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Properties of Copper and Gold


Properties of Gold & Copper


Physical Properties

Melting Point
1,084.62 °C   
40
1,064.43 °C   
99+

Boiling Point
2,562.00 °C   
99+
2,807.00 °C   
36

Hardness
  
  

Mohs Hardness
3.00   
12
2.50   
14

Brinell Hardness
235.00 MPa   
38
194.00 MPa   
99+

Vickers Hardness
343.00 MPa   
28
216.00 MPa   
31

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
90.00 %   
3
95.00 %   
2

Speed of Sound
3,810.00 m/s   
19
2,030.00 m/s   
99+

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
Cu   
Au   

Isotopes
  
  

Known Isotopes
29   
10
36   
3

Electronegativity
  
  

Pauling Electronegativity
1.90   
11
2.54   
1

Sanderson Electronegativity
1.98   
9
Not Available   

Allred Rochow Electronegativity
1.75   
3
1.42   
18

Mulliken-Jaffe Electronegativity
1.49   
14
1.87   
7

Allen Electronegativity
1.85   
9
1.92   
5

Electropositivity
  
  

Pauling Electropositivity
2.10   
99+
1.46   
99+

Ionization Energies
  
  

1st Energy Level
745.50 kJ/mol   
22
890.10 kJ/mol   
8

2nd Energy Level
1,957.90 kJ/mol   
15
1,980.00 kJ/mol   
12

3rd Energy Level
3,555.00 kJ/mol   
15
Not Available   

Electrochemical Equivalent
1.19 g/amp-hr   
99+
2.45 g/amp-hr   
21

Electron Work Function
4.65 eV   
11
5.10 eV   
4

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, 
?
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
  

Mechanical Properties

Density
  
  

Density At Room Temperature
8.96 g/cm3   
99+
19.30 g/cm3   
15

Density When Liquid (at m.p.)
8.02 g/cm3   
27
17.31 g/cm3   
6

Vapor Pressure
  
  

Vapor Pressure at 1000 K
1.53 (Pa)   
8
0.00 (Pa)   
23

Vapor Pressure at 2000 K
Not Available   
67.00 (Pa)   
4

Tensile Strength
Not Available   
120.00 MPa   
15

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
48.00 GPa   
15
27.00 GPa   
27

Bulk Modulus
140.00 GPa   
12
180.00 GPa   
9

Young's Modulus
120.00 GPa   
17
79.00 GPa   
24

Poisson Ratio
0.34   
10
0.40   
4

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
  
?
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
Cu   
Au   

Group Number
11   
7
11   
7

Period Number
4   
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
29   
99+
79   
37

Atomic Weight
63.55 amu   
99+
196.97 amu   
33

Atomic Volume
7.10 cm3/mol   
99+
10.20 cm3/mol   
99+

Electron Configuration
[Ar] 3d10 4s1   
[Xe] 4f14 5d10 6s1   

Valence Electron Potential
34.00 (-eV)   
99+
43.40 (-eV)   
99+

Atom
  
  

Number of Protons
29   
99+
79   
37

Number of Neutrons
35   
99+
118   
23

Number of Electrons
29   
99+
79   
37

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-Copper.jpg#100   
FCC-Crystal-Structure-of-Gold.jpg#100   

Radius of an Atom
  
  

Atomic Radius
128.00 pm   
99+
151.00 pm   
32

Covalent Radius
132.00 pm   
99+
144.00 pm   
40

Van der Waals Radius
140.00 pm   
99+
166.00 pm   
39

Lattice Constant
361.49 pm   
35
407.82 pm   
21

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
1.61   
4

Adjacent Atomic Numbers
  
  

Next Element
Zinc
  
Mercury
  

Previous Element
Nickel
  
Platinum
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
16.78 nΩ·m   
99+
2.20 nΩ·m   
99+

Electrical Conductivity
0.60 106/cm Ω   
2
0.45 106/cm Ω   
3

Electron Affinity
222.80 kJ/mol   
1
222.80 kJ/mol   
1

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
8.89   
34
19.32   
8

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
1.256629 * 10-6 H/m   
5
Not Available   

Susceptibility
-9.63 * 10-6   
4
Not Available   

Thermal Properties

Specific Heat
0.38 J/(kg K)   
15
0.13 J/(kg K)   
39

Thermal Conductivity
401.00 W/m·K   
2
318.00 W/m·K   
3

Critical Temperature
Not Available   
Not Available   

Molar Heat Capacity
24.44 J/mol·K   
99+
25.42 J/mol·K   
40

Thermal Expansion
16.50 µm/(m·K)   
25
14.20 µm/(m·K)   
26

Standard Molar Entropy
33.20 J/mol.K   
99+
47.40 J/mol.K   
32

Enthalpy
  
  

Enthalpy of Vaporization
283.70 kJ/mol   
33
324.40 kJ/mol   
27

Enthalpy of Fusion
7.11 kJ/mol   
99+
12.55 kJ/mol   
27

Enthalpy of Atomization
338.90 kJ/mol   
29
364.00 kJ/mol   
25

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