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Lead vs Bismuth


Bismuth vs Lead


Periodic Table

Symbol
Pb  
Bi  

Group Number
14  
4
15  
3

Period Number
6  
6  

Block
p block  
p block  

Element Family
Post-​Transition  
Post-​Transition  

CAS Number
7439921  
99+
7440699  
22

Space Group Name
Fm_ 3m  
C12/m1  

Space Group Number
225.00  
2
12.00  
12

Facts

Interesting Facts
  • 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.
  
  • 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.
  

Sources
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  

History
  
  

Who Discovered
Unknown  
Claude François Geoffroy  

Discovery
In Middle Easterns (7000 BCE)  
In 1753  

Abundance
  
  

Abundance In Universe
1 * 10-6 %  
16
7 * 10-8 %  
25

Abundance In Sun
~0.000001 %  
18
~0.000006 %  
14

Abundance In Meteorites
0.00 %  
23
0.00 %  
99+

Abundance In Earth's Crust
0.00 %  
26
0.00 %  
99+

Abundance In Oceans
0.00 %  
22
0.00 %  
24

Abundance In Humans
0.00 %  
8
Not Available  

Uses

Uses & Benefits
  • 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.
  
  • 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.
  

Industrial Uses
Chemical Industry, Electrical Industry, Electronic Industry  
Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  

Medical Uses
Surgical Instruments Manufacturing  
Pharmaceutical Industry  

Other Uses
Alloys  
Alloys  

Biological Properties
  
  

Toxicity
Toxic  
Low Toxic  

Present in Human Body
Yes  
Yes  

In Blood
0.21 Blood/mg dm-3  
11
0.02 Blood/mg dm-3  
20

In Bone
30.00 p.p.m.  
10
0.20 p.p.m.  
22

Physical Properties

Melting Point
327.50 °C  
99+
271.30 °C  
99+

Boiling Point
1,740.00 °C  
99+
1,560.00 °C  
99+

Appearance
  
  

Physical State
Solid  
Solid  

Color
Gray  
Silver  

Luster
Metallic  
Metallic  

Hardness
  
  

Mohs Hardness
1.50  
18
2.25  
15

Brinell Hardness
38.00 MPa  
99+
70.00 MPa  
99+

Speed of Sound
1,190.00 m/s  
99+
1,790.00 m/s  
99+

Optical Properties
  
  

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
Pb  
Bi  

Isotopes
  
  

Known Isotopes
35  
4
33  
6

Electronegativity
  
  

Pauling Electronegativity
1.87  
13
2.02  
6

Sanderson Electronegativity
2.29  
4
2.34  
3

Allred Rochow Electronegativity
1.55  
11
1.67  
6

Mulliken-Jaffe Electronegativity
2.41  
2
2.15  
4

Allen Electronegativity
1.85  
8
2.01  
4

Electropositivity
  
  

Pauling Electropositivity
1.67  
99+
1.98  
99+

Ionization Energies
  
  

1st Energy Level
715.60 kJ/mol  
31
703.00 kJ/mol  
35

2nd Energy Level
1,450.50 kJ/mol  
99+
1,610.00 kJ/mol  
33

3rd Energy Level
3,081.50 kJ/mol  
23
2,466.00 kJ/mol  
99+

4th Energy Level
4,083.00 kJ/mol  
35
4,370.00 kJ/mol  
28

5th Energy Level
6,640.00 kJ/mol  
20
5,400.00 kJ/mol  
30

6th Energy Level
Not Available  
8,520.00 kJ/mol  
19

Electrochemical Equivalent
3.87 g/amp-hr  
9
2.60 g/amp-hr  
19

Electron Work Function
4.25 eV  
21
4.22 eV  
22

Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes  
Ionization, Radioactive Isotopes, Solubility  

Atomic Properties

Atomic Number
82  
34
83  
33

Electron Configuration
[Xe] 4f14 5d10 6s2 6p2  
[Xe] 4f14 5d10 6s2 6p3  

Crystal Structure
Face Centered Cubic (FCC)  
Rhombohedral (RHO)  

Crystal Lattice
FCC-Crystal-Structure-of-Lead.jpg#100  
RHO-Crystal-Structure-of-Bismuth.jpg#100  

Atom
  
  

Number of Protons
82  
34
83  
33

Number of Neutrons
125  
19
126  
18

Number of Electrons
82  
34
83  
33

Radius of an Atom
  
  

Atomic Radius
175.00 pm  
19
156.00 pm  
29

Covalent Radius
146.00 pm  
38
148.00 pm  
36

Van der Waals Radius
202.00 pm  
27
207.00 pm  
26

Atomic Weight
207.20 amu  
30
208.98 amu  
29

Atomic Volume
18.17 cm3/mol  
27
21.30 cm3/mol  
14

Adjacent Atomic Numbers
  
  

Previous Element
Thallium
  
Lead
  

Next Element
Bismuth
  
Polonium
  

Valence Electron Potential
24.20 (-eV)  
99+
41.90 (-eV)  
99+

Lattice Constant
495.08 pm  
16
667.40 pm  
2

Lattice Angles
π/2, π/2, π/2  
NA  

Lattice C/A Ratio
Not Available  
Not Available  

Mechanical Properties

Density
  
  

Density At Room Temperature
11.34 g/cm3  
33
9.78 g/cm3  
39

Density When Liquid (at m.p.)
10.66 g/cm3  
15
10.05 g/cm3  
18

Tensile Strength
12.00 MPa  
20
Not Available  

Viscosity
Not Available  
Not Available  

Vapor Pressure
  
  

Vapor Pressure at 1000 K
1.64 (Pa)  
7
Not Available  

Elasticity properties
  
  

Shear Modulus
5.60 GPa  
99+
12.00 GPa  
99+

Bulk Modulus
46.00 GPa  
24
31.00 GPa  
38

Young's Modulus
16.00 GPa  
99+
32.00 GPa  
99+

Poisson Ratio
0.44  
3
0.33  
11

Other Mechanical Properties
Ductile, Malleable  
NA  

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
11.35  
25
9.79  
30

Magnetic Ordering
Diamagnetic  
Diamagnetic  

Permeability
Not Available  
0.00 H/m  
6

Susceptibility
Not Available  
0.00  
6

Electrical Properties
  
  

Electrical Property
Poor Conductor  
Semiconductor  

Resistivity
208.00 nΩ·m  
16
1.29 nΩ·m  
99+

Electrical Conductivity
0.05 106/cm Ω  
36
0.01 106/cm Ω  
99+

Electron Affinity
35.10 kJ/mol  
28
91.20 kJ/mol  
11

Thermal Properties

Specific Heat
0.13 J/(kg K)  
39
0.12 J/(kg K)  
40

Molar Heat Capacity
26.65 J/mol·K  
26
25.52 J/mol·K  
37

Thermal Conductivity
35.30 W/m·K  
38
7.97 W/m·K  
99+

Critical Temperature
Not Available  
Not Available  

Thermal Expansion
28.90 µm/(m·K)  
13
13.40 µm/(m·K)  
28

Enthalpy
  
  

Enthalpy of Vaporization
179.40 kJ/mol  
99+
151.00 kJ/mol  
99+

Enthalpy of Fusion
4.77 kJ/mol  
99+
10.90 kJ/mol  
33

Enthalpy of Atomization
194.60 kJ/mol  
99+
207.10 kJ/mol  
99+

Standard Molar Entropy
64.80 J/mol.K  
17
56.70 J/mol.K  
24

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