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Properties of Palladium and Platinum

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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

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
25
📊

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

Previous Element

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
📊