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Lead Zinc Comparison

Lead
Zinc
Zinc Lead comparison


Periodic Table
Symbol
Pb  
Zn  
Group Number
14  
4
12  
6
Period Number
6  
4  
Block
p block  
d block  
Element Family
Post-​Transition  
Transition Metal  
CAS Number
7439921  
99+
7440666  
24
Space Group Name
Fm_ 3m  
P63/mmc  
Space Group Number
225.00  
3
194.00  
7
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.
  
  • Zinc metal found (obtain) in many forms like granules, foil, dust and in a powder form.
  • The leading producers of Zinc metal are Australia, Canada, China, U.S.A and Peru.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
-  
Indian metallurgists  
Discovery
In Middle Easterns (7000 BCE)  
Before 1000 BCE  
Abundance
  
  
Abundance In Universe
0.00 %  
17
0.00 %  
12
Abundance In Sun
0.00 %  
18
0.00 %  
10
Abundance In Meteorites
0.00 %  
23
0.02 %  
12
Abundance In Earth's Crust
0.00 %  
26
0.01 %  
16
Abundance In Oceans
0.00 %  
22
0.00 %  
10
Abundance In Humans
0.00 %  
9
0.00 %  
7
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.
  
  • It is mainly used for Galvanizing other metals.
  • It is also used for manufacturing die-casting and it is very essential for automobile industry.
  
Industrial Uses
Chemical Industry, Electrical Industry, Electronic Industry  
Electrical Industry, Electronic Industry  
Medical Uses
Surgical Instruments Manufacturing  
Pharmaceutical Industry  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Highly Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.21 Blood/mg dm-3  
11
7.00 Blood/mg dm-3  
6
In Bone
30.00 p.p.m.  
10
170.00 p.p.m.  
6
Physical
Melting Point
327.50 °C  
99+
419.58 °C  
99+
Boiling Point
1,740.00 °C  
99+
907.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gray  
Silvery Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
1.50  
19
2.50  
15
Brinell Hardness
38.00 MPa  
99+
327.00 MPa  
39
Vickers Hardness
38.00 MPa  
99+
207.00 MPa  
99+
Speed of Sound
1,190.00 m/s  
99+
3,850.00 m/s  
25
Optical Properties
  
  
Refractive Index
2.02  
14
1.00  
99+
Reflectivity
5.00 %  
39
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Pb  
Zn  
Isotopes
  
  
Known Isotopes
35  
4
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.87  
14
1.65  
20
Sanderson Electronegativity
2.29  
4
2.23  
7
Allred Rochow Electronegativity
1.55  
12
1.66  
8
Mulliken-Jaffe Electronegativity
2.41  
2
1.65  
20
Allen Electronegativity
1.85  
11
1.59  
25
Electropositivity
  
  
Pauling Electropositivity
1.67  
99+
2.35  
35
Ionization Energies
  
  
1st Energy Level
715.60 kJ/mol  
31
906.40 kJ/mol  
6
2nd Energy Level
1,450.50 kJ/mol  
99+
1,733.30 kJ/mol  
28
3rd Energy Level
3,081.50 kJ/mol  
23
3,833.00 kJ/mol  
12
4th Energy Level
4,083.00 kJ/mol  
99+
5,731.00 kJ/mol  
20
5th Energy Level
6,640.00 kJ/mol  
32
7,970.00 kJ/mol  
15
6th Energy Level
7,150.00 kJ/mol  
99+
10,400.00 kJ/mol  
15
7th Energy level
7,156.00 kJ/mol  
36
12,900.00 kJ/mol  
9
8th Energy Level
7,150.00 kJ/mol  
32
16,800.00 kJ/mol  
6
9th Energy Level
7,156.00 kJ/mol  
30
19,600.00 kJ/mol  
8
10th Energy Level
7,156.00 kJ/mol  
34
23,000.00 kJ/mol  
10
11th Energy Level
7,156.00 kJ/mol  
33
26,400.00 kJ/mol  
11
12th Energy Level
7,150.00 kJ/mol  
99+
29,990.00 kJ/mol  
33
13th Energy Level
7,150.00 kJ/mol  
28
40,490.00 kJ/mol  
5
14th Energy Level
715.60 kJ/mol  
99+
43,800.00 kJ/mol  
6
15th Energy Level
71,500.00 kJ/mol  
24
47,300.00 kJ/mol  
99+
16th Energy Level
71,500.00 kJ/mol  
19
52,300.00 kJ/mol  
99+
17th Energy Level
715.60 kJ/mol  
40
55,900.00 kJ/mol  
10
18th Energy Level
7,150.00 kJ/mol  
30
59,700.00 kJ/mol  
11
19th Energy Level
715.60 kJ/mol  
37
67,300.00 kJ/mol  
10
20th Energy Level
715.00 kJ/mol  
31
171,200.00 kJ/mol  
1
21st Energy Level
715.60 kJ/mol  
99+
179,100.00 kJ/mol  
1
22nd Energy Level
715.00 kJ/mol  
25
906.00 kJ/mol  
9
23rd Energy Level
715.60 kJ/mol  
99+
906.40 kJ/mol  
37
24th Energy Level
715.60 kJ/mol  
24
906.40 kJ/mol  
5
25th Energy Level
715.00 kJ/mol  
25
906.40 kJ/mol  
4
26th Energy Level
715.60 kJ/mol  
24
906.40 kJ/mol  
4
27th Energy Level
715.60 kJ/mol  
23
906.40 kJ/mol  
3
28th Energy Level
715.60 kJ/mol  
29
906.40 kJ/mol  
6
29th Energy Level
715.60 kJ/mol  
30
906.40 kJ/mol  
7
30th Energy Level
715.00 kJ/mol  
24
906.40 kJ/mol  
4
Electrochemical Equivalent
3.87 g/amp-hr  
9
1.22 g/amp-hr  
99+
Electron Work Function
4.25 eV  
28
4.33 eV  
24
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes  
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
82  
34
30  
99+
Electron Configuration
[Xe] 4f14 5d10 6s2 6p2  
[Ar] 3d10 4s2  
Crystal Structure
Face Centered Cubic (FCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
FCC-Crystal-Structure-of-Lead.jpg#100  
HCP-Crystal-Structure-of-Zinc.jpg#100  
Atom
  
