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Properties of Iridium and Yttrium

Iridium
Yttrium
Properties of Yttrium & Iridium


Physical Properties
Melting Point
2,410.00 °C   
7
1,523.00 °C   
27
Boiling Point
4,527.00 °C   
10
3,337.00 °C   
21
Hardness
  
  
Mohs Hardness
6.50   
5
Not Available   
Brinell Hardness
1,670.00 MPa   
5
589.00 MPa   
22
Vickers Hardness
1,760.00 MPa   
3
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
78.00 %   
6
Not Available   
Speed of Sound
4,825.00 m/s   
13
3,300.00 m/s   
23
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
Ir   
Y   
Isotopes
  
  
Known Isotopes
34   
5
19   
20
Electronegativity
  
  
Pauling Electronegativity
2.20   
4
1.22   
38
Sanderson Electronegativity
Not Available   
0.65   
29
Allred Rochow Electronegativity
1.55   
11
1.11   
29
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
1.68   
17
1.12   
38
Electropositivity
  
  
Pauling Electropositivity
1.80   
99+
2.78   
16
Ionization Energies
  
  
1st Energy Level
880.00 kJ/mol   
9
600.00 kJ/mol   
99+
2nd Energy Level
1,600.00 kJ/mol   
35
1,180.00 kJ/mol   
99+
3rd Energy Level
Not Available   
1,980.00 kJ/mol   
99+
Electrochemical Equivalent
1.14 g/amp-hr   
99+
1.11 g/amp-hr   
99+
Electron Work Function
4.55 eV   
13
3.10 eV   
35
Other Chemical Properties
?
Flammable metals have ability to burn or ignite, causing fire or combustion.Flammable, 
?
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   
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
Flammable metals have ability to burn or ignite, causing fire or combustion.Flammable, 
?
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
22.56 g/cm3   
10
4.47 g/cm3   
99+
Density When Liquid (at m.p.)
19.00 g/cm3   
3
4.24 g/cm3   
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
32
Vapor Pressure at 2000 K
0.00 (Pa)   
25
4.27 (Pa)   
10
Tensile Strength
2,000.00 MPa   
2
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
210.00 GPa   
2
25.60 GPa   
30
Bulk Modulus
320.00 GPa   
3
41.20 GPa   
30
Young's Modulus
528.00 GPa   
1
63.50 GPa   
32
Poisson Ratio
0.26   
22
0.24   
26
Other Mechanical Properties
NA   
?
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
Ir   
Y   
Group Number
9   
9
3   
15
Period Number
6   
5   
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
77   
39
39   
99+
Atomic Weight
192.22 amu   
34
88.91 amu   
99+
Atomic Volume
9.53 cm3/mol   
99+
19.80 cm3/mol   
21
Electron Configuration
[Xe] 4f14 5d7 6s2   
[Kr] 4d1 5s2   
Valence Electron Potential
140.00 (-eV)   
5
48.00 (-eV)   
30
Atom
  
  
Number of Protons
74   
99+
39   
99+
Number of Neutrons
110   
27
50   
99+
Number of Electrons
74   
99+
39   
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)   
?
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)   
Crystal Lattice
FCC-Crystal-Structure-of-Iridium.jpg#100   
HCP-Crystal-Structure-of-Yttrium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
136.00 pm   
99+
180.00 pm   
14
Covalent Radius
141.00 pm   
99+
190.00 pm   
18
Van der Waals Radius
202.00 pm   
27
200.00 pm   
28
Lattice Constant
383.90 pm   
26
364.74 pm   
31
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.57   
16
Adjacent Atomic Numbers
  
  
Next Element
Platinum
  
Zirconium
  
Previous Element
Osmium
  
Strontium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
47.10 nΩ·m   
99+
596.00 nΩ·m   
8
Electrical Conductivity
0.19 106/cm Ω   
10
0.02 106/cm Ω   
99+
Electron Affinity
151.00 kJ/mol   
4
29.60 kJ/mol   
30
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
21.78   
3
4.47   
99+
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
0.13 J/(kg K)   
39
0.30 J/(kg K)   
18
Thermal Conductivity
147.00 W/m·K   
10
17.20 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
25.10 J/mol·K   
99+
26.53 J/mol·K   
27
Thermal Expansion
6.40 µm/(m·K)   
99+
10.60 µm/(m·K)   
37
Standard Molar Entropy
35.50 J/mol.K   
99+
44.40 J/mol.K   
33
Enthalpy
  
  
Enthalpy of Vaporization
799.10 kJ/mol   
1
393.00 kJ/mol   
18
Enthalpy of Fusion
35.23 kJ/mol   
1
17.15 kJ/mol   
16
Enthalpy of Atomization
837.00 kJ/mol   
1
418.00 kJ/mol   
18
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