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Molybdenum
Molybdenum




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Mo Element

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1 Periodic Table

1.1 Symbol

Mo

1.2 Group Number

6
Rank: 12 (Overall)
Gadolinium
0 17

1.3 Period Number

5
Rank: 3 (Overall)
Lithium
2 7

1.4 Block

d block

1.5 Element Family

Transition Metal

1.6 CAS Number

7439987
Rank: 80 (Overall)
Aluminium
7429905 54386242

1.7 Space Group Name

Im_ 3m

1.8 Space Group Number

229.00
Rank: 1 (Overall)
Plutonium
11 229

2 Facts

2.1 Interesting Facts

  • Molybdenum is highly reactive metal, hence not found free in nature .
  • Till 18th century Molybdenum element were often mistaken as a carbon or Lead.

2.2 Sources

Found in Minerals, Mining, Ores of Minerals

2.3 History

2.3.1 Who Discovered

Carl Wilhelm Scheele

2.3.2 Discovery

In 1778

2.4 Abundance

2.4.1 Abundance In Universe

0.00 %
Rank: 19 (Overall)
Thallium
5E-09 0.11

2.4.2 Abundance In Sun

0.00 %
Rank: 19 (Overall)
Beryllium
1E-08 0.1

2.4.3 Abundance In Meteorites

0.00 %
Rank: 24 (Overall)
Gold
1.7E-07 22

2.4.4 Abundance In Earth's Crust

0.00 %
Rank: 39 (Overall)
Radium
9.9E-12 8.1

2.4.5 Abundance In Oceans

0.00 %
Rank: 9 (Overall)
Protactinium
2E-23 1.1

2.4.6 Abundance In Humans

0.00 %
Rank: 14 (Overall)
Radium
1E-13 1.4

3 Uses

3.1 Uses & Benefits

  • 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.

3.1.1 Industrial Uses

Aerospace Industry, Electrical Industry, Electronic Industry

3.1.2 Medical Uses

NA

3.1.3 Other Uses

Alloys

3.2 Biological Properties

3.2.1 Toxicity

Toxic

3.2.2 Present in Human Body

60% - Transition Metals Metals have it !

