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Properties of Zinc and Cadmium

Zinc
Cadmium
Properties of Cadmium & Zinc


Physical Properties
Melting Point
419.58 °C   
99+
320.90 °C   
99+
Boiling Point
907.00 °C   
99+
765.00 °C   
99+
Hardness
  
  
Mohs Hardness
2.50   
14
2.00   
16
Brinell Hardness
327.00 MPa   
32
203.00 MPa   
39
Vickers Hardness
Not Available   
Not Available   
Optical Properties
  
  
Refractive Index
1.00   
2
Not Available   
Reflectivity
80.00 %   
5
67.00 %   
11
Speed of Sound
3,850.00 m/s   
18
2,310.00 m/s   
39
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
Zn   
Cd   
Isotopes
  
  
Known Isotopes
25   
14
34   
5
Electronegativity
  
  
Pauling Electronegativity
1.65   
19
1.69   
17
Sanderson Electronegativity
2.23   
6
1.98   
9
Allred Rochow Electronegativity
1.66   
7
1.46   
15
Mulliken-Jaffe Electronegativity
1.65   
11
1.53   
13
Allen Electronegativity
1.59   
22
1.52   
27
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   
27
1,631.40 kJ/mol   
32
3rd Energy Level
3,833.00 kJ/mol   
12
3,616.00 kJ/mol   
13
Electrochemical Equivalent
1.22 g/amp-hr   
99+
2.10 g/amp-hr   
27
Electron Work Function
4.33 eV   
17
4.22 eV   
22
Other Chemical Properties
?
Anti-corrosion metals have the protection on their surfaces which protect them from corroding in corrosive environments.Anti Corrosion, 
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes   
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
Anti-corrosion metals have the protection on their surfaces which protect them from corroding in corrosive environments.Anti Corrosion, 
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility   
Mechanical Properties
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   
37
8.00 g/cm3   
28
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
Not Available   
Not Available   
Tensile Strength
Not Available   
62.00 MPa   
16
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
43.00 GPa   
18
19.00 GPa   
35
Bulk Modulus
70.00 GPa   
19
42.00 GPa   
29
Young's Modulus
108.00 GPa   
19
50.00 GPa   
36
Poisson Ratio
0.25   
24
0.30   
14
Other Mechanical Properties
NA   
?
Ductility of metals defines their ability to deform under tensile stress; this is often characterized by the metals ability to be stretched into a wire.Ductile, 
?
Malleability of metals defines their ability to deform under compressive stress; this is often characterized by the metals ability to form a thin sheet by hammering or rolling.Malleable   
Periodic Table
Symbol
Zn   
Cd   
Group Number
12   
6
12   
6
Period Number
4   
5   
Block
?
The d-block is on the middle of the periodic table and includes elements from columns 3 through 12. These elements are also known as the transition metals because they show a transitivity in their properties i.e. they show a trend in their properties.d block   
?
The d-block is on the middle of the periodic table and includes elements from columns 3 through 12. These elements are also known as the transition metals because they show a transitivity in their properties i.e. they show a trend in their properties.d block   
Element Family
?
What is Transition Metal? All transition metals are placed under the d-block from group number 3 to 12. Transition metals show characteristics like malleability, ductility and are good conductor of electricity.Transition Metal   
?
What is Transition Metal? All transition metals are placed under the d-block from group number 3 to 12. Transition metals show characteristics like malleability, ductility and are good conductor of electricity.Transition Metal   
Atomic Properties
Atomic Number
30   
99+
48   
99+
Atomic Weight
65.38 amu   
99+
112.41 amu   
99+
Atomic Volume
9.20 cm3/mol   
99+
13.10 cm3/mol   
39
Electron Configuration
[Ar] 3d10 4s2   
[Kr] 4d10 5s2   
Valence Electron Potential
38.90 (-eV)   
99+
30.00 (-eV)   
99+
Atom
  
  
Number of Protons
30   
99+
48   
99+
Number of Neutrons
35   
99+
64   
99+
Number of Electrons
30   
99+
48   
99+
Crystal Structure
?
The hexagonal crystal system consists of the 7 point groups such that all their space groups have the hexagonal lattice as underlying lattice. The hexagonal crystal family consists of the 12 point groups such that at least one of their space groups has theHexagonal Close Packed (HCP)   
?
The hexagonal crystal system consists of the 7 point groups such that all their space groups have the hexagonal lattice as underlying lattice. The hexagonal crystal family consists of the 12 point groups such that at least one of their space groups has theHexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Zinc.jpg#100   
HCP-Crystal-Structure-of-Cadmium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
134.00 pm   
99+
151.00 pm   
32
Covalent Radius
122.00 pm   
99+
144.00 pm   
40
Van der Waals Radius
139.00 pm   
99+
158.00 pm   
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
Not Available   
1.89   
1
Adjacent Atomic Numbers
  
  
Next Element
Gallium
  
Indium
  
Previous Element
Copper
  
Silver
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
59.00 nΩ·m   
40
72.70 nΩ·m   
36
Electrical Conductivity
0.17 106/cm Ω   
12
0.14 106/cm Ω   
15
Electron Affinity
0.00 kJ/mol   
40
0.00 kJ/mol   
40
Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
?
Semiconductor metals have conductivity between that of a conductor and an insulator.Semiconductor   
Magnetic Characteristics
  
  
Specific Gravity
6.90   
99+
8.65   
36
Magnetic Ordering
?
Diamagnetic metals produce a magnetic field opposite to the applied magnetic field. Thus, they are repelled by magnets and show magnetic nature.Diamagnetic   
?
Diamagnetic metals produce a magnetic field opposite to the applied magnetic field. Thus, they are repelled by magnets and show magnetic nature.Diamagnetic   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.39 J/(kg K)   
14
0.23 J/(kg K)   
26
Thermal Conductivity
116.00 W/m·K   
14
96.60 W/m·K   
16
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
25.47 J/mol·K   
39
26.02 J/mol·K   
32
Thermal Expansion
30.20 µm/(m·K)   
11
30.80 µm/(m·K)   
10
Standard Molar Entropy
41.60 J/mol.K   
36
51.80 J/mol.K   
27
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+
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