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Magnesium vs Iron

Magnesium
Iron
Iron vs Magnesium


Periodic Table
Symbol
Mg  
Fe  
Group Number
2  
16
8  
10
Period Number
3  
4  
Block
s block  
d block  
Element Family
Alkaline Earth  
Transition Metal  
CAS Number
7439954  
99+
7439896  
99+
Space Group Name
P63/mmc  
Im_ 3m  
Space Group Number
194.00  
7
229.00  
2
Facts
Interesting Facts
  • Magnesium ions are present in every chlorophyll of every green plant .
  • Controlling Magnesium fire by pouring water on it will result in explosions.
  
  • 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
By Electrolysis Process, In Ocean, Mining  
Earth's crust, Found in Minerals  
History
  
  
Who Discovered
Joseph Black  
-  
Discovery
In 1755  
Before 5000 BC  
Abundance
  
  
Abundance In Universe
0.06 %  
3
0.11 %  
1
Abundance In Sun
0.07 %  
2
0.10 %  
1
Abundance In Meteorites
12.00 %  
2
22.00 %  
1
Abundance In Earth's Crust
2.90 %  
4
6.30 %  
2
Abundance In Oceans
0.13 %  
2
0.00 %  
12
Abundance In Humans
0.03 %  
5
0.01 %  
6
Uses
Uses & Benefits
  • Magnesium aluminum alloy improves the mechanical strength and welding characteristics and hence it is used in aeroplane and car manufacturing.
  • It is also used to remove sulfur from the molten iron and steel.
  
  • 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, Ammunition Industry, Automobile Industry, Chemical Industry, Pharmaceutical Industry  
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
Pharmaceutical Industry, Surgical Instruments Manufacturing  
Other Uses
Surgical Instruments Manufacturing  
Alloys, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Non Toxic  
Non Toxic  
Present in Human Body
Yes  
Yes  
In Blood
37.80 Blood/mg dm-3  
5
447.00 Blood/mg dm-3  
3
In Bone
1,800.00 p.p.m.  
4
380.00 p.p.m.  
5
Physical
Melting Point
650.00 °C  
99+
1,535.00 °C  
25
Boiling Point
1,107.00 °C  
99+
2,750.00 °C  
39
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gray  
Gray  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
4.00  
11
Brinell Hardness
260.00 MPa  
99+
200.00 MPa  
99+
Vickers Hardness
260.00 MPa  
99+
608.00 MPa  
27
Speed of Sound
4,940.00 m/s  
15
5,120.00 m/s  
12
Optical Properties
  
  
Refractive Index
1.49  
37
2.60  
4
Reflectivity
74.00 %  
9
65.00 %  
18
Allotropes
No  
Yes  
α Allotropes
-  
Ferrite (alpha Iron)  
β Allotropes
-  
beta Iron  
γ Allotropes
-  
gamma Iron  
Chemical
Chemical Formula
Mg  
Fe  
Isotopes
  
  
Known Isotopes
15  
24
26  
13
Electronegativity
  
  
Pauling Electronegativity
1.31  
32
1.83  
15
Sanderson Electronegativity
1.32  
24
2.20  
8
Allred Rochow Electronegativity
1.23  
26
1.64  
9
Mulliken-Jaffe Electronegativity
1.37  
30
1.83  
16
Allen Electronegativity
1.29  
99+
1.80  
15
Electropositivity
  
