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Iridium
Iridium

Cobalt
Cobalt



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Iridium vs Cobalt

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1 Periodic Table
1.1 Symbol
Ir
Co
1.2 Group Number
99
Gadolinium
0 17
1.3 Period Number
64
Lithium
2 7
1.4 Block
d block
d block
1.5 Element Family
Transition Metal
Transition Metal
1.6 CAS Number
74398857440484
Aluminium
7429905 54386242
1.7 Space Group Name
Fm_ 3m
P63/mmc
1.8 Space Group Number
225.00194.00
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  • The main source of Cobalt is as a by-product of copper and nickel metal mining.
  • Cobalt metal can be obtained from other elements like Oxygen, Sulfur and Arsenic.
  • It s also used in electroplating process as it exhibits anti cession properties.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Compounds, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Smithson Tennant
Georg Brandt
2.3.2 Discovery
In 1803
In 1732
2.4 Abundance
2.4.1 Abundance In Universe
2 * 10-7 %3 * 10-4 %
Thallium
5E-09 0.11
2.4.2 Abundance In Sun
~0.0000002 %~0.0004 %
Beryllium
1E-08 0.1
2.4.3 Abundance In Meteorites
0.00 %0.06 %
Gold
1.7E-07 22
2.4.4 Abundance In Earth's Crust
0.00 %0.00 %
Radium
9.9E-12 8.1
2.4.5 Abundance In Oceans
NA0.00 %
Protactinium
2E-23 1.1
2.4.6 Abundance In Humans
NA0.00 %
Radium
1E-13 1.4
3 Uses
3.1 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.
  • Its alloys with aluminum and nickel are used to make powerful magnets.
  • Few other alloys exhibit high-temperature strength and hence they are used in Turbines of Jet and Gas engine.
3.1.1 Industrial Uses
Automobile Industry, Electrical Industry, Electronic Industry
Chemical Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
NA
Pharmaceutical Industry
3.1.3 Other Uses
Alloys
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Toxic
Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
NA0.04 Blood/mg dm-3
Plutonium
0 1970
3.2.4 In Bone
NA0.04 p.p.m.
Plutonium
0 170000
4 Physical
4.1 Melting Point
2,410.00 °C1,495.00 °C
Francium
27 3410
4.2 Boiling Point
4,527.00 °C2,870.00 °C
Flerovium
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silvery White
Gray
4.3.3 Luster
Metallic
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
6.505.00
Cesium
0.2 8.5
4.4.2 Brinell Hardness
1,670.00 MPa470.00 MPa
Cesium
0.14 3490
4.4.3 Vickers Hardness
1,760.00 MPa1,043.00 MPa
Palladium
121 3430
1.2 Speed of Sound
4,825.00 m/s4,720.00 m/s
Thallium
818 16200
1.4 Optical Properties
1.4.1 Refractive Index
NANA
Mercury
1.000933 1.7229
1.4.2 Reflectivity
78.00 %67.00 %
Molybdenum
58 97
1.6 Allotropes
1.6.1 α Allotropes
Not Available
α-Cobalt
1.6.2 β Allotropes
Not Available
β-Cobalt
1.6.3 γ Allotropes
Not Available
Not Available
2 Chemical
2.1 Chemical Formula
Ir
Co
2.2 Isotopes
2.2.1 Known Isotopes
3426
Tennessine
0 38
2.3 Electronegativity
2.3.1 Pauling Electronegativity
2.201.88
Francium
0.7 2.54
2.4.1 Sanderson Electronegativity
NA2.56
Cesium
0.22 2.56
2.5.1 Allred Rochow Electronegativity
1.551.70
Cesium
0.86 1.82
2.5.2 Mulliken-Jaffe Electronegativity
