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Iridium Tungsten Comparison

Iridium
Tungsten
Tungsten Iridium comparison


Periodic Table
Symbol
Ir  
W  
Group Number
9  
9
6  
12
Period Number
6  
6  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7439885  
99+
7440337  
99+
Space Group Name
Fm_ 3m  
Im_ 3m  
Space Group Number
225.00  
3
229.00  
2
Facts
Interesting Facts
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Smithson Tennant  
-  
Discovery
In 1803  
In 1781  
Abundance
  
  
Abundance In Universe
0.00 %  
23
0.00 %  
28
Abundance In Sun
0.00 %  
25
0.00 %  
23
Abundance In Meteorites
0.00 %  
29
0.00 %  
39
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
39
Abundance In Oceans
-  
0.00 %  
18
Abundance In Humans
0.00 %  
24
0.00 %  
24
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.
  
  • Tungsten and its alloys are used in high-temperature applications like welding electrodes, high-temperature furnace, etc.
  • Tungsten carbide is very hard and used in metal working, mining and petroleum industry.
  
Industrial Uses
Automobile Industry, Electrical Industry, Electronic Industry  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Non Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
31
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
40
Physical
Melting Point
2,410.00 °C  
7
3,410.00 °C  
1
Boiling Point
4,527.00 °C  
10
5,660.00 °C  
1
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Grayish White  
Luster
Metallic  
Lustrous  
Hardness
  
  
Mohs Hardness
6.50  
5
7.50  
2
Brinell Hardness
1,670.00 MPa  
5
2,000.00 MPa  
4
Vickers Hardness
1,760.00 MPa  
8
3,430.00 MPa  
3
Speed of Sound
4,825.00 m/s  
17
4,620.00 m/s  
20
Optical Properties
  
  
Refractive Index
2.40  
7
2.10  
11
Reflectivity
78.00 %  
8
62.00 %  
21
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ir  
W  
Isotopes
  
  
Known Isotopes
34  
5
33  
6
Electronegativity
  
  
Pauling Electronegativity
2.20  
5
2.36  
3
Sanderson Electronegativity
2.20  
8
0.98  
99+
Allred Rochow Electronegativity
1.55  
12
1.40  
20
Mulliken-Jaffe Electronegativity
2.20  
6
2.36  
3
Allen Electronegativity
1.68  
20
1.47  
33
Electropositivity
  
