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Iridium vs Manganese

Iridium
Manganese
Manganese vs Iridium


Periodic Table
Symbol
Ir  
Mn  
Group Number
9  
9
7  
11
Period Number
6  
4  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7439885  
99+
7439965  
99+
Space Group Name
Fm_ 3m  
I_ 43m  
Space Group Number
225.00  
3
217.00  
5
Facts
Interesting Facts
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  
  • Manganese is an essential trace element in all forms of life.
  • Manganese metal oxidizes very easily, but it does not fuse that easily.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Smithson Tennant  
Johann Gottlieb Gahn  
Discovery
In 1803  
In 1774  
Abundance
  
  
Abundance In Universe
0.00 %  
23
0.00 %  
9
Abundance In Sun
0.00 %  
25
0.00 %  
8
Abundance In Meteorites
0.00 %  
29
0.27 %  
8
Abundance In Earth's Crust
0.00 %  
99+
0.11 %  
8
Abundance In Oceans
-  
0.00 %  
13
Abundance In Humans
0.00 %  
24
0.00 %  
15
Uses
Uses & Benefits
  • Iridium has an anti corrosion properties and it is used in special alloy with Osmium metal and that alloy is used in pen tips and compass bearings.
  
  • This metal is very brittle hence it mostly not used as a pure metal, but its alloys are very useful
  • Its alloy Manganese steel is extremely strong and used in railway tracks, safes, prison bars and riffle barrels.
  
Industrial Uses
Automobile Industry, Electrical Industry, Electronic Industry  
Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.08 Blood/mg dm-3  
14
In Bone
0.00 p.p.m.  
99+
100.00 p.p.m.  
8
Physical
Melting Point
2,410.00 °C  
7
1,245.00 °C  
37
Boiling Point
4,527.00 °C  
10
1,962.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silver  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.50  
5
6.00  
6
Brinell Hardness
1,670.00 MPa  
5
196.00 MPa  
99+
Vickers Hardness
1,760.00 MPa  
8
196.00 MPa  
99+
Speed of Sound
4,825.00 m/s  
17
5,150.00 m/s  
11
Optical Properties
  
  
Refractive Index
2.40  
7
2.00  
15
Reflectivity
78.00 %  
8
70.00 %  
13
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ir  
Mn  
Isotopes
  
  
Known Isotopes
34  
5
21  
18
Electronegativity
  
  
Pauling Electronegativity
2.20  
5
1.55  
26
Sanderson Electronegativity
2.20  
8
2.20  
8
Allred Rochow Electronegativity
1.55  
12
1.60  
10
Mulliken-Jaffe Electronegativity
2.20  
6
1.55  
23
Allen Electronegativity
1.68  
20
1.75  
18
Electropositivity
  