NANA
Cesium
0.62 2.48
2.6.2 Allen Electronegativity
1.681.84
Cesium
0.659 2.7
2.7 Electropositivity
2.7.1 Pauling Electropositivity
1.802.12
Gold
1.46 3.3
2.8 Ionization Energies
2.8.1 1st Energy Level
880.00 kJ/mol760.40 kJ/mol
Cesium
375.7 26130
2.8.3 2nd Energy Level
1,600.00 kJ/mol1,648.00 kJ/mol
Ruthenium
710.2162 28750
2.9.1 3rd Energy Level
NA3,232.00 kJ/mol
Osmium
1600 34230
2.9.2 4th Energy Level
NA4,950.00 kJ/mol
Thorium
2780 37066
2.9.3 5th Energy Level
NA7,670.00 kJ/mol
Dubnium
4305.2 97510
2.9.4 6th Energy Level
NA9,840.00 kJ/mol
Seaborgium
5715.8 105800
2.9.5 7th Energy level
NA12,440.00 kJ/mol
Bohrium
7226.8 114300
2.9.6 8th Energy Level
NA15,230.00 kJ/mol
Hassium
8857.4 125300
2.9.7 9th Energy Level
NA17,959.00 kJ/mol
Yttrium
14110 134700
2.9.8 10th Energy Level
NA26,570.00 kJ/mol
Strontium
17100 144300
2.9.9 11th Energy Level
NA29,400.00 kJ/mol
Yttrium
19900 169988
2.9.10 12th Energy Level
NA32,400.00 kJ/mol
Molybdenum
22219 189368
2.9.11 13th Energy Level
NA36,600.00 kJ/mol
Molybdenum
26930 76015
2.9.12 14th Energy Level
NA39,700.00 kJ/mol
Molybdenum
29196 86450
2.9.13 15th Energy Level
NA42,800.00 kJ/mol
Manganese
41987 97510
2.9.14 16th Energy Level
NA49,396.00 kJ/mol
Iron
47206 109480
2.9.15 17th Energy Level
NA52,737.00 kJ/mol
Copper
52737 122200
2.9.16 18th Energy Level
NA134,810.00 kJ/mol
Nickel
58570 134810
2.9.17 19th Energy Level
NA145,170.00 kJ/mol
Copper
64702 148700
2.9.18 20th Energy Level
NA154,700.00 kJ/mol
Molybdenum
80400 171200
2.9.19 21st Energy Level
NA167,400.00 kJ/mol
Molybdenum
87000 179100
2.9.20 22nd Energy Level
NA178,100.00 kJ/mol
Molybdenum
93400 184900
2.9.21 23rd Energy Level
NA189,300.00 kJ/mol
Molybdenum
98420 198800
2.9.22 24th Energy Level
NANA
Molybdenum
104400 195200
2.9.23 25th Energy Level
NANA
Molybdenum
121900 121900
2.9.24 26th Energy Level
NANA
Molybdenum
127700 127700
2.9.25 27th Energy Level
NANA
Molybdenum
133800 133800
2.9.26 28th Energy Level
NANA
Molybdenum
139800 139800
2.9.27 29th Energy Level
NANA
Molybdenum
148100 148100
2.9.28 30th Energy Level
NANA
Molybdenum
154500 154500
2.10 Electrochemical Equivalent
1.14 g/amp-hr1.10 g/amp-hr
Beryllium
0.16812 8.3209
2.11 Electron Work Function
4.55 eV5.00 eV
Cesium
2.14 5.65
2.12 Other Chemical Properties
Flammable, Ionization, Radioactive Isotopes, Radioactivity
Chemical Stability, Ionization
3 Atomic
3.1 Atomic Number
7722
Lithium
3 117
3.2 Electron Configuration
[Xe] 4f14 5d7 6s2
[Ar] 3d2 4s2
3.3 Crystal Structure
Face Centered Cubic (FCC)
Hexagonal Close Packed (HCP)
3.3.1 Crystal Lattice
3.4 Atom
3.4.1 Number of Protons
7422
Lithium
3 117
3.4.2 Number of Neutrons
11026
Lithium
4 184
3.4.3 Number of Electrons
7422
Lithium
3 117
3.5 Radius of an Atom
3.5.1 Atomic Radius
136.00 pm147.00 pm
Beryllium
112 265
3.5.2 Covalent Radius
141.00 pm160.00 pm
Beryllium
96 260
3.5.3 Van der Waals Radius
202.00 pm200.00 pm
Zinc
139 348
3.6 Atomic Weight
192.22 amu47.87 amu
Lithium
6.94 294
3.7 Atomic Volume
9.53 cm3/mol10.64 cm3/mol
Manganese
1.39 71.07
3.8 Adjacent Atomic Numbers
3.8.1 Previous Element
3.8.2 Next Element
3.9 Valence Electron Potential
140.00 (-eV)95.20 (-eV)
