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Properties of Cadmium and Iridium

Cadmium
Iridium
Properties of Iridium & Cadmium


Physical Properties
Melting Point
320.90 °C   
99+
2,410.00 °C   
7
Boiling Point
765.00 °C   
99+
4,527.00 °C   
10
Hardness
  
  
Mohs Hardness
2.00   
16
6.50   
5
Brinell Hardness
203.00 MPa   
39
1,670.00 MPa   
5
Vickers Hardness
Not Available   
1,760.00 MPa   
3
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
67.00 %   
11
78.00 %   
6
Speed of Sound
2,310.00 m/s   
39
4,825.00 m/s   
13
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
Cd   
Ir   
Isotopes
  
  
Known Isotopes
34   
5
34   
5
Electronegativity
  
  
Pauling Electronegativity
1.69   
17
2.20   
4
Sanderson Electronegativity
1.98   
9
Not Available   
Allred Rochow Electronegativity
1.46   
15
1.55   
11
Mulliken-Jaffe Electronegativity
1.53   
13
Not Available   
Allen Electronegativity
1.52   
27
1.68   
17
Electropositivity
  
  
Pauling Electropositivity
2.31   
37
1.80   
99+
Ionization Energies
  
  
1st Energy Level
867.80 kJ/mol   
11
880.00 kJ/mol   
9
2nd Energy Level
1,631.40 kJ/mol   
32
1,600.00 kJ/mol   
35
3rd Energy Level
3,616.00 kJ/mol   
13
Not Available   
Electrochemical Equivalent
2.10 g/amp-hr   
27
1.14 g/amp-hr   
99+
Electron Work Function
4.22 eV   
22
4.55 eV   
13
Other Chemical Properties
?
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   
?
Flammable metals have ability to burn or ignite, causing fire or combustion.Flammable, 
?
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, 
?
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.Radioactivity   
Mechanical Properties
Density
  
  
Density At Room Temperature
8.65 g/cm3   
99+
22.56 g/cm3   
10
Density When Liquid (at m.p.)
8.00 g/cm3   
28
19.00 g/cm3   
3
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
Not Available   
0.00 (Pa)   
25
Tensile Strength
62.00 MPa   
16
2,000.00 MPa   
2
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
19.00 GPa   
35
210.00 GPa   
2
Bulk Modulus
42.00 GPa   
29
320.00 GPa   
3
Young's Modulus
50.00 GPa   
36
528.00 GPa   
1
Poisson Ratio
0.30   
14
0.26   
22
Other Mechanical Properties
?
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   
NA   
Periodic Table
Symbol
Cd   
Ir   
Group Number
12   
6
9   
9
Period Number
5   
6   
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
48   
99+
77   
39
Atomic Weight
112.41 amu   
99+
192.22 amu   
34
Atomic Volume
13.10 cm3/mol   
39
9.53 cm3/mol   
99+
Electron Configuration
[Kr] 4d10 5s2   
[Xe] 4f14 5d7 6s2   
Valence Electron Potential
30.00 (-eV)   
99+
140.00 (-eV)   
5
Atom
  
  
Number of Protons
48   
99+
74   
99+
Number of Neutrons
64   
99+
110   
27
Number of Electrons
48   
99+
74   
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)   
?
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.Face Centered Cubic (FCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Cadmium.jpg#100   
FCC-Crystal-Structure-of-Iridium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
151.00 pm   
32
136.00 pm   
99+
Covalent Radius
144.00 pm   
40
141.00 pm   
99+
Van der Waals Radius
158.00 pm   
99+
202.00 pm   
27
Lattice Constant
297.94 pm   
99+
383.90 pm   
26
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.89   
1
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Indium
  
Platinum
  
Previous Element
Silver
  
Osmium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
72.70 nΩ·m   
36
47.10 nΩ·m   
99+
Electrical Conductivity
0.14 106/cm Ω   
15
0.19 106/cm Ω   
10
Electron Affinity
0.00 kJ/mol   
40
151.00 kJ/mol   
4
Electrical Property
?
Semiconductor metals have conductivity between that of a conductor and an insulator.Semiconductor   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Magnetic Characteristics
  
  
Specific Gravity
8.65   
36
21.78   
3
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   
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.23 J/(kg K)   
26
0.13 J/(kg K)   
39
Thermal Conductivity
96.60 W/m·K   
16
147.00 W/m·K   
10
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
26.02 J/mol·K   
32
25.10 J/mol·K   
99+
Thermal Expansion
30.80 µm/(m·K)   
10
6.40 µm/(m·K)   
99+
Standard Molar Entropy
51.80 J/mol.K   
27
35.50 J/mol.K   
99+
Enthalpy
  
  
Enthalpy of Vaporization
100.00 kJ/mol   
99+
799.10 kJ/mol   
1
Enthalpy of Fusion
6.19 kJ/mol   
99+
35.23 kJ/mol   
1
Enthalpy of Atomization
113.00 kJ/mol   
99+
837.00 kJ/mol   
1
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