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Properties of Silver and Tantalum

Silver
Tantalum
Properties of Tantalum & Silver


Physical Properties
Melting Point
961.93 °C   
99+
2,996.00 °C   
4
Boiling Point
2,212.00 °C   
99+
5,425.00 °C   
4
Hardness
  
  
Mohs Hardness
2.50   
14
6.50   
5
Brinell Hardness
251.00 MPa   
37
440.00 MPa   
28
Vickers Hardness
229.00 MPa   
30
870.00 MPa   
12
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
97.00 %   
1
78.00 %   
6
Speed of Sound
2,680.00 m/s   
34
3,400.00 m/s   
22
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
Ag   
Ta   
Isotopes
  
  
Known Isotopes
36   
3
31   
8
Electronegativity
  
  
Pauling Electronegativity
1.93   
9
1.50   
27
Sanderson Electronegativity
1.83   
11
Not Available   
Allred Rochow Electronegativity
1.42   
18
1.33   
22
Mulliken-Jaffe Electronegativity
1.47   
15
Not Available   
Allen Electronegativity
1.87   
7
1.34   
33
Electropositivity
  
  
Pauling Electropositivity
2.07   
99+
2.50   
27
Ionization Energies
  
  
1st Energy Level
731.00 kJ/mol   
27
761.00 kJ/mol   
18
2nd Energy Level
2,070.00 kJ/mol   
11
1,500.00 kJ/mol   
40
3rd Energy Level
3,361.00 kJ/mol   
19
Not Available   
Electrochemical Equivalent
4.02 g/amp-hr   
7
1.35 g/amp-hr   
99+
Electron Work Function
4.26 eV   
20
4.25 eV   
21
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   
?
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, 
?
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, 
?
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
10.49 g/cm3   
35
16.69 g/cm3   
18
Density When Liquid (at m.p.)
9.32 g/cm3   
21
15.00 g/cm3   
9
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
14
Not Available   
Vapor Pressure at 2000 K
Not Available   
0.00 (Pa)   
31
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
30.00 GPa   
23
69.00 GPa   
13
Bulk Modulus
100.00 GPa   
16
200.00 GPa   
8
Young's Modulus
83.00 GPa   
23
186.00 GPa   
13
Poisson Ratio
0.37   
7
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   
Periodic Table
Symbol
Ag   
Ta   
Group Number
11   
7
5   
13
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
47   
99+
73   
99+
Atomic Weight
107.87 amu   
99+
180.95 amu   
38
Atomic Volume
10.30 cm3/mol   
99+
10.90 cm3/mol   
99+
Electron Configuration
[Kr] 4d10 5s1   
[Xe] 4f14 5d3 6s2   
Valence Electron Potential
11.40 (-eV)   
99+
110.00 (-eV)   
7
Atom
  
  
Number of Protons
47   
99+
73   
99+
Number of Neutrons
61   
99+
108   
28
Number of Electrons
47   
99+
73   
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)   
?
BCC is a basis type of cubic crystal structure. In crystallography, the cubic crystals structure is a crystal system where the unit cell has a cube shaped structure. This is one of the simplest crystal structure found in crystals of metal.Body Centered Cubic (BCC)   
Crystal Lattice
FCC-Crystal-Structure-of-Silver.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
144.00 pm   
36
146.00 pm   
35
Covalent Radius
145.00 pm   
39
170.00 pm   
25
Van der Waals Radius
172.00 pm   
38
200.00 pm   
28
Lattice Constant
408.53 pm   
20
330.13 pm   
99+
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
Cadmium
  
Tungsten
  
Previous Element
Palladium
  
Hafnium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
15.87 nΩ·m   
99+
131.00 nΩ·m   
25
Electrical Conductivity
0.63 106/cm Ω   
1
0.08 106/cm Ω   
27
Electron Affinity
125.60 kJ/mol   
5
31.00 kJ/mol   
29
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
10.50   
26
16.65   
11
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
0.00   
5
Not Available   
Thermal Properties
Specific Heat
0.24 J/(kg K)   
25
0.14 J/(kg K)   
37
Thermal Conductivity
429.00 W/m·K   
1
57.50 W/m·K   
27
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
25.35 J/mol·K   
99+
25.36 J/mol·K   
99+
Thermal Expansion
18.90 µm/(m·K)   
23
6.30 µm/(m·K)   
99+
Standard Molar Entropy
42.60 J/mol.K   
35
41.50 J/mol.K   
37
Enthalpy
  
  
Enthalpy of Vaporization
255.10 kJ/mol   
37
753.10 kJ/mol   
2
Enthalpy of Fusion
11.30 kJ/mol   
31
31.40 kJ/mol   
3
Enthalpy of Atomization
284.50 kJ/mol   
37
782.00 kJ/mol   
3
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