Francium
8 392.42
3.10 Lattice Constant
383.90 pm295.08 pm
Beryllium
228.58 891.25
3.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
3.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
4 Mechanical
4.1 Density
4.1.1 Density At Room Temperature
22.56 g/cm34.51 g/cm3
Lithium
0.534 40.7
4.1.2 Density When Liquid (at m.p.)
19.00 g/cm34.11 g/cm3
Lithium
0.512 20
4.2 Tensile Strength
2,000.00 MPa434.00 MPa
Indium
2.5 11000
4.3 Viscosity
NANA
Mercury
0.001526 0.001526
4.4 Vapor Pressure
4.4.1 Vapor Pressure at 1000 K
NANA
Cerium
2.47E-11 121
4.4.2 Vapor Pressure at 2000 K
0.00 (Pa)0.98 (Pa)
Tungsten
2.62E-10 774
4.5 Elasticity properties
4.5.1 Shear Modulus
210.00 GPa44.00 GPa
Potassium
1.3 222
4.5.2 Bulk Modulus
320.00 GPa110.00 GPa
Cesium
1.6 462
4.5.3 Young's Modulus
528.00 GPa116.00 GPa
Cesium
1.7 528
4.6 Poisson Ratio
0.260.32
Beryllium
0.032 0.47
4.7 Other Mechanical Properties
NA
Ductile
5 Magnetic
5.1 Magnetic Characteristics
5.1.1 Specific Gravity
21.784,500.00
Lithium
0.53 4500
5.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
5.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
5.1.4 Susceptibility
NANA
Bismuth
-0.000166 200000
5.2 Electrical Properties
5.2.1 Electrical Property
Conductor
Poor Conductor
5.2.2 Resistivity
47.10 nΩ·m420.00 nΩ·m
Thallium
0.18 961
5.2.3 Electrical Conductivity
0.19 106/cm Ω0.02 106/cm Ω
Plutonium
0.00666 0.63
5.2.4 Electron Affinity
151.00 kJ/mol7.60 kJ/mol
Mercury
0 222.8
6 Thermal
6.1 Specific Heat
0.13 J/(kg K)0.52 J/(kg K)
Americium
0.11 3.6
6.2 Molar Heat Capacity
25.10 J/mol·K25.06 J/mol·K
Beryllium
16.443 62.7
6.3 Thermal Conductivity
147.00 W/m·K21.90 W/m·K
Neptunium
6.3 429
6.4 Critical Temperature
NANA
Ytterbium
26.3 3223
6.5 Thermal Expansion
6.40 µm/(m·K)8.60 µm/(m·K)
Tungsten
4.5 97
6.6 Enthalpy
6.6.1 Enthalpy of Vaporization
799.10 kJ/mol429.00 kJ/mol
Zinc
7.32 799.1
6.6.2 Enthalpy of Fusion
35.23 kJ/mol15.48 kJ/mol
Cesium
2.1 35.23
6.6.3 Enthalpy of Atomization
837.00 kJ/mol468.60 kJ/mol
Mercury
61.5 837
6.7 Standard Molar Entropy
35.50 J/mol.K27.30 J/mol.K
Beryllium
9.5 198.1