Home
 Compare Metals

Iridium vs Lead

Iridium
Lead
Lead vs Iridium


Periodic Table
Symbol
Ir  
Pb  
Group Number
9  
9
14  
4
Period Number
6  
6  
Block
d block  
p block  
Element Family
Transition Metal  
Post-​Transition  
CAS Number
7439885  
99+
7439921  
99+
Space Group Name
Fm_ 3m  
Fm_ 3m  
Space Group Number
225.00  
3
225.00  
3
Facts
Interesting Facts
  • Iridium element occurs as natural alloys of Platinum and Osmium.
  • Iridium element is known as the most corrosion resistance metal .
  
  • Galena mineral contains almost 87% of Lead metal in it, Galena is sulfide mineral.
  • The best available source of Lead metal today is by recycling automobile batteries.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Smithson Tennant  
-  
Discovery
In 1803  
In Middle Easterns (7000 BCE)  
Abundance
  
  
Abundance In Universe
0.00 %  
23
0.00 %  
17
Abundance In Sun
0.00 %  
25
0.00 %  
18
Abundance In Meteorites
0.00 %  
29
0.00 %  
23
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
26
Abundance In Oceans
-  
0.00 %  
22
Abundance In Humans
0.00 %  
24
0.00 %  
9
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.
  
  • It is also used in insecticides, hair dyes and as an anti-knocking additive for petrol. But all these are banned by the government as Lead metal is known for detrimental to health.
  
Industrial Uses
Automobile Industry, Electrical Industry, Electronic Industry  
Chemical Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
Surgical Instruments Manufacturing  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.21 Blood/mg dm-3  
11
In Bone
0.00 p.p.m.  
99+
30.00 p.p.m.  
10
Physical
Melting Point
2,410.00 °C  
7
327.50 °C  
99+
Boiling Point
4,527.00 °C  
10
1,740.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.50  
5
1.50  
19
Brinell Hardness
1,670.00 MPa  
5
38.00 MPa  
99+
Vickers Hardness
1,760.00 MPa  
8
38.00 MPa  
99+
Speed of Sound
4,825.00 m/s  
17
1,190.00 m/s  
99+
Optical Properties
  
  
Refractive Index
2.40  
7
2.02  
14
Reflectivity
78.00 %  
8
5.00 %  
39
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ir  
Pb  
Isotopes
  
  
Known Isotopes
34  
5
35  
4
Electronegativity
  
  
Pauling Electronegativity
2.20  
5
1.87  
14
Sanderson Electronegativity
2.20  
8
2.29  
4
Allred Rochow Electronegativity
1.55  
12
1.55  
12
Mulliken-Jaffe Electronegativity
2.20  
6
2.41  
2
Allen Electronegativity
1.68  
20
1.85  
11
Electropositivity
  
  
Pauling Electropositivity
1.80  
99+
1.67  
99+
Ionization Energies
  
  
1st Energy Level
880.00 kJ/mol  
9
715.60 kJ/mol  
31
2nd Energy Level
1,600.00 kJ/mol  
36
1,450.50 kJ/mol  
99+
3rd Energy Level
2,256.10 kJ/mol  
99+
3,081.50 kJ/mol  
23
4th Energy Level
880.00 kJ/mol  
99+
4,083.00 kJ/mol  
99+
5th Energy Level
8,800.00 kJ/mol  
8
6,640.00 kJ/mol  
32
6th Energy Level
8,800.00 kJ/mol  
25
7,150.00 kJ/mol  
99+
7th Energy level
8,800.00 kJ/mol  
22
7,156.00 kJ/mol  
36
8th Energy Level
8,800.00 kJ/mol  
22
7,150.00 kJ/mol  
32
9th Energy Level
8,800.00 kJ/mol  
21
7,156.00 kJ/mol  
30
10th Energy Level
8,800.00 kJ/mol  
23
7,156.00 kJ/mol  
34
11th Energy Level
8,800.00 kJ/mol  
20
7,156.00 kJ/mol  
33
12th Energy Level
8,800.00 kJ/mol  
40
7,150.00 kJ/mol  
99+
13th Energy Level
8,800.00 kJ/mol  
15
7,150.00 kJ/mol  
28
14th Energy Level
8,800.00 kJ/mol  
14
715.60 kJ/mol  
99+
15th Energy Level
88,000.00 kJ/mol  
8
71,500.00 kJ/mol  
24
16th Energy Level
88,000.00 kJ/mol  
9
71,500.00 kJ/mol  
19
17th Energy Level
880.00 kJ/mol  
26
715.60 kJ/mol  
40
18th Energy Level
8,800.00 kJ/mol  
15
7,150.00 kJ/mol  
30
19th Energy Level
880.00 kJ/mol  
24
715.60 kJ/mol  
37
20th Energy Level
880.00 kJ/mol  
14
715.00 kJ/mol  
31
21st Energy Level
880.00 kJ/mol  
37
715.60 kJ/mol  
99+
22nd Energy Level
880.00 kJ/mol  
12
715.00 kJ/mol  
25
23rd Energy Level
8,800.00 kJ/mol  
7
715.60 kJ/mol  
99+
24th Energy Level
880.00 kJ/mol  
8
715.60 kJ/mol  
24
25th Energy Level
880.00 kJ/mol  
6
715.00 kJ/mol  
25
26th Energy Level
880.00 kJ/mol  
6
715.60 kJ/mol  
24
27th Energy Level
880.00 kJ/mol  
5
715.60 kJ/mol  
23
28th Energy Level
880.00 kJ/mol  
8
715.60 kJ/mol  
29
29th Energy Level
880.00 kJ/mol  
9
715.60 kJ/mol  
30
30th Energy Level
880.00 kJ/mol  
6
715.00 kJ/mol  
24
Electrochemical Equivalent
1.14 g/amp-hr  
99+
3.87 g/amp-hr  
9
Electron Work Function
4.55 eV  
18
4.25 eV  
28
Other Chemical Properties
Flammable, Ionization, Radioactive Isotopes, Radioactivity  
Anti Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
77  
39
82  
34
Electron Configuration
[Xe] 4f14 5d7 6s2  
[Xe] 4f14 5d10 6s2 6p2  
Crystal Structure
Face Centered Cubic (FCC)  
Face Centered Cubic (FCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Iridium.jpg#100  
FCC-Crystal-Structure-of-Lead.jpg#100  
Atom
  
