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Properties of Palladium and Platinum

Palladium
Platinum
Properties of Platinum & Palladium


Physical Properties
Melting Point
1,554.90 °C   
22
1,772.00 °C   
16
Boiling Point
2,963.00 °C   
33
3,827.00 °C   
15
Hardness
  
  
Mohs Hardness
4.75   
9
3.50   
11
Brinell Hardness
320.00 MPa   
33
300.00 MPa   
34
Vickers Hardness
121.00 MPa   
36
400.00 MPa   
25
Optical Properties
  
  
Refractive Index
1.72   
1
Not Available   
Reflectivity
84.00 %   
4
73.00 %   
8
Speed of Sound
3,070.00 m/s   
26
2,800.00 m/s   
29
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
Pd   
Pt   
Isotopes
  
  
Known Isotopes
38   
1
35   
4
Electronegativity
  
  
Pauling Electronegativity
2.20   
4
2.28   
3
Sanderson Electronegativity
Not Available   
Not Available   
Allred Rochow Electronegativity
1.35   
21
1.44   
17
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
1.59   
22
1.72   
16
Electropositivity
  
  
Pauling Electropositivity
1.80   
99+
1.72   
99+
Ionization Energies
  
  
1st Energy Level
520.23 kJ/mol   
99+
870.00 kJ/mol   
10
2nd Energy Level
7,298.22 kJ/mol   
2
1,791.00 kJ/mol   
21
3rd Energy Level
11,815.13 kJ/mol   
3
Not Available   
Electrochemical Equivalent
1.99 g/amp-hr   
30
1.82 g/amp-hr   
35
Electron Work Function
5.12 eV   
3
5.65 eV   
1
Other Chemical Properties
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
Corrosion is a process which converts refined metals to their more stable forms, for example, its oxide and hydroxide. This process of metals getting corroded is a gradual destruction of metals by chemical reactions.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, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility   
?
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
12.02 g/cm3   
29
21.45 g/cm3   
11
Density When Liquid (at m.p.)
10.38 g/cm3   
17
19.77 g/cm3   
2
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
27
Not Available   
Vapor Pressure at 2000 K
0.00 (Pa)   
30
0.07 (Pa)   
18
Tensile Strength
Not Available   
125.00 MPa   
14
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
44.00 GPa   
17
61.00 GPa   
14
Bulk Modulus
180.00 GPa   
9
230.00 GPa   
6
Young's Modulus
121.00 GPa   
16
168.00 GPa   
14
Poisson Ratio
0.39   
5
0.38   
6
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, 
?
Weldability of metals defines their ability to be welded.This property of metals also known as joinability.Weldable   
?
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
Pd   
Pt   
Group Number
10   
8
10   
8
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
46   
99+
78   
38
Atomic Weight
106.42 amu   
99+
47.87 amu   
99+
Atomic Volume
8.90 cm3/mol   
99+
9.09 cm3/mol   
99+
Electron Configuration
[Kr] 4d10   
[Xe] 4f14 5d9 6s1   
Valence Electron Potential
33.00 (-eV)   
99+
392.42 (-eV)   
1
Atom
  
  
Number of Protons
46   
99+
78   
38
Number of Neutrons
60   
99+
117   
24
Number of Electrons
46   
99+
78   
38
Crystal Structure
?
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)   
?
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
FCC-Crystal-Structure-of-Palladium.jpg#100   
FCC-Crystal-Structure-of-Platinum.jpg#100   
Radius of an Atom
  
  
Atomic Radius
137.00 pm   
40
139.00 pm   
39
Covalent Radius
139.00 pm   
99+
136.00 pm   
99+
Van der Waals Radius
163.00 pm   
40
175.00 pm   
36
Lattice Constant
389.07 pm   
25
392.42 pm   
24
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Silver
  
Gold
  
Previous Element
Rhodium
  
Iridium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
105.40 nΩ·m   
29
105.00 nΩ·m   
30
Electrical Conductivity
0.10 106/cm Ω   
22
0.10 106/cm Ω   
21
Electron Affinity
54.23 kJ/mol   
17
205.30 kJ/mol   
2
Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Magnetic Characteristics
  
  
Specific Gravity
12.02   
21
21.45   
4
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   
0.00 H/m   
3
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.24 J/(kg K)   
23
0.13 J/(kg K)   
39
Thermal Conductivity
71.80 W/m·K   
23
71.60 W/m·K   
24
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
25.98 J/mol·K   
33
25.86 J/mol·K   
35
Thermal Expansion
11.80 µm/(m·K)   
33
8.80 µm/(m·K)   
99+
Standard Molar Entropy
37.60 J/mol.K   
40
41.60 J/mol.K   
36
Enthalpy
  
  
Enthalpy of Vaporization
376.60 kJ/mol   
19
510.50 kJ/mol   
11
Enthalpy of Fusion
16.74 kJ/mol   
18
19.70 kJ/mol   
12
Enthalpy of Atomization
393.30 kJ/mol   
22
565.00 kJ/mol   
11
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