3.2.3 In Blood

0.00 Blood/mg dm-3
Rank: 31 (Overall)
Plutonium
0 1970

3.2.4 In Bone

0.70 p.p.m.
Rank: 18 (Overall)
Plutonium
0 170000

4 Physical

4.1 Melting Point

2,617.00 °C
Rank: 5 (Overall)
Francium
27 3410

4.2 Boiling Point

4,612.00 °C
Rank: 9 (Overall)
Flerovium
147 5660

4.3 Appearance

4.3.1 Physical State

Solid

4.3.2 Color

Gray

4.3.3 Luster

Metallic

4.4 Hardness

4.4.1 Mohs Hardness

5.50
Rank: 7 (Overall)
Cesium
0.2 8.5

4.4.2 Brinell Hardness

1,370.00 MPa
Rank: 7 (Overall)
Cesium
0.14 3490

4.4.3 Vickers Hardness

1,400.00 MPa
Rank: 6 (Overall)
Palladium
121 3430

4.5 Speed of Sound

5,400.00 m/s
Rank: 6 (Overall)
Thallium
818 16200

4.6 Optical Properties

4.6.1 Refractive Index

Not Available
Rank: N/A (Overall)
Mercury
1.000933 1.7229

4.6.2 Reflectivity

58.00 %
Rank: 15 (Overall)
Silver
58 97

4.7 Allotropes

6% - Transition Metals Metals

4.7.1 α Allotropes

Not Available

4.7.2 β Allotropes

Not Available

4.7.3 γ Allotropes

Not Available

5 Chemical

5.1 Chemical Formula

Mo

5.2 Isotopes

5.2.1 Known Isotopes

25
Rank: 14 (Overall)
Tennessine
0 38

5.3 Electronegativity

5.3.1 Pauling Electronegativity

2.16
Rank: 5 (Overall)
Francium
0.7 2.54

5.3.2 Sanderson Electronegativity

1.15
Rank: 19 (Overall)
Cesium
0.22 2.56

5.3.3 Allred Rochow Electronegativity

1.30
Rank: 24 (Overall)
Cesium
0.86 1.82

5.3.4 Mulliken-Jaffe Electronegativity

Not Available
Rank: N/A (Overall)
Cesium
0.62 2.48

5.3.5 Allen Electronegativity

2.16
Rank: 3 (Overall)
Cesium
0.659 2.7

5.4 Electropositivity

5.4.1 Pauling Electropositivity

1.84
Rank: 48 (Overall)
Gold
1.46 3.3

5.5 Ionization Energies

5.5.1 1st Energy Level

684.30 kJ/mol
Rank: 37 (Overall)
Cesium
375.7 26130

5.5.2 2nd Energy Level

1,560.00 kJ/mol
Rank: 37 (Overall)
Ruthenium
710.2162 28750

5.5.3 3rd Energy Level

2,618.00 kJ/mol
Rank: 43 (Overall)
Osmium
1600 34230

5.5.4 4th Energy Level

4,480.00 kJ/mol
Rank: 26 (Overall)
Thorium
2780 37066

5.5.5 5th Energy Level

5,257.00 kJ/mol
Rank: 32 (Overall)
Dubnium
4305.2 97510

5.5.6 6th Energy Level

6,640.80 kJ/mol
Rank: 22 (Overall)
Seaborgium
5715.8 105800

5.5.7 7th Energy level

12,125.00 kJ/mol
Rank: 13 (Overall)
Bohrium
7226.8 114300

5.5.8 8th Energy Level

13,860.00 kJ/mol
Rank: 16 (Overall)
Hassium
8857.4 125300

5.5.9 9th Energy Level

15,835.00 kJ/mol
Rank: 16 (Overall)
Yttrium
14110 134700

5.5.10 10th Energy Level

17,980.00 kJ/mol
Rank: 18 (Overall)
Strontium
17100 144300

5.5.11 11th Energy Level

20,190.00 kJ/mol
Rank: 17 (Overall)
Yttrium
19900 169988

5.5.12 12th Energy Level

22,219.00 kJ/mol
Rank: 15 (Overall)
Copper
22219 189368

5.5.13 13th Energy Level

26,930.00 kJ/mol
Rank: 13 (Overall)
Vanadium
26930 76015

5.5.14 14th Energy Level

29,196.00 kJ/mol
Rank: 13 (Overall)
Iron
29196 86450

5.5.15 15th Energy Level

52,490.00 kJ/mol
Rank: 7 (Overall)
Manganese
41987 97510

5.5.16 16th Energy Level

55,000.00 kJ/mol
Rank: 8 (Overall)
Iron
47206 109480

5.5.17 17th Energy Level

61,400.00 kJ/mol
Rank: 9 (Overall)
Cobalt
52737 122200

5.5.18 18th Energy Level

67,700.00 kJ/mol
Rank: 9 (Overall)
Nickel
58570 134810

5.5.19 19th Energy Level

74,000.00 kJ/mol
Rank: 9 (Overall)
Copper
64702 148700

5.5.20 20th Energy Level

80,400.00 kJ/mol
Rank: 10 (Overall)
Zinc
80400 171200

5.5.21 21st Energy Level

87,000.00 kJ/mol
Rank: 9 (Overall)
Zinc
87000 179100

5.5.22 22nd Energy Level

93,400.00 kJ/mol
Rank: 7 (Overall)
Copper
93400 184900

5.5.23 23rd Energy Level

98,420.00 kJ/mol
Rank: 6 (Overall)
Copper
98420 198800

5.5.24 24th Energy Level

104,400.00 kJ/mol
Rank: 2 (Overall)
Iron
104400 195200

5.5.25 25th Energy Level

121,900.00 kJ/mol
Rank: 1 (Overall)
121900 121900

5.5.26 26th Energy Level

127,700.00 kJ/mol
Rank: 1 (Overall)
127700 127700

5.5.27 27th Energy Level

133,800.00 kJ/mol
Rank: 1 (Overall)
133800 133800

5.5.28 28th Energy Level

139,800.00 kJ/mol
Rank: 1 (Overall)
139800 139800

5.5.29 29th Energy Level

148,100.00 kJ/mol
Rank: 1 (Overall)
148100 148100

5.5.30 30th Energy Level

154,500.00 kJ/mol
Rank: 1 (Overall)
154500 154500

5.6 Electrochemical Equivalent

0.89 g/amp-hr
Rank: 60 (Overall)
Beryllium
0.16812 8.3209

5.7 Electron Work Function

4.60 eV
Rank: 12 (Overall)
Cesium
2.14 5.65

5.8 Other Chemical Properties

Anti Corrosion, Ionization, Radioactive Isotopes, Solubility

6 Atomic

6.1 Atomic Number

42
Rank: 70 (Overall)
Lithium
3 117

6.2 Electron Configuration

[Kr] 4d5 5s1

6.3 Crystal Structure

Body Centered Cubic (BCC)