  
Pauling Electropositivity
2.69  
23
2.17  
99+
Ionization Energies
  
  
1st Energy Level
737.70 kJ/mol  
24
762.50 kJ/mol  
17
2nd Energy Level
1,450.70 kJ/mol  
99+
1,561.90 kJ/mol  
37
3rd Energy Level
7,732.70 kJ/mol  
5
2,957.00 kJ/mol  
29
4th Energy Level
10,542.50 kJ/mol  
4
5,290.00 kJ/mol  
25
5th Energy Level
13,630.00 kJ/mol  
3
7,240.00 kJ/mol  
25
6th Energy Level
18,020.00 kJ/mol  
3
9,560.00 kJ/mol  
20
7th Energy level
21,711.00 kJ/mol  
3
12,060.00 kJ/mol  
15
8th Energy Level
25,661.00 kJ/mol  
3
14,580.00 kJ/mol  
14
9th Energy Level
31,653.00 kJ/mol  
3
22,540.00 kJ/mol  
5
10th Energy Level
35,458.00 kJ/mol  
5
25,290.00 kJ/mol  
8
11th Energy Level
169,988.00 kJ/mol  
1
28,000.00 kJ/mol  
9
12th Energy Level
189,368.00 kJ/mol  
1
31,920.00 kJ/mol  
31
13th Energy Level
7,370.00 kJ/mol  
24
34,830.00 kJ/mol  
9
14th Energy Level
737.70 kJ/mol  
99+
37,840.00 kJ/mol  
11
15th Energy Level
73,700.00 kJ/mol  
21
44,100.00 kJ/mol  
99+
16th Energy Level
73,770.00 kJ/mol  
16
47,206.00 kJ/mol  
99+
17th Energy Level
737.70 kJ/mol  
37
122,200.00 kJ/mol  
1
18th Energy Level
7,370.00 kJ/mol  
27
131,000.00 kJ/mol  
2
19th Energy Level
737.70 kJ/mol  
34
140,500.00 kJ/mol  
3
20th Energy Level
737.00 kJ/mol  
28
152,600.00 kJ/mol  
5
21st Energy Level
737.70 kJ/mol  
99+
163,000.00 kJ/mol  
5
22nd Energy Level
738.00 kJ/mol  
22
173,600.00 kJ/mol  
4
23rd Energy Level
737.70 kJ/mol  
99+
188,100.00 kJ/mol  
4
24th Energy Level
737.70 kJ/mol  
20
195,200.00 kJ/mol  
1
25th Energy Level
737.70 kJ/mol  
20
762.00 kJ/mol  
15
26th Energy Level
737.70 kJ/mol  
20
762.50 kJ/mol  
15
27th Energy Level
737.70 kJ/mol  
19
762.50 kJ/mol  
14
28th Energy Level
737.70 kJ/mol  
25
762.50 kJ/mol  
20
29th Energy Level
737.70 kJ/mol  
26
762.50 kJ/mol  
20
30th Energy Level
737.70 kJ/mol  
20
762.00 kJ/mol  
15
Electrochemical Equivalent
0.45 g/amp-hr  
99+
0.69 g/amp-hr  
99+
Electron Work Function
3.66 eV  
40
4.70 eV  
15
Other Chemical Properties
Corrosion, Highly Inflammable, Ionization, Solubility  
Corrosion, Ionization, Solubility  
Atomic
Atomic Number
12  
99+
26  
99+
Electron Configuration
[Ne] 3s2  
[Ar] 3d6 4s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Body Centered Cubic (BCC)  
Crystal Lattice
HCP-Crystal-Structure-of-Magnesium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
12  
99+
26  
99+
Number of Neutrons
12  
99+
30  
99+
Number of Electrons
12  
99+
26  
99+
Radius of an Atom
  
  
Atomic Radius
160.00 pm  
29
126.00 pm  
99+
Covalent Radius
141.00 pm  
99+
132.00 pm  
99+
Van der Waals Radius
173.00 pm  
99+
200.00 pm  
35
Atomic Weight
24.31 amu  
99+
55.85 amu  
99+
Atomic Volume
13.97 cm3/mol  
99+
7.10 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Sodium
  
Manganese
  
Next Element
Aluminium
  
Cobalt
  
Valence Electron Potential
40.00 (-eV)  
99+
67.00 (-eV)  
20
Lattice Constant
320.94 pm  
99+
286.65 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.62  
15
1.35  
99+
Mechanical
Density
  
  
Density At Room Temperature
1.74 g/cm3  
99+
7.87 g/cm3  
99+
Density When Liquid (at m.p.)
1.58 g/cm3  
99+
6.98 g/cm3  
99+
Tensile Strength
150.00 MPa  
25
11,000.00 MPa  
1
Viscosity
0.00  
24
0.00  
19
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
30
Vapor Pressure at 2000 K
0.00 (Pa)  
30
36.80 (Pa)  
5
Elasticity properties
  
  
Shear Modulus
17.00 GPa  
99+
82.00 GPa  
11
Bulk Modulus
45.00 GPa  
29
170.00 GPa  
10
Young's Modulus
45.00 GPa  
99+
211.00 GPa  
9
Poisson Ratio
0.29  
15
0.29  
15
Other Mechanical Properties
-  
Ductile, Malleable, Weldable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
1.74  
99+
7.20  
99+
Magnetic Ordering
Paramagnetic  
Ferromagnetic  
Permeability
0.00 H/m  
8
0.01 H/m  
1
Susceptibility
0.00  
33
200,000.00  
1
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
43.90 nΩ·m  
99+
96.10 nΩ·m  
32
Electrical Conductivity
0.23 106/cm Ω  
7
0.10 106/cm Ω  
24
Electron Affinity
0.00 kJ/mol  
99+
15.70 kJ/mol  
40
Thermal
Specific Heat
1.02 J/(kg K)  
4
0.44 J/(kg K)  
13
Molar Heat Capacity
24.87 J/mol·K  
99+
25.10 J/mol·K  
99+
Thermal Conductivity
156.00 W/m·K  
8
80.40 W/m·K  
22
Critical Temperature
923.00 K  
99+
1,811.00 K  
29
Thermal Expansion
24.80 µm/(m·K)  
15
11.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
128.70 kJ/mol  
99+
351.00 kJ/mol  
33
Enthalpy of Fusion
8.95 kJ/mol  
99+
14.90 kJ/mol  
23
Enthalpy of Atomization
148.50 kJ/mol  
99+
414.20 kJ/mol  
24
Standard Molar Entropy
32.70 J/mol.K  
99+
27.30 J/mol.K  
99+
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