Home
 Compare Metals

Iridium vs Tantalum

Iridium
Tantalum
Tantalum vs Iridium


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

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

» More Compare Transition Metals
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!