Home
 Compare Metals

Zinc vs Cadmium

Zinc
Cadmium
Cadmium vs Zinc


Periodic Table
Symbol
Zn  
Cd  
Group Number
12  
6
12  
6
Period Number
4  
5  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440666  
24
7440439  
99+
Space Group Name
P63/mmc  
P63/mmc  
Space Group Number
194.00  
7
194.00  
7
Facts
Interesting Facts
  • 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.
  
  • Naturally occurring minor elements include Cadmium.
  • Cadmium is released into atmosphere to control volcanic eruption and forest fires.
  • It is used for electroplating of Steel for corrosion resistance.
  • It can absorb neutrons and used in nuclear reactor to control atomic fission.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
Found As a By-product, Found in Minerals, Mining  
History
  
  
Who Discovered
Indian metallurgists  
Karl Samuel Leberecht Hermann and Friedrich Stromeyer  
Discovery
Before 1000 BCE  
In 1817  
Abundance
  
  
Abundance In Universe
0.00 %  
12
0.00 %  
23
Abundance In Sun
0.00 %  
10
0.00 %  
21
Abundance In Meteorites
0.02 %  
12
0.00 %  
31
Abundance In Earth's Crust
0.01 %  
16
0.00 %  
99+
Abundance In Oceans
0.00 %  
10
0.00 %  
28
Abundance In Humans
0.00 %  
7
0.00 %  
12
Uses
Uses & Benefits
  • It is mainly used for Galvanizing other metals.
  • It is also used for manufacturing die-casting and it is very essential for automobile industry.
  
  • It has very limited uses as it is a toxic metal and it can cause birth defects, cancer, etc.
  • Almost 80% of Cadmium metal is used in Nickel cadmium Batteries and now it is getting replaced with nickel hydride.
  
Industrial Uses
Electrical Industry, Electronic Industry  
Aerospace Industry, Ammunition Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Medical Uses
Pharmaceutical Industry  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Highly Toxic  
Toxic  
Present in Human Body
Yes  
Yes  
In Blood
7.00 Blood/mg dm-3  
6
0.01 Blood/mg dm-3  
24
In Bone
170.00 p.p.m.  
6
1.80 p.p.m.  
16
Physical
Melting Point
419.58 °C  
99+
320.90 °C  
99+
Boiling Point
907.00 °C  
99+
765.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
Silvery Bluish-Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
2.00  
17
Brinell Hardness
327.00 MPa  
39
203.00 MPa  
99+
Vickers Hardness
207.00 MPa  
99+
90.00 MPa  
99+
Speed of Sound
3,850.00 m/s  
25
2,310.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.00  
99+
1.71  
26
Reflectivity
80.00 %  
7
67.00 %  
16
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Zn  
Cd  
Isotopes
  
  
Known Isotopes
25  
14
34  
5
Electronegativity
  
  
Pauling Electronegativity
1.65  
20
1.69  
18
Sanderson Electronegativity
2.23  
7
1.98  
11
Allred Rochow Electronegativity
1.66  
8
1.46  
16
Mulliken-Jaffe Electronegativity
1.65  
20
1.53  
25
Allen Electronegativity
1.59  
25
1.52  
30
Electropositivity
  
