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Tantalum vs Iridium

Tantalum
Iridium
Iridium vs Tantalum


Periodic Table
Symbol
Ta  
Ir  
Group Number
5  
13
9  
9
Period Number
6  
6  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440257  
99+
7439885  
99+
Space Group Name
Im_ 3m  
Fm_ 3m  
Space Group Number
229.00  
2
225.00  
3
Facts
Interesting Facts
  • Tantalum metal is known as corrosion resistance.
  • Tantalum metal can easily fabricated and It is a good conductor of heat and electricity.
  
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Anders Gustaf Ekeberg  
Smithson Tennant  
Discovery
In 1802  
In 1803  
Abundance
  
  
Abundance In Universe
0.00 %  
32
0.00 %  
23
Abundance In Sun
0.00 %  
18
0.00 %  
25
Abundance In Meteorites
0.00 %  
99+
0.00 %  
29
Abundance In Earth's Crust
0.00 %  
37
0.00 %  
99+
Abundance In Oceans
0.00 %  
31
-  
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • Tantalum metal is mainly used in the manufacturing of electron components. Its Oxide layer acts as an insulator.
  • Tantalum metal is also used in surgical transplant like replacement of bone, skull plates and as a woven gauze.
  
  • 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.
  
Industrial Uses
Electrical Industry, Electronic Industry  
Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Low Toxic  
Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
40
In Bone
0.03 p.p.m.  
33
0.00 p.p.m.  
99+
Physical
Melting Point
2,996.00 °C  
4
2,410.00 °C  
7
Boiling Point
5,425.00 °C  
4
4,527.00 °C  
10
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gray Blue  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.50  
5
6.50  
5
Brinell Hardness
440.00 MPa  
33
1,670.00 MPa  
5
Vickers Hardness
870.00 MPa  
19
1,760.00 MPa  
8
Speed of Sound
3,400.00 m/s  
33
4,825.00 m/s  
17
Optical Properties
  
  
Refractive Index
2.15  
10
2.40  
7
Reflectivity
78.00 %  
8
78.00 %  
8
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ta  
Ir  
Isotopes
  
  
Known Isotopes
31  
8
34  
5
Electronegativity
  
  
Pauling Electronegativity
1.50  
28
2.20  
5
Sanderson Electronegativity
1.50  
18
2.20  
8
Allred Rochow Electronegativity
1.33  
23
1.55  
12
Mulliken-Jaffe Electronegativity
1.50  
26
2.20  
6
Allen Electronegativity
1.34  
38
1.68  
20
Electropositivity
  
  
Pauling Electropositivity
2.50  
27
1.80  
99+
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol  
18
880.00 kJ/mol  
9
2nd Energy Level
1,500.00 kJ/mol  
99+
1,600.00 kJ/mol  
36
3rd Energy Level
761.00 kJ/mol  
99+
2,256.10 kJ/mol  
99+
4th Energy Level
7,610.00 kJ/mol  
9
880.00 kJ/mol  
99+
5th Energy Level
7,610.00 kJ/mol  
19
8,800.00 kJ/mol  
8
6th Energy Level
7,610.00 kJ/mol  
36
8,800.00 kJ/mol  
25
7th Energy level
7,610.00 kJ/mol  
30
8,800.00 kJ/mol  
22
8th Energy Level
7,610.00 kJ/mol  
30
8,800.00 kJ/mol  
22
9th Energy Level
7,610.00 kJ/mol  
26
8,800.00 kJ/mol  
21
10th Energy Level
7,610.00 kJ/mol  
30
8,800.00 kJ/mol  
23
11th Energy Level
7,610.00 kJ/mol  
29
8,800.00 kJ/mol  
20
12th Energy Level
7,610.00 kJ/mol  
99+
8,800.00 kJ/mol  
40
13th Energy Level
7,610.00 kJ/mol  
22
8,800.00 kJ/mol  
15
14th Energy Level
7,610.00 kJ/mol  
19
8,800.00 kJ/mol  
14
15th Energy Level
76,100.00 kJ/mol  
19
88,000.00 kJ/mol  
8
16th Energy Level
76,100.00 kJ/mol  
14
88,000.00 kJ/mol  
9
17th Energy Level
761.00 kJ/mol  
35
880.00 kJ/mol  
26
18th Energy Level
7,610.00 kJ/mol  
25
8,800.00 kJ/mol  
15
19th Energy Level
761.00 kJ/mol  
32
880.00 kJ/mol  
24
20th Energy Level
761.00 kJ/mol  
26
880.00 kJ/mol  
14
21st Energy Level
761.00 kJ/mol  
99+
880.00 kJ/mol  
37
22nd Energy Level
761.00 kJ/mol  
20
880.00 kJ/mol  
12
23rd Energy Level
761.00 kJ/mol  
99+
8,800.00 kJ/mol  
7
24th Energy Level
761.00 kJ/mol  
16
880.00 kJ/mol  
8
25th Energy Level
761.00 kJ/mol  
16
880.00 kJ/mol  
6
26th Energy Level
761.00 kJ/mol  
16
880.00 kJ/mol  
6
27th Energy Level
761.00 kJ/mol  
15
880.00 kJ/mol  
5
28th Energy Level
761.00 kJ/mol  
21
880.00 kJ/mol  
8
29th Energy Level
761.00 kJ/mol  
22
880.00 kJ/mol  
9
30th Energy Level
761.00 kJ/mol  
16
880.00 kJ/mol  
6
Electrochemical Equivalent
1.35 g/amp-hr  
99+
1.14 g/amp-hr  
99+
Electron Work Function
4.25 eV  
28
4.55 eV  
18
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Flammable, Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
73  
99+
77  
39
Electron Configuration
[Xe] 4f14 5d3 6s2  
[Xe] 4f14 5d7 6s2  
Crystal Structure
Body Centered Cubic (BCC)  
Face Centered Cubic (FCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
FCC-Crystal-Structure-of-Iridium.jpg#100  
Atom
  