  
Pauling Electropositivity
1.80  
99+
1.64  
99+
Ionization Energies
  
  
1st Energy Level
880.00 kJ/mol  
9
770.00 kJ/mol  
16
2nd Energy Level
1,600.00 kJ/mol  
36
1,700.00 kJ/mol  
30
3rd Energy Level
2,256.10 kJ/mol  
99+
2,045.40 kJ/mol  
99+
4th Energy Level
880.00 kJ/mol  
99+
7,700.00 kJ/mol  
8
5th Energy Level
8,800.00 kJ/mol  
8
7,700.00 kJ/mol  
17
6th Energy Level
8,800.00 kJ/mol  
25
7,700.00 kJ/mol  
35
7th Energy level
8,800.00 kJ/mol  
22
7,700.00 kJ/mol  
29
8th Energy Level
8,800.00 kJ/mol  
22
7,700.00 kJ/mol  
29
9th Energy Level
8,800.00 kJ/mol  
21
7,700.00 kJ/mol  
25
10th Energy Level
8,800.00 kJ/mol  
23
7,700.00 kJ/mol  
29
11th Energy Level
8,800.00 kJ/mol  
20
7,700.00 kJ/mol  
28
12th Energy Level
8,800.00 kJ/mol  
40
7,700.00 kJ/mol  
99+
13th Energy Level
8,800.00 kJ/mol  
15
7,700.00 kJ/mol  
21
14th Energy Level
8,800.00 kJ/mol  
14
770.00 kJ/mol  
99+
15th Energy Level
88,000.00 kJ/mol  
8
77,000.00 kJ/mol  
18
16th Energy Level
88,000.00 kJ/mol  
9
77,000.00 kJ/mol  
13
17th Energy Level
880.00 kJ/mol  
26
770.00 kJ/mol  
34
18th Energy Level
8,800.00 kJ/mol  
15
7,700.00 kJ/mol  
24
19th Energy Level
880.00 kJ/mol  
24
770.00 kJ/mol  
31
20th Energy Level
880.00 kJ/mol  
14
770.00 kJ/mol  
25
21st Energy Level
880.00 kJ/mol  
37
770.00 kJ/mol  
99+
22nd Energy Level
880.00 kJ/mol  
12
770.00 kJ/mol  
19
23rd Energy Level
8,800.00 kJ/mol  
7
770.00 kJ/mol  
99+
24th Energy Level
880.00 kJ/mol  
8
770.00 kJ/mol  
15
25th Energy Level
880.00 kJ/mol  
6
770.00 kJ/mol  
14
26th Energy Level
880.00 kJ/mol  
6
770.00 kJ/mol  
14
27th Energy Level
880.00 kJ/mol  
5
770.00 kJ/mol  
13
28th Energy Level
880.00 kJ/mol  
8
770.00 kJ/mol  
19
29th Energy Level
880.00 kJ/mol  
9
770.00 kJ/mol  
19
30th Energy Level
880.00 kJ/mol  
6
770.00 kJ/mol  
14
Electrochemical Equivalent
1.14 g/amp-hr  
99+
1.14 g/amp-hr  
99+
Electron Work Function
4.55 eV  
18
4.55 eV  
18
Other Chemical Properties
Flammable, Ionization, Radioactive Isotopes, Radioactivity  
Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
77  
39
74  
99+
Electron Configuration
[Xe] 4f14 5d7 6s2  
[Xe] 4f14 5d4 6s2  
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+
74  
99+
Number of Neutrons
110  
28
110  
28
Number of Electrons
74  
99+
74  
99+
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
139.00 pm  
99+
Covalent Radius
141.00 pm  
99+
162.00 pm  
31
Van der Waals Radius
202.00 pm  
34
200.00 pm  
35
Atomic Weight
192.22 amu  
34
183.84 amu  
37
Atomic Volume
9.53 cm3/mol  
99+
9.53 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Osmium
  
Tantalum
  
Next Element
Platinum
  
Rhenium
  
Valence Electron Potential
140.00 (-eV)  
5
140.00 (-eV)  
5
Lattice Constant
383.90 pm  
29
316.52 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.58  
35
1.29  
99+
Mechanical
Density
  
  
Density At Room Temperature
22.56 g/cm3  
10
19.25 g/cm3  
16
Density When Liquid (at m.p.)
19.00 g/cm3  
13
17.60 g/cm3  
15
Tensile Strength
2,000.00 MPa  
2
370.00 MPa  
11
Viscosity
0.00  
21
0.00  
1
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
26
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
210.00 GPa  
2
161.00 GPa  
5
Bulk Modulus
320.00 GPa  
3
310.00 GPa  
4
Young's Modulus
528.00 GPa  
1
411.00 GPa  
4
Poisson Ratio
0.26  
22
0.28  
17
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
21.78  
12
19.22  
18
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
17
Susceptibility
0.00  
5
0.00  
23
Electrical Properties
  
  
Electrical Property
Conductor  
Superconductor  
Resistivity
47.10 nΩ·m  
99+
52.80 nΩ·m  
99+
Electrical Conductivity
0.19 106/cm Ω  
10
0.19 106/cm Ω  
10
Electron Affinity
151.00 kJ/mol  
4
78.60 kJ/mol  
15
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.13 J/(kg K)  
40
Molar Heat Capacity
25.10 J/mol·K  
99+
24.27 J/mol·K  
99+
Thermal Conductivity
147.00 W/m·K  
10
173.00 W/m·K  
7
Critical Temperature
2,719.00 K  
8
3,695.00 K  
1
Thermal Expansion
6.40 µm/(m·K)  
99+
4.50 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
799.10 kJ/mol  
1
799.10 kJ/mol  
1
Enthalpy of Fusion
35.23 kJ/mol  
1
35.23 kJ/mol  
1
Enthalpy of Atomization
837.00 kJ/mol  
1
837.00 kJ/mol  
1
Standard Molar Entropy
35.50 J/mol.K  
99+
32.60 J/mol.K  
99+
Summary >>
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