
Van der Waals Radius
207.00 pm  
33
200.00 pm  
35
Atomic Weight
208.98 amu  
29
95.95 amu  
99+
Atomic Volume
21.30 cm3/mol  
23
9.40 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Lead
  
Niobium
  
Next Element
Polonium
  
Technetium
  
Valence Electron Potential
41.90 (-eV)  
99+
88.60 (-eV)  
13
Lattice Constant
667.40 pm  
2
314.70 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.86  
4
1.03  
99+
Mechanical
Density
  
  
Density At Room Temperature
9.78 g/cm3  
99+
10.28 g/cm3  
39
Density When Liquid (at m.p.)
10.05 g/cm3  
99+
9.33 g/cm3  
99+
Tensile Strength
32.00 MPa  
99+
324.00 MPa  
15
Viscosity
0.00  
29
0.00  
5
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
24
0.00 (Pa)  
27
Elasticity properties
  
  
Shear Modulus
12.00 GPa  
99+
126.00 GPa  
8
Bulk Modulus
31.00 GPa  
99+
230.00 GPa  
6
Young's Modulus
32.00 GPa  
99+
329.00 GPa  
6
Poisson Ratio
0.33  
11
0.31  
13
Other Mechanical Properties
-  
Ductile, Weldable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
9.79  
99+
10.22  
40
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
20
0.00 H/m  
9
Susceptibility
0.00  
36
0.00  
29
Electrical Properties
  
  
Electrical Property
Semiconductor  
Semiconductor  
Resistivity
1.29 nΩ·m  
99+
53.40 nΩ·m  
99+
Electrical Conductivity
0.01 106/cm Ω  
99+
0.19 106/cm Ω  
11
Electron Affinity
91.20 kJ/mol  
13
71.90 kJ/mol  
16
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.25 J/(kg K)  
21
Molar Heat Capacity
25.52 J/mol·K  
99+
24.06 J/mol·K  
99+
Thermal Conductivity
7.97 W/m·K  
99+
138.00 W/m·K  
12
Critical Temperature
544.00 K  
99+
2,896.00 K  
6
Thermal Expansion
13.40 µm/(m·K)  
34
4.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
151.00 kJ/mol  
99+
594.10 kJ/mol  
9
Enthalpy of Fusion
10.90 kJ/mol  
39
27.61 kJ/mol  
5
Enthalpy of Atomization
207.10 kJ/mol  
99+
653.00 kJ/mol  
7
Standard Molar Entropy
56.70 J/mol.K  
32
28.70 J/mol.K  
99+
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