Molybdenum Iron Comparison
Periodic Table
Symbol
Mo
Fe
Group Number
6
12
8
10
Period Number
5
4
Block
d block
d block
Element Family
Transition Metal
Transition Metal
CAS Number
7439987
99+
7439896
99+
Space Group Name
Im_ 3m
Im_ 3m
Space Group Number
229.00
1
229.00
1
Facts
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.
- Iron is not always magnetic in nature, its allotrope are ferromagnetic and the B allotrope is nonmagnetic.
- The blood consists Iron in hemoglobin molecules to transfer Oxygen in the body.
Sources
Found in Minerals, Mining, Ores of Minerals
Earth's crust, Found in Minerals
History
Who Discovered
Carl Wilhelm Scheele
Unknown
Discovery
In 1778
Before 5000 BC
Abundance
Abundance In Universe
5 * 10-7 %
19
1.1 * 10-1 %
1
Abundance In Sun
~0.0000009 %
19
~0.1 %
1
Abundance In Meteorites
0.00 %
24
22.00 %
1
Abundance In Earth's Crust
0.00 %
39
6.30 %
2
Abundance In Oceans
0.00 %
9
0.00 %
12
Abundance In Humans
0.00 %
14
0.01 %
5
Uses
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.
- Iron metal alloy steel is used in the application of civil engineering and manufacturing.
- Alloys of iron with nickel, vanadium, chromium, tungsten and manganese have very useful properties.
Industrial Uses
Aerospace Industry, Electrical Industry, Electronic Industry
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
Medical Uses
NA
Pharmaceutical Industry, Surgical Instruments Manufacturing
Other Uses
Alloys
Alloys, Sculptures, Statues
Biological Properties
Toxicity
Toxic
Non Toxic
Present in Human Body
Yes
Yes
In Blood
0.00 Blood/mg dm-3
31
447.00 Blood/mg dm-3
3
In Bone
0.70 p.p.m.
18
380.00 p.p.m.
5
Physical Properties
Melting Point
2,617.00 °C
5
1,535.00 °C
25
Boiling Point
4,612.00 °C
9
2,750.00 °C
37
Appearance
Physical State
Solid
Solid
Color
Gray
Gray
Luster
Metallic
Metallic
Hardness
Mohs Hardness
5.50
7
4.00
10
Brinell Hardness
1,370.00 MPa
7
200.00 MPa
40
Vickers Hardness
1,400.00 MPa
6
608.00 MPa
18
Speed of Sound
5,400.00 m/s
6
5,120.00 m/s
8
Optical Properties
Reflectivity
58.00 %
15
65.00 %
12
Allotropes
No
Yes
α Allotropes
Not Available
Ferrite (alpha Iron)
β Allotropes
Not Available
beta Iron
γ Allotropes
Not Available
gamma Iron
Chemical Properties
Chemical Formula
Mo
Fe
Isotopes
Known Isotopes
25
14
26
13
Electronegativity
Pauling Electronegativity
2.16
5
1.83
14
Sanderson Electronegativity
1.15
19
2.20
7
Allred Rochow Electronegativity
1.30
24
1.64
8
Allen Electronegativity
2.16
3
1.80
12
Electropositivity
Pauling Electropositivity
1.84
99+
2.17
40
Ionization Energies
1st Energy Level
684.30 kJ/mol
37
762.50 kJ/mol
17
2nd Energy Level
1,560.00 kJ/mol
37
1,561.90 kJ/mol
36
3rd Energy Level
2,618.00 kJ/mol
99+
2,957.00 kJ/mol
29
4th Energy Level
4,480.00 kJ/mol
26
5,290.00 kJ/mol
16
5th Energy Level
5,257.00 kJ/mol
32
7,240.00 kJ/mol
16
6th Energy Level
6,640.80 kJ/mol
22
9,560.00 kJ/mol
14
7th Energy level
12,125.00 kJ/mol
13
12,060.00 kJ/mol
15
8th Energy Level
13,860.00 kJ/mol
16
14,580.00 kJ/mol
14
9th Energy Level
15,835.00 kJ/mol
16
22,540.00 kJ/mol
5
10th Energy Level
17,980.00 kJ/mol
18
25,290.00 kJ/mol
8
11th Energy Level
20,190.00 kJ/mol
17
28,000.00 kJ/mol
9
12th Energy Level
22,219.00 kJ/mol
15
31,920.00 kJ/mol
9
13th Energy Level
26,930.00 kJ/mol
13
34,830.00 kJ/mol
9
14th Energy Level
