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Properties of Gold and Copper


Properties of Copper & Gold


Physical Properties

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

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

Hardness
  
  

Mohs Hardness
2.50   
14
3.00   
12

Brinell Hardness
194.00 MPa   
99+
235.00 MPa   
38

Vickers Hardness
216.00 MPa   
31
343.00 MPa   
28

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
95.00 %   
2
90.00 %   
3

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

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
Au   
Cu   

Isotopes
  
  

Known Isotopes
36   
3
29   
10

Electronegativity
  
  

Pauling Electronegativity
2.54   
1
1.90   
11

Sanderson Electronegativity
Not Available   
1.98   
9

Allred Rochow Electronegativity
1.42   
18
1.75   
3

Mulliken-Jaffe Electronegativity
1.87   
7
1.49   
14

Allen Electronegativity
1.92   
5
1.85   
9

Electropositivity
  
  

Pauling Electropositivity
1.46   
99+
2.10   
99+

Ionization Energies
  
  

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

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

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

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

Electron Work Function
5.10 eV   
4
4.65 eV   
11

Other Chemical Properties
?
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
  
?
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
  

Mechanical Properties

Density
  
  

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

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

Vapor Pressure
  
  

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

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

Tensile Strength
120.00 MPa   
15
Not Available   

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
27.00 GPa   
27
48.00 GPa   
15

Bulk Modulus
180.00 GPa   
9
140.00 GPa   
12

Young's Modulus
79.00 GPa   
24
120.00 GPa   
17

Poisson Ratio
0.40   
4
0.34   
10

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
Au   
Cu   

Group Number
11   
7
11   
7

Period Number
6   
4   

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
79   
37
29   
99+

Atomic Weight
196.97 amu   
33
63.55 amu   
99+

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

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

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

Atom
  
  

Number of Protons
79   
37
29   
99+

Number of Neutrons
118   
23
35   
99+

Number of Electrons
79   
37
29   
99+

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

Radius of an Atom
  
  

Atomic Radius
151.00 pm   
32
128.00 pm   
99+

Covalent Radius
144.00 pm   
40
132.00 pm   
99+

Van der Waals Radius
166.00 pm   
39
140.00 pm   
99+

Lattice Constant
407.82 pm   
21
361.49 pm   
35

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

Lattice C/A Ratio
1.61   
4
Not Available   

Adjacent Atomic Numbers
  
  

Next Element
Mercury
  
Zinc
  

Previous Element
Platinum
  
Nickel
  

Magnetic Properties

Electrical Properties
  
  

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

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

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
19.32   
8
8.89   
34

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   
1.256629 * 10-6 H/m   
5

Susceptibility
Not Available   
-9.63 * 10-6   
4

Thermal Properties

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

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

Critical Temperature
Not Available   
Not Available   

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

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

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

Enthalpy
  
  

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

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

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

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