  
Number of Protons
73  
99+
74  
99+
Number of Neutrons
108  
29
110  
28
Number of Electrons
73  
99+
74  
99+
Radius of an Atom
  
  
Atomic Radius
146.00 pm  
37
136.00 pm  
99+
Covalent Radius
170.00 pm  
27
141.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
202.00 pm  
34
Atomic Weight
180.95 amu  
38
192.22 amu  
34
Atomic Volume
10.90 cm3/mol  
99+
9.53 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Hafnium
  
Osmium
  
Next Element
Tungsten
  
Platinum
  
Valence Electron Potential
110.00 (-eV)  
7
140.00 (-eV)  
5
Lattice Constant
330.13 pm  
99+
383.90 pm  
29
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.41  
99+
1.58  
35
Mechanical
Density
  
  
Density At Room Temperature
16.69 g/cm3  
18
22.56 g/cm3  
10
Density When Liquid (at m.p.)
15.00 g/cm3  
23
19.00 g/cm3  
13
Tensile Strength
180.00 MPa  
20
2,000.00 MPa  
2
Viscosity
0.00  
25
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
26
Elasticity properties
  
  
Shear Modulus
69.00 GPa  
13
210.00 GPa  
2
Bulk Modulus
200.00 GPa  
8
320.00 GPa  
3
Young's Modulus
186.00 GPa  
14
528.00 GPa  
1
Poisson Ratio
0.34  
10
0.26  
22
Other Mechanical Properties
Ductile  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
16.65  
20
21.78  
12
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
16
Susceptibility
0.00  
27
0.00  
5
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
131.00 nΩ·m  
25
47.10 nΩ·m  
99+
Electrical Conductivity
0.08 106/cm Ω  
32
0.19 106/cm Ω  
10
Electron Affinity
31.00 kJ/mol  
35
151.00 kJ/mol  
4
Thermal
Specific Heat
0.14 J/(kg K)  
38
0.13 J/(kg K)  
40
Molar Heat Capacity
25.36 J/mol·K  
99+
25.10 J/mol·K  
99+
Thermal Conductivity
57.50 W/m·K  
27
147.00 W/m·K  
10
Critical Temperature
3,290.00 K  
4
2,719.00 K  
8
Thermal Expansion
6.30 µm/(m·K)  
99+
6.40 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
753.10 kJ/mol  
2
799.10 kJ/mol  
1
Enthalpy of Fusion
31.40 kJ/mol  
3
35.23 kJ/mol  
1
Enthalpy of Atomization
782.00 kJ/mol  
3
837.00 kJ/mol  
1
Standard Molar Entropy
41.50 J/mol.K  
99+
35.50 J/mol.K  
99+
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