  
Pauling Electropositivity
1.80  
99+
2.45  
29
Ionization Energies
  
  
1st Energy Level
880.00 kJ/mol  
9
717.30 kJ/mol  
30
2nd Energy Level
1,600.00 kJ/mol  
36
1,509.00 kJ/mol  
40
3rd Energy Level
2,256.10 kJ/mol  
99+
3,248.00 kJ/mol  
21
4th Energy Level
880.00 kJ/mol  
99+
4,940.00 kJ/mol  
30
5th Energy Level
8,800.00 kJ/mol  
8
6,990.00 kJ/mol  
29
6th Energy Level
8,800.00 kJ/mol  
25
9,220.00 kJ/mol  
22
7th Energy level
8,800.00 kJ/mol  
22
11,500.00 kJ/mol  
16
8th Energy Level
8,800.00 kJ/mol  
22
18,770.00 kJ/mol  
5
9th Energy Level
8,800.00 kJ/mol  
21
21,400.00 kJ/mol  
6
10th Energy Level
8,800.00 kJ/mol  
23
23,960.00 kJ/mol  
9
11th Energy Level
8,800.00 kJ/mol  
20
27,590.00 kJ/mol  
10
12th Energy Level
8,800.00 kJ/mol  
40
30,330.00 kJ/mol  
32
13th Energy Level
8,800.00 kJ/mol  
15
33,150.00 kJ/mol  
11
14th Energy Level
8,800.00 kJ/mol  
14
38,880.00 kJ/mol  
10
15th Energy Level
88,000.00 kJ/mol  
8
41,987.00 kJ/mol  
99+
16th Energy Level
88,000.00 kJ/mol  
9
109,480.00 kJ/mol  
1
17th Energy Level
880.00 kJ/mol  
26
118,100.00 kJ/mol  
2
18th Energy Level
8,800.00 kJ/mol  
15
127,100.00 kJ/mol  
3
19th Energy Level
880.00 kJ/mol  
24
138,600.00 kJ/mol  
4
20th Energy Level
880.00 kJ/mol  
14
148,500.00 kJ/mol  
6
21st Energy Level
880.00 kJ/mol  
37
158,600.00 kJ/mol  
6
22nd Energy Level
880.00 kJ/mol  
12
172,500.00 kJ/mol  
5
23rd Energy Level
8,800.00 kJ/mol  
7
181,380.00 kJ/mol  
5
24th Energy Level
880.00 kJ/mol  
8
650.90 kJ/mol  
34
25th Energy Level
880.00 kJ/mol  
6
717.30 kJ/mol  
24
26th Energy Level
880.00 kJ/mol  
6
650.90 kJ/mol  
35
27th Energy Level
880.00 kJ/mol  
5
650.90 kJ/mol  
36
28th Energy Level
880.00 kJ/mol  
8
650.90 kJ/mol  
99+
29th Energy Level
880.00 kJ/mol  
9
650.90 kJ/mol  
99+
30th Energy Level
880.00 kJ/mol  
6
650.90 kJ/mol  
38
Electrochemical Equivalent
1.14 g/amp-hr  
99+
0.29 g/amp-hr  
99+
Electron Work Function
4.55 eV  
18
4.10 eV  
32
Other Chemical Properties
Flammable, Ionization, Radioactive Isotopes, Radioactivity  
Ionization, Radioactive Isotopes  
Atomic
Atomic Number
77  
39
25  
99+
Electron Configuration
[Xe] 4f14 5d7 6s2  
[Ar] 3d5 4s2  
Crystal Structure
Face Centered Cubic (FCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Iridium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
74  
99+
25  
99+
Number of Neutrons
110  
28
30  
99+
Number of Electrons
74  
99+
25  
99+
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
127.00 pm  
99+
Covalent Radius
141.00 pm  
99+
139.00 pm  
99+
Van der Waals Radius
202.00 pm  
34
200.00 pm  
35
Atomic Weight
192.22 amu  
34
54.94 amu  
99+
Atomic Volume
9.53 cm3/mol  
99+
1.39 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Osmium
  
Chromium
  
Next Element
Platinum
  
Iron
  
Valence Electron Potential
140.00 (-eV)  
5
220.00 (-eV)  
2
Lattice Constant
383.90 pm  
29
891.25 pm  
1
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.58  
35
1.55  
99+
Mechanical
Density
  
  
Density At Room Temperature
22.56 g/cm3  
10
7.21 g/cm3  
99+
Density When Liquid (at m.p.)
19.00 g/cm3  
13
5.95 g/cm3  
99+
Tensile Strength
2,000.00 MPa  
2
370.00 MPa  
11
Viscosity
0.00  
21
0.00  
2
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
12
Vapor Pressure at 2000 K
0.00 (Pa)  
26
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
210.00 GPa  
2
40.00 GPa  
19
Bulk Modulus
320.00 GPa  
3
120.00 GPa  
14
Young's Modulus
528.00 GPa  
1
198.00 GPa  
13
Poisson Ratio
0.26  
22
0.30  
14
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
21.78  
12
7.21  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
7
Susceptibility
0.00  
5
0.00  
12
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
47.10 nΩ·m  
99+
1.44 nΩ·m  
99+
Electrical Conductivity
0.19 106/cm Ω  
10
0.01 106/cm Ω  
99+
Electron Affinity
151.00 kJ/mol  
4
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.48 J/(kg K)  
11
Molar Heat Capacity
25.10 J/mol·K  
99+
26.32 J/mol·K  
37
Thermal Conductivity
147.00 W/m·K  
10
7.81 W/m·K  
99+
Critical Temperature
2,719.00 K  
8
1,519.00 K  
40
Thermal Expansion
6.40 µm/(m·K)  
99+
21.70 µm/(m·K)  
22
Enthalpy
  
  
Enthalpy of Vaporization
799.10 kJ/mol  
1
219.70 kJ/mol  
99+
Enthalpy of Fusion
35.23 kJ/mol  
1
14.64 kJ/mol  
25
Enthalpy of Atomization
837.00 kJ/mol  
1
280.30 kJ/mol  
99+
Standard Molar Entropy
35.50 J/mol.K  
99+
32.00 J/mol.K  
99+
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