6.3.1 Crystal Lattice

6.4 Atom

6.4.1 Number of Protons

42
Rank: 69 (Overall)
Lithium
3 117

6.4.2 Number of Neutrons

54
Rank: 52 (Overall)
Lithium
4 184

6.4.3 Number of Electrons

42
Rank: 69 (Overall)
Lithium
3 117

6.5 Radius of an Atom

6.5.1 Atomic Radius

139.00 pm
Rank: 39 (Overall)
Beryllium
112 265

6.5.2 Covalent Radius

154.00 pm
Rank: 32 (Overall)
Beryllium
96 260

6.5.3 Van der Waals Radius

200.00 pm
Rank: 28 (Overall)
Zinc
139 348

6.6 Atomic Weight

95.95 amu
Rank: 64 (Overall)
Lithium
6.94 294

6.7 Atomic Volume

9.40 cm3/mol
Rank: 51 (Overall)
Manganese
1.39 71.07

6.8 Adjacent Atomic Numbers

6.8.1 Previous Element

6.8.2 Next Element

6.9 Valence Electron Potential

88.60 (-eV)
Rank: 13 (Overall)
Francium
8 392.42

6.10 Lattice Constant

314.70 pm
Rank: 57 (Overall)
Beryllium
228.58 891.25

6.11 Lattice Angles

π/2, π/2, π/2

6.12 Lattice C/A Ratio

Not Available
Rank: N/A (Overall)
Beryllium
1.567 1.886

7 Mechanical

7.1 Density

7.1.1 Density At Room Temperature

10.28 g/cm3
Rank: 36 (Overall)
Lithium
0.534 40.7

7.1.2 Density When Liquid (at m.p.)

9.33 g/cm3
Rank: 20 (Overall)
Lithium
0.512 20

7.2 Tensile Strength

324.00 MPa
Rank: 13 (Overall)
Indium
2.5 11000

7.3 Viscosity

Not Available
Rank: N/A (Overall)
Mercury
0.001526 0.001526

7.4 Vapor Pressure

7.4.1 Vapor Pressure at 1000 K

Not Available
Rank: N/A (Overall)
Cerium
2.47E-11 121

7.4.2 Vapor Pressure at 2000 K

0.00 (Pa)
Rank: 26 (Overall)
Tungsten
2.62E-10 774

7.5 Elasticity properties

7.5.1 Shear Modulus

126.00 GPa
Rank: 8 (Overall)
Potassium
1.3 222

7.5.2 Bulk Modulus

230.00 GPa
Rank: 6 (Overall)
Cesium
1.6 462

7.5.3 Young's Modulus

329.00 GPa
Rank: 6 (Overall)
Cesium
1.7 528

7.6 Poisson Ratio

0.31
Rank: 13 (Overall)
Beryllium
0.032 0.47

7.7 Other Mechanical Properties

Ductile, Weldable

8 Magnetic

8.1 Magnetic Characteristics

8.1.1 Specific Gravity

10.22
Rank: 27 (Overall)
Lithium
0.53 4500

8.1.2 Magnetic Ordering

Paramagnetic

8.1.3 Permeability

Not Available
Rank: N/A (Overall)
Bismuth
1.25643E-06 0.0063

8.1.4 Susceptibility

Not Available
Rank: N/A (Overall)
Bismuth
-0.000166 200000

8.2 Electrical Properties

8.2.1 Electrical Property

Semiconductor

8.2.2 Resistivity

53.40 nΩ·m
Rank: 41 (Overall)
Thallium
0.18 961

8.2.3 Electrical Conductivity

0.19 106/cm Ω
Rank: 11 (Overall)
Plutonium
0.00666 0.63

8.2.4 Electron Affinity

71.90 kJ/mol
Rank: 14 (Overall)
Mercury
0 222.8

9 Thermal

9.1 Specific Heat

0.25 J/(kg K)
Rank: 21 (Overall)
Americium
0.11 3.6

9.2 Molar Heat Capacity

24.06 J/mol·K
Rank: 54 (Overall)
Beryllium
16.443 62.7

9.3 Thermal Conductivity

138.00 W/m·K
Rank: 12 (Overall)
Neptunium
6.3 429

9.4 Critical Temperature

Not Available
Rank: N/A (Overall)
Ytterbium
26.3 3223

9.5 Thermal Expansion

4.80 µm/(m·K)
Rank: 58 (Overall)
Tungsten
4.5 97

9.6 Enthalpy

9.6.1 Enthalpy of Vaporization

594.10 kJ/mol
Rank: 8 (Overall)
Zinc
7.32 799.1

9.6.2 Enthalpy of Fusion

27.61 kJ/mol
Rank: 5 (Overall)
Cesium
2.1 35.23

9.6.3 Enthalpy of Atomization

653.00 kJ/mol
Rank: 7 (Overall)
Mercury
61.5 837

9.7 Standard Molar Entropy

28.70 J/mol.K
Rank: 53 (Overall)
Beryllium
9.5 198.1