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Properties of Rhodium and Tungsten

Rhodium
Tungsten
Properties of Tungsten & Rhodium


Physical Properties
Melting Point
1,966.00 °C   
12
3,410.00 °C   
1
Boiling Point
3,727.00 °C   
17
5,660.00 °C   
1
Hardness
  
  
Mohs Hardness
6.00   
6
7.50   
2
Brinell Hardness
980.00 MPa   
9
2,000.00 MPa   
4
Vickers Hardness
1,100.00 MPa   
9
3,430.00 MPa   
1
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
84.00 %   
4
62.00 %   
13
Speed of Sound
4,700.00 m/s   
15
4,620.00 m/s   
16
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
Rh   
W   
Isotopes
  
  
Known Isotopes
16   
23
33   
6
Electronegativity
  
  
Pauling Electronegativity
2.28   
3
2.36   
2
Sanderson Electronegativity
Not Available   
0.98   
23
Allred Rochow Electronegativity
1.45   
16
1.40   
19
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
1.56   
24
1.47   
29
Electropositivity
  
  
Pauling Electropositivity
1.72   
99+
1.64   
99+
Ionization Energies
  
  
1st Energy Level
719.70 kJ/mol   
29
770.00 kJ/mol   
16
2nd Energy Level
1,740.00 kJ/mol   
26
1,700.00 kJ/mol   
29
3rd Energy Level
2,997.00 kJ/mol   
27
Not Available   
Electrochemical Equivalent
1.28 g/amp-hr   
99+
1.14 g/amp-hr   
99+
Electron Work Function
4.98 eV   
6
4.55 eV   
13
Other Chemical Properties
?
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   
?
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
12.41 g/cm3   
28
19.25 g/cm3   
16
Density When Liquid (at m.p.)
10.70 g/cm3   
14
17.60 g/cm3   
5
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
0.02 (Pa)   
19
0.00 (Pa)   
32
Tensile Strength
951.00 MPa   
5
370.00 MPa   
10
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
150.00 GPa   
6
161.00 GPa   
5
Bulk Modulus
275.00 GPa   
5
310.00 GPa   
4
Young's Modulus
380.00 GPa   
5
411.00 GPa   
4
Poisson Ratio
0.26   
22
0.28   
17
Other Mechanical Properties
?
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
Rh   
W   
Group Number
9   
9
6   
12
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
45   
99+
74   
99+
Atomic Weight
102.91 amu   
99+
183.84 amu   
37
Atomic Volume
8.30 cm3/mol   
99+
9.53 cm3/mol   
99+
Electron Configuration
[Kr] 4d8 5s1   
[Xe] 4f14 5d4 6s2   
Valence Electron Potential
64.00 (-eV)   
22
140.00 (-eV)   
5
Atom
  
  
Number of Protons
45   
99+
74   
99+
Number of Neutrons
58   
99+
110   
27
Number of Electrons
45   
99+
74   
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-Rhodium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
134.00 pm   
99+
139.00 pm   
39
Covalent Radius
142.00 pm   
99+
162.00 pm   
29
Van der Waals Radius
200.00 pm   
28
200.00 pm   
28
Lattice Constant
380.34 pm   
27
316.52 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
Palladium
  
Rhenium
  
Previous Element
Ruthenium
  
Tantalum
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
43.30 nΩ·m   
99+
52.80 nΩ·m   
99+
Electrical Conductivity
0.21 106/cm Ω   
8
0.19 106/cm Ω   
10
Electron Affinity
109.70 kJ/mol   
7
78.60 kJ/mol   
13
Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
?
Under certain conditions, superconductor metals offer zero resistance to electric current it means this type of metals will conduct electricity without any resistance.Superconductor   
Magnetic Characteristics
  
  
Specific Gravity
12.41   
20
19.22   
9
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   
?
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
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.24 J/(kg K)   
22
0.13 J/(kg K)   
39
Thermal Conductivity
150.00 W/m·K   
9
173.00 W/m·K   
7
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
24.98 J/mol·K   
99+
24.27 J/mol·K   
99+
Thermal Expansion
8.20 µm/(m·K)   
99+
4.50 µm/(m·K)   
99+
Standard Molar Entropy
31.50 J/mol.K   
99+
32.60 J/mol.K   
99+
Enthalpy
  
  
Enthalpy of Vaporization
495.40 kJ/mol   
12
799.10 kJ/mol   
1
Enthalpy of Fusion
21.76 kJ/mol   
10
35.23 kJ/mol   
1
Enthalpy of Atomization
556.50 kJ/mol   
12
837.00 kJ/mol   
1
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