  
Number of Protons
74  
99+
82  
34
Number of Neutrons
110  
28
125  
20
Number of Electrons
74  
99+
82  
34
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
175.00 pm  
21
Covalent Radius
141.00 pm  
99+
146.00 pm  
40
Van der Waals Radius
202.00 pm  
34
202.00 pm  
34
Atomic Weight
192.22 amu  
34
207.20 amu  
30
Atomic Volume
9.53 cm3/mol  
99+
18.17 cm3/mol  
39
Adjacent Atomic Numbers
  
  
Previous Element
Osmium
  
Thallium
  
Next Element
Platinum
  
Bismuth
  
Valence Electron Potential
140.00 (-eV)  
5
24.20 (-eV)  
99+
Lattice Constant
383.90 pm  
29
495.08 pm  
18
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.58  
35
1.51  
99+
Mechanical
Density
  
  
Density At Room Temperature
22.56 g/cm3  
10
11.34 g/cm3  
35
Density When Liquid (at m.p.)
19.00 g/cm3  
13
10.66 g/cm3  
36
Tensile Strength
2,000.00 MPa  
2
12.00 MPa  
99+
Viscosity
0.00  
21
0.00  
29
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
1.64 (Pa)  
7
Vapor Pressure at 2000 K
0.00 (Pa)  
26
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
210.00 GPa  
2
5.60 GPa  
99+
Bulk Modulus
320.00 GPa  
3
46.00 GPa  
28
Young's Modulus
528.00 GPa  
1
16.00 GPa  
99+
Poisson Ratio
0.26  
22
0.44  
3
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
21.78  
12
11.35  
38
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
12
Susceptibility
0.00  
5
0.00  
30
Electrical Properties
  
  
Electrical Property
Conductor  
Poor Conductor  
Resistivity
47.10 nΩ·m  
99+
208.00 nΩ·m  
16
Electrical Conductivity
0.19 106/cm Ω  
10
0.05 106/cm Ω  
99+
Electron Affinity
151.00 kJ/mol  
4
35.10 kJ/mol  
33
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.13 J/(kg K)  
40
Molar Heat Capacity
25.10 J/mol·K  
99+
26.65 J/mol·K  
34
Thermal Conductivity
147.00 W/m·K  
10
35.30 W/m·K  
39
Critical Temperature
2,719.00 K  
8
600.61 K  
99+
Thermal Expansion
6.40 µm/(m·K)  
99+
28.90 µm/(m·K)  
13
Enthalpy
  
  
Enthalpy of Vaporization
799.10 kJ/mol  
1
179.40 kJ/mol  
99+
Enthalpy of Fusion
35.23 kJ/mol  
1
4.77 kJ/mol  
99+
Enthalpy of Atomization
837.00 kJ/mol  
1
194.60 kJ/mol  
99+
Standard Molar Entropy
35.50 J/mol.K  
99+
64.80 J/mol.K  
18
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!