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Properties of Rhenium and Lead

Rhenium
Lead
Properties of Lead & Rhenium


Physical Properties
Melting Point
3,180.00 °C   
2
327.50 °C   
99+
Boiling Point
5,627.00 °C   
2
1,740.00 °C   
99+
Hardness
  
  
Mohs Hardness
7.00   
3
1.50   
18
Brinell Hardness
1,320.00 MPa   
8
38.00 MPa   
99+
Vickers Hardness
1,350.00 MPa   
7
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
4,700.00 m/s   
15
1,190.00 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
Re   
Pb   
Isotopes
  
  
Known Isotopes
33   
6
35   
4
Electronegativity
  
  
Pauling Electronegativity
1.90   
11
1.87   
13
Sanderson Electronegativity
Not Available   
2.29   
4
Allred Rochow Electronegativity
1.46   
15
1.55   
11
Mulliken-Jaffe Electronegativity
Not Available   
2.41   
2
Allen Electronegativity
1.60   
21
1.85   
8
Electropositivity
  
  
Pauling Electropositivity
2.10   
99+
1.67   
99+
Ionization Energies
  
  
1st Energy Level
760.00 kJ/mol   
20
715.60 kJ/mol   
31
2nd Energy Level
1,260.00 kJ/mol   
99+
1,450.50 kJ/mol   
99+
3rd Energy Level
2,510.00 kJ/mol   
99+
3,081.50 kJ/mol   
23
Electrochemical Equivalent
0.99 g/amp-hr   
99+
3.87 g/amp-hr   
9
Electron Work Function
4.96 eV   
7
4.25 eV   
21
Other Chemical Properties
?
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, 
?
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, 
?
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
21.02 g/cm3   
12
11.34 g/cm3   
33
Density When Liquid (at m.p.)
18.90 g/cm3   
4
10.66 g/cm3   
15
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
1.64 (Pa)   
7
Vapor Pressure at 2000 K
0.00 (Pa)   
29
Not Available   
Tensile Strength
1,070.00 MPa   
3
12.00 MPa   
20
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
178.00 GPa   
3
5.60 GPa   
99+
Bulk Modulus
370.00 GPa   
2
46.00 GPa   
24
Young's Modulus
463.00 GPa   
2
16.00 GPa   
99+
Poisson Ratio
0.30   
14
0.44   
3
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
Re   
Pb   
Group Number
7   
11
14   
4
Period Number
6   
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 p-block is on the right side of the periodic table and includes elements from the six columns beginning with column 13 and ending with column 18. Helium, though being in the top of group 18, is not included in the p-block.p 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   
?
All post transition metals are placed in group number 13, 14 and 15 of periodic table. In fact, they are located between Transition Metals and Metalloids. Post transition metals have very poor mechanical properties.Post-​Transition   
Atomic Properties
Atomic Number
75   
99+
82   
34
Atomic Weight
186.21 amu   
36
207.20 amu   
30
Atomic Volume
8.85 cm3/mol   
99+
18.17 cm3/mol   
27
Electron Configuration
[Xe] 4f14 5d5 6s2   
[Xe] 4f14 5d10 6s2 6p2   
Valence Electron Potential
180.00 (-eV)   
3
24.20 (-eV)   
99+
Atom
  
  
Number of Protons
75   
40
82   
34
Number of Neutrons
111   
26
125   
19
Number of Electrons
75   
40
82   
34
Crystal Structure
?
The hexagonal crystal system consists of the 7 point groups such that all their space groups have the hexagonal lattice as underlying lattice. The hexagonal crystal family consists of the 12 point groups such that at least one of their space groups has theHexagonal Close Packed (HCP)   
?
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
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Lead.jpg#100   
Radius of an Atom
  
  
Atomic Radius
137.00 pm   
40
175.00 pm   
19
Covalent Radius
151.00 pm   
34
146.00 pm   
38
Van der Waals Radius
200.00 pm   
28
202.00 pm   
27
Lattice Constant
276.10 pm   
99+
495.08 pm   
16
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.62   
3
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Osmium
  
Bismuth
  
Previous Element
Tungsten
  
Thallium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
193.00 nΩ·m   
20
208.00 nΩ·m   
16
Electrical Conductivity
0.05 106/cm Ω   
33
0.05 106/cm Ω   
36
Electron Affinity
14.50 kJ/mol   
35
35.10 kJ/mol   
28
Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
?
Poor conductor metals have moderate resistance to electric currents. They can conduct electric current through them with very low efficiency.Poor Conductor   
Magnetic Characteristics
  
  
Specific Gravity
21.02   
5
11.35   
25
Magnetic Ordering
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic   
?
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   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.13 J/(kg K)   
39
0.13 J/(kg K)   
39
Thermal Conductivity
48.00 W/m·K   
31
35.30 W/m·K   
38
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
25.48 J/mol·K   
38
26.65 J/mol·K   
26
Thermal Expansion
6.20 µm/(m·K)   
99+
28.90 µm/(m·K)   
13
Standard Molar Entropy
36.90 J/mol.K   
99+
64.80 J/mol.K   
17
Enthalpy
  
  
Enthalpy of Vaporization
707.10 kJ/mol   
3
179.40 kJ/mol   
99+
Enthalpy of Fusion
33.05 kJ/mol   
2
4.77 kJ/mol   
99+
Enthalpy of Atomization
791.00 kJ/mol   
2
194.60 kJ/mol   
99+
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