  
Pauling Electropositivity
2.35  
35
2.31  
37
Ionization Energies
  
  
1st Energy Level
906.40 kJ/mol  
6
867.80 kJ/mol  
11
2nd Energy Level
1,733.30 kJ/mol  
28
1,631.40 kJ/mol  
33
3rd Energy Level
3,833.00 kJ/mol  
12
3,616.00 kJ/mol  
13
4th Energy Level
5,731.00 kJ/mol  
20
867.80 kJ/mol  
99+
5th Energy Level
7,970.00 kJ/mol  
15
4,040.00 kJ/mol  
99+
6th Energy Level
10,400.00 kJ/mol  
15
8,640.00 kJ/mol  
28
7th Energy level
12,900.00 kJ/mol  
9
8,640.00 kJ/mol  
24
8th Energy Level
16,800.00 kJ/mol  
6
8,640.00 kJ/mol  
24
9th Energy Level
19,600.00 kJ/mol  
8
8,670.00 kJ/mol  
22
10th Energy Level
23,000.00 kJ/mol  
10
8,650.00 kJ/mol  
25
11th Energy Level
26,400.00 kJ/mol  
11
8,670.00 kJ/mol  
22
12th Energy Level
29,990.00 kJ/mol  
33
86,400.00 kJ/mol  
3
13th Energy Level
40,490.00 kJ/mol  
5
8,640.00 kJ/mol  
17
14th Energy Level
43,800.00 kJ/mol  
6
8,650.00 kJ/mol  
15
15th Energy Level
47,300.00 kJ/mol  
99+
86,400.00 kJ/mol  
10
16th Energy Level
52,300.00 kJ/mol  
99+
86,400.00 kJ/mol  
10
17th Energy Level
55,900.00 kJ/mol  
10
864.90 kJ/mol  
28
18th Energy Level
59,700.00 kJ/mol  
11
8,670.00 kJ/mol  
17
19th Energy Level
67,300.00 kJ/mol  
10
867.80 kJ/mol  
26
20th Energy Level
171,200.00 kJ/mol  
1
865.00 kJ/mol  
16
21st Energy Level
179,100.00 kJ/mol  
1
8,670.00 kJ/mol  
10
22nd Energy Level
906.00 kJ/mol  
9
864.00 kJ/mol  
14
23rd Energy Level
906.40 kJ/mol  
37
864.90 kJ/mol  
40
24th Energy Level
906.40 kJ/mol  
5
864.90 kJ/mol  
10
25th Energy Level
906.40 kJ/mol  
4
864.00 kJ/mol  
8
26th Energy Level
906.40 kJ/mol  
4
864.90 kJ/mol  
8
27th Energy Level
906.40 kJ/mol  
3
864.90 kJ/mol  
8
28th Energy Level
906.40 kJ/mol  
6
864.90 kJ/mol  
11
29th Energy Level
906.40 kJ/mol  
7
864.90 kJ/mol  
12
30th Energy Level
906.40 kJ/mol  
4
864.00 kJ/mol  
8
Electrochemical Equivalent
1.22 g/amp-hr  
99+
2.10 g/amp-hr  
31
Electron Work Function
4.33 eV  
24
4.22 eV  
29
Other Chemical Properties
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes  
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
30  
99+
48  
99+
Electron Configuration
[Ar] 3d10 4s2  
[Kr] 4d10 5s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
HCP-Crystal-Structure-of-Zinc.jpg#100  
HCP-Crystal-Structure-of-Cadmium.jpg#100  
Atom
  
  
Number of Protons
30  
99+
48  
99+
Number of Neutrons
35  
99+
64  
99+
Number of Electrons
30  
99+
48  
99+
Radius of an Atom
  
  
Atomic Radius
134.00 pm  
99+
151.00 pm  
34
Covalent Radius
122.00 pm  
99+
144.00 pm  
99+
Van der Waals Radius
139.00 pm  
99+
158.00 pm  
99+
Atomic Weight
65.38 amu  
99+
112.41 amu  
99+
Atomic Volume
9.20 cm3/mol  
99+
13.10 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Copper
  
Silver
  
Next Element
Gallium
  
Indium
  
Valence Electron Potential
38.90 (-eV)  
99+
30.00 (-eV)  
99+
Lattice Constant
266.49 pm  
99+
297.94 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.86  
4
1.89  
2
Mechanical
Density
  
  
Density At Room Temperature
7.14 g/cm3  
99+
8.65 g/cm3  
99+
Density When Liquid (at m.p.)
6.57 g/cm3  
99+
8.00 g/cm3  
99+
Tensile Strength
120.00 MPa  
27
62.00 MPa  
34
Viscosity
0.00  
7
0.00  
13
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.00 (Pa)  
24
Elasticity properties
  
  
Shear Modulus
43.00 GPa  
18
19.00 GPa  
99+
Bulk Modulus
70.00 GPa  
20
42.00 GPa  
34
Young's Modulus
108.00 GPa  
21
50.00 GPa  
39
Poisson Ratio
0.25  
24
0.30  
14
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
6.90  
99+
8.65  
99+
Magnetic Ordering
Diamagnetic  
Diamagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
10
Susceptibility
0.00  
6
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Semiconductor  
Resistivity
59.00 nΩ·m  
40
72.70 nΩ·m  
36
Electrical Conductivity
0.17 106/cm Ω  
12
0.14 106/cm Ω  
17
Electron Affinity
0.00 kJ/mol  
99+
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.39 J/(kg K)  
14
0.23 J/(kg K)  
26
Molar Heat Capacity
25.47 J/mol·K  
99+
26.02 J/mol·K  
40
Thermal Conductivity
116.00 W/m·K  
14
96.60 W/m·K  
16
Critical Temperature
692.00 K  
99+
594.00 K  
99+
Thermal Expansion
30.20 µm/(m·K)  
11
30.80 µm/(m·K)  
10
Enthalpy
  
  
Enthalpy of Vaporization
7.32 kJ/mol  
99+
100.00 kJ/mol  
99+
Enthalpy of Fusion
7.32 kJ/mol  
99+
6.19 kJ/mol  
99+
Enthalpy of Atomization
129.70 kJ/mol  
99+
113.00 kJ/mol  
99+
Standard Molar Entropy
41.60 J/mol.K  
99+
51.80 J/mol.K  
38
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!