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Bismuth vs Iridium

Bismuth
Iridium
Iridium vs Bismuth


Periodic Table
Symbol
Bi   
Ir   
Group Number
15   
3
9   
9
Period Number
6   
6   
Block
p block   
d block   
Element Family
Post-​Transition   
Transition Metal   
CAS Number
7440699   
22
7439885   
99+
Space Group Name
C12/m1   
Fm_ 3m   
Space Group Number
12.00   
12
225.00   
2
Facts
Interesting Facts
  • Bismuth metal is soluble and reacts with concentrated nitric acid.
  • It oxides are used as a yellow pigment in paint. Bismuth chloride oxide BiClO gives a pearly texture to cosmetics.
  
  • 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
Claude François Geoffroy   
Smithson Tennant   
Discovery
In 1753   
In 1803   
Abundance
  
  
Abundance In Universe
7 * 10-8 %   
25
2 * 10-7 %   
22
Abundance In Sun
~0.000006 %   
14
~0.0000002 %   
25
Abundance In Meteorites
0.00 %   
99+
0.00 %   
29
Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
99+
Abundance In Oceans
0.00 %   
24
Not Available   
Uses
Uses & Benefits
  • Tin and bismuth alloys have a very low melting point and hence it is used in fire detector and the fire extinguishers. It also used in electric solders and fuses.
  
  • 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
Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Automobile Industry, Electrical Industry, Electronic Industry   
Medical Uses
Pharmaceutical Industry   
NA   
Other Uses
Alloys   
Alloys   
Biological Properties
  
  
Toxicity
Low Toxic   
Toxic   
Present in Human Body
Yes   
Yes   
In Blood
0.02 Blood/mg dm-3   
20
Not Available   
In Bone
0.20 p.p.m.   
22
Not Available   
Physical Properties
Melting Point
271.30 °C   
99+
2,410.00 °C   
7
Boiling Point
1,560.00 °C   
99+
4,527.00 °C   
10
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery White   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
2.25   
15
6.50   
5
Brinell Hardness
70.00 MPa   
99+
1,670.00 MPa   
5
Vickers Hardness
Not Available   
1,760.00 MPa   
3
Speed of Sound
1,790.00 m/s   
99+
4,825.00 m/s   
13
Optical Properties
  
  
Reflectivity
Not Available   
78.00 %   
6
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
Chemical Properties
Chemical Formula
Bi   
Ir   
Isotopes
  
  
Known Isotopes
33   
6
34   
5
Electronegativity
  
  
Pauling Electronegativity
2.02   
6
2.20   
4
Sanderson Electronegativity
2.34   
3
Not Available   
Allred Rochow Electronegativity
1.67   
6
1.55   
11
Mulliken-Jaffe Electronegativity
2.15   
4
Not Available   
Allen Electronegativity
2.01   
4
1.68   
17
Electropositivity
  
  
Pauling Electropositivity
1.98   
99+
1.80   
99+
Ionization Energies
  
  
1st Energy Level
703.00 kJ/mol   
35
880.00 kJ/mol   
9
2nd Energy Level
1,610.00 kJ/mol   
33
1,600.00 kJ/mol   
35
3rd Energy Level
2,466.00 kJ/mol   
99+
Not Available   
4th Energy Level
4,370.00 kJ/mol   
28
Not Available   
5th Energy Level
5,400.00 kJ/mol   
30
Not Available   
6th Energy Level
8,520.00 kJ/mol   
19
Not Available   
Electrochemical Equivalent
2.60 g/amp-hr   
19
1.14 g/amp-hr   
99+
Electron Work Function
4.22 eV   
22
4.55 eV   
13
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Flammable, Ionization, Radioactive Isotopes, Radioactivity   
Atomic Properties
Atomic Number
83   
33
77   
39
Electron Configuration
[Xe] 4f14 5d10 6s2 6p3   
[Xe] 4f14 5d7 6s2   
Crystal Structure
Rhombohedral (RHO)   
Face Centered Cubic (FCC)   
Crystal Lattice
RHO-Crystal-Structure-of-Bismuth.jpg#100   
FCC-Crystal-Structure-of-Iridium.jpg#100   
Atom
  
  
Number of Protons
83   
33
74   
99+
Number of Neutrons
126   
18
110   
27
Number of Electrons
83   
33
74   
99+
Radius of an Atom
  
  
Atomic Radius
156.00 pm   
29
136.00 pm   
99+
Covalent Radius
148.00 pm   
36
141.00 pm   
99+
Van der Waals Radius
207.00 pm   
26
202.00 pm   
27
Atomic Weight
208.98 amu   
29
192.22 amu   
34
Atomic Volume
21.30 cm3/mol   
14
9.53 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Lead
  
Osmium
  
Next Element
Polonium
  
Platinum
  
Valence Electron Potential
41.90 (-eV)   
99+
140.00 (-eV)   
5
Lattice Constant
667.40 pm   
2
383.90 pm   
26
Lattice Angles
NA   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
9.78 g/cm3   
39
22.56 g/cm3   
10
Density When Liquid (at m.p.)
10.05 g/cm3   
18
19.00 g/cm3   
3
Tensile Strength
Not Available   
2,000.00 MPa   
2
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available   
0.00 (Pa)   
25
Elasticity properties
  
  
Shear Modulus
12.00 GPa   
99+
210.00 GPa   
2
Bulk Modulus
31.00 GPa   
38
320.00 GPa   
3
Young's Modulus
32.00 GPa   
99+
528.00 GPa   
1
Poisson Ratio
0.33   
11
0.26   
22
Other Mechanical Properties
NA   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
9.79   
30
21.78   
3
Magnetic Ordering
Diamagnetic   
Paramagnetic   
Permeability
0.00 H/m   
6
Not Available   
Susceptibility
0.00   
6
Not Available   
Electrical Properties
  
  
Electrical Property
Semiconductor   
Conductor   
Resistivity
1.29 nΩ·m   
99+
47.10 nΩ·m   
99+
Electrical Conductivity
0.01 106/cm Ω   
99+
0.19 106/cm Ω   
10
Electron Affinity
91.20 kJ/mol   
11
151.00 kJ/mol   
4
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.13 J/(kg K)   
39
Molar Heat Capacity
25.52 J/mol·K   
37
25.10 J/mol·K   
99+
Thermal Conductivity
7.97 W/m·K   
99+
147.00 W/m·K   
10
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
13.40 µm/(m·K)   
28
6.40 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
151.00 kJ/mol   
99+
799.10 kJ/mol   
1
Enthalpy of Fusion
10.90 kJ/mol   
33
35.23 kJ/mol   
1
Enthalpy of Atomization
207.10 kJ/mol   
99+
837.00 kJ/mol   
1
Standard Molar Entropy
56.70 J/mol.K   
24
35.50 J/mol.K   
99+
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