29,196.00 kJ/mol
13
37,840.00 kJ/mol
11
15th Energy Level
52,490.00 kJ/mol
7
44,100.00 kJ/mol
11
16th Energy Level
55,000.00 kJ/mol
8
47,206.00 kJ/mol
13
17th Energy Level
61,400.00 kJ/mol
9
122,200.00 kJ/mol
1
18th Energy Level
67,700.00 kJ/mol
9
131,000.00 kJ/mol
2
19th Energy Level
74,000.00 kJ/mol
9
140,500.00 kJ/mol
3
20th Energy Level
80,400.00 kJ/mol
10
152,600.00 kJ/mol
5
21st Energy Level
87,000.00 kJ/mol
9
163,000.00 kJ/mol
5
22nd Energy Level
93,400.00 kJ/mol
7
173,600.00 kJ/mol
4
23rd Energy Level
98,420.00 kJ/mol
6
188,100.00 kJ/mol
4
24th Energy Level
104,400.00 kJ/mol
2
195,200.00 kJ/mol
1
25th Energy Level
121,900.00 kJ/mol
1
Not Available
26th Energy Level
127,700.00 kJ/mol
1
Not Available
27th Energy Level
133,800.00 kJ/mol
1
Not Available
28th Energy Level
139,800.00 kJ/mol
1
Not Available
29th Energy Level
148,100.00 kJ/mol
1
Not Available
30th Energy Level
154,500.00 kJ/mol
1
Not Available
Electrochemical Equivalent
0.89 g/amp-hr
99+
0.69 g/amp-hr
99+
Electron Work Function
4.60 eV
12
4.70 eV
10
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
Corrosion, Ionization, Solubility
Atomic Properties
Atomic Number
42
99+
26
99+
Electron Configuration
[Kr] 4d5 5s1
[Ar] 3d6 4s2
Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
BCC-Crystal-Structure-.jpg#100
Atom
Number of Protons
42
99+
26
99+
Number of Neutrons
54
99+
30
99+
Number of Electrons
42
99+
26
99+
Radius of an Atom
Atomic Radius
139.00 pm
39
126.00 pm
99+
Covalent Radius
154.00 pm
32
132.00 pm
99+
Van der Waals Radius
200.00 pm
28
200.00 pm
28
Atomic Weight
95.95 amu
99+
55.85 amu
99+
Atomic Volume
9.40 cm3/mol
99+
7.10 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
88.60 (-eV)
13
67.00 (-eV)
20
Lattice Constant
314.70 pm
99+
286.65 pm
99+
Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
10.28 g/cm3
36
7.87 g/cm3
99+
Density When Liquid (at m.p.)
9.33 g/cm3
20
6.98 g/cm3
35
Tensile Strength
324.00 MPa
13
11,000.00 MPa
1
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
0.00 (Pa)
28
Vapor Pressure at 2000 K
0.00 (Pa)
26
36.80 (Pa)
5
Elasticity properties
Shear Modulus
126.00 GPa
8
82.00 GPa
11
Bulk Modulus
230.00 GPa
6
170.00 GPa
10
Young's Modulus
329.00 GPa
6
211.00 GPa
9
Poisson Ratio
0.31
13
0.29
15
Other Mechanical Properties
Ductile, Weldable
Ductile, Malleable, Weldable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
10.22
27
7.20
99+
Magnetic Ordering
Paramagnetic
Ferromagnetic
Permeability
Not Available
6.3 * 10-3 H/m
1
Susceptibility
Not Available
2,00,000.00
1
Electrical Properties
Electrical Property
Semiconductor
Conductor
Resistivity
53.40 nΩ·m
99+
96.10 nΩ·m
32
Electrical Conductivity
0.19 106/cm Ω
11
0.10 106/cm Ω
20
Electron Affinity
71.90 kJ/mol
14
15.70 kJ/mol
34
Thermal Properties
Specific Heat
0.25 J/(kg K)
21
0.44 J/(kg K)
13
Molar Heat Capacity
24.06 J/mol·K
99+
25.10 J/mol·K
99+
Thermal Conductivity
138.00 W/m·K
12
80.40 W/m·K
22
Critical Temperature
Not Available
Not Available
Thermal Expansion
4.80 µm/(m·K)
99+
11.80 µm/(m·K)
33
Enthalpy
Enthalpy of Vaporization
594.10 kJ/mol
8
351.00 kJ/mol
23
Enthalpy of Fusion
27.61 kJ/mol
5
14.90 kJ/mol
22
Enthalpy of Atomization
653.00 kJ/mol
7
414.20 kJ/mol
19
Standard Molar Entropy
28.70 J/mol.K
99+
27.30 J/mol.K
99+
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