  
Number of Protons
82  
34
30  
99+
Number of Neutrons
125  
20
35  
99+
Number of Electrons
82  
34
30  
99+
Radius of an Atom
  
  
Atomic Radius
175.00 pm  
21
134.00 pm  
99+
Covalent Radius
146.00 pm  
40
122.00 pm  
99+
Van der Waals Radius
202.00 pm  
34
139.00 pm  
99+
Atomic Weight
207.20 amu  
30
65.38 amu  
99+
Atomic Volume
18.17 cm3/mol  
39
9.20 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Thallium
  
Copper
  
Next Element
Bismuth
  
Gallium
  
Valence Electron Potential
24.20 (-eV)  
99+
38.90 (-eV)  
99+
Lattice Constant
495.08 pm  
18
266.49 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.51  
99+
1.86  
4
Mechanical
Density
  
  
Density At Room Temperature
11.34 g/cm3  
35
7.14 g/cm3  
99+
Density When Liquid (at m.p.)
10.66 g/cm3  
36
6.57 g/cm3  
99+
Tensile Strength
12.00 MPa  
99+
120.00 MPa  
27
Viscosity
0.00  
29
0.00  
7
Vapor Pressure
  
  
Vapor Pressure at 1000 K
1.64 (Pa)  
7
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
30
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
5.60 GPa  
99+
43.00 GPa  
18
Bulk Modulus
46.00 GPa  
28
70.00 GPa  
20
Young's Modulus
16.00 GPa  
99+
108.00 GPa  
21
Poisson Ratio
0.44  
3
0.25  
24
Other Mechanical Properties
Ductile, Malleable  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
11.35  
38
6.90  
99+
Magnetic Ordering
Diamagnetic  
Diamagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
16
Susceptibility
0.00  
30
0.00  
6
Electrical Properties
  
  
Electrical Property
Poor Conductor  
Conductor  
Resistivity
208.00 nΩ·m  
16
59.00 nΩ·m  
40
Electrical Conductivity
0.05 106/cm Ω  
99+
0.17 106/cm Ω  
12
Electron Affinity
35.10 kJ/mol  
33
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.39 J/(kg K)  
14
Molar Heat Capacity
26.65 J/mol·K  
34
25.47 J/mol·K  
99+
Thermal Conductivity
35.30 W/m·K  
39
116.00 W/m·K  
14
Critical Temperature
600.61 K  
99+
692.00 K  
99+
Thermal Expansion
28.90 µm/(m·K)  
13
30.20 µm/(m·K)  
11
Enthalpy
  
  
Enthalpy of Vaporization
179.40 kJ/mol  
99+
7.32 kJ/mol  
99+
Enthalpy of Fusion
4.77 kJ/mol  
99+
7.32 kJ/mol  
99+
Enthalpy of Atomization
194.60 kJ/mol  
99+
129.70 kJ/mol  
99+
Standard Molar Entropy
64.80 J/mol.K  
18
41.60 J/mol.K  
99+
Summary >>
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