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Properties of Yttrium and Erbium


Properties of Erbium & Yttrium


Physical Properties

Melting Point
1,523.00 °C   
27
1,522.00 °C   
28

Boiling Point
3,337.00 °C   
21
2,510.00 °C   
99+

Hardness
  
  

Mohs Hardness
Not Available   
Not Available   

Brinell Hardness
589.00 MPa   
22
814.00 MPa   
11

Vickers Hardness
Not Available   
589.00 MPa   
19

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
Not Available   
Not Available   

Speed of Sound
3,300.00 m/s   
23
2,830.00 m/s   
28

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
Y   
Er   

Isotopes
  
  

Known Isotopes
19   
20
31   
8

Electronegativity
  
  

Pauling Electronegativity
1.22   
38
1.24   
36

Sanderson Electronegativity
0.65   
29
Not Available   

Allred Rochow Electronegativity
1.11   
29
1.11   
29

Mulliken-Jaffe Electronegativity
Not Available   
Not Available   

Allen Electronegativity
1.12   
38
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.78   
16
2.76   
18

Ionization Energies
  
  

1st Energy Level
600.00 kJ/mol   
99+
589.30 kJ/mol   
99+

2nd Energy Level
1,180.00 kJ/mol   
99+
1,150.00 kJ/mol   
99+

3rd Energy Level
1,980.00 kJ/mol   
99+
2,194.00 kJ/mol   
99+

Electrochemical Equivalent
1.11 g/amp-hr   
99+
2.08 g/amp-hr   
28

Electron Work Function
3.10 eV   
35
Not Available   

Other Chemical Properties
?
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
  
?
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
4.47 g/cm3   
99+
9.07 g/cm3   
99+

Density When Liquid (at m.p.)
4.24 g/cm3   
99+
8.86 g/cm3   
23

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
32
0.00 (Pa)   
20

Vapor Pressure at 2000 K
4.27 (Pa)   
10
Not Available   

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
25.60 GPa   
30
28.30 GPa   
25

Bulk Modulus
41.20 GPa   
30
44.40 GPa   
27

Young's Modulus
63.50 GPa   
32
69.90 GPa   
29

Poisson Ratio
0.24   
26
0.24   
28

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
  

Periodic Table

Symbol
Y   
Er   

Group Number
3   
15
Not Available   

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 f-block is in the center-left of a 32-column periodic table but in the footnoted appendage of 18-column tables. These elements are not generally considered as part of any group. They are often called inner transition metals.f 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
  
?
Total 15 metals are included in Lanthanide series from Lanthanum to Lutetium. Lanthanide series is located under f and d block of the periodic table.Lanthanide
  

Atomic Properties

Atomic Number
39   
99+
68   
99+

Atomic Weight
88.91 amu   
99+
167.26 amu   
99+

Atomic Volume
19.80 cm3/mol   
21
18.40 cm3/mol   
25

Electron Configuration
[Kr] 4d1 5s2   
[Xe] 4f12 6s2   

Valence Electron Potential
48.00 (-eV)   
30
49.00 (-eV)   
29

Atom
  
  

Number of Protons
39   
99+
68   
99+

Number of Neutrons
50   
99+
99   
33

Number of Electrons
39   
99+
68   
99+

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)
  
?
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
HCP-Crystal-Structure-of-Yttrium.jpg#100   
HCP-Crystal-Structure-of-Erbium.jpg#100   

Radius of an Atom
  
  

Atomic Radius
180.00 pm   
14
176.00 pm   
18

Covalent Radius
190.00 pm   
18
189.00 pm   
19

Van der Waals Radius
200.00 pm   
28
Not Available   

Lattice Constant
364.74 pm   
31
355.88 pm   
39

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
1.57   
16
1.57   
17

Adjacent Atomic Numbers
  
  

Next Element
Zirconium
  
Thulium
  

Previous Element
Strontium
  
Holmium
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
596.00 nΩ·m   
8
0.86 nΩ·m   
99+

Electrical Conductivity
0.02 106/cm Ω   
99+
0.01 106/cm Ω   
99+

Electron Affinity
29.60 kJ/mol   
30
50.00 kJ/mol   
21

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
4.47   
99+
9.07   
32

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
0.30 J/(kg K)   
18
0.17 J/(kg K)   
34

Thermal Conductivity
17.20 W/m·K   
99+
14.50 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Molar Heat Capacity
26.53 J/mol·K   
27
28.12 J/mol·K   
11

Thermal Expansion
10.60 µm/(m·K)   
37
12.20 µm/(m·K)   
31

Standard Molar Entropy
44.40 J/mol.K   
33
73.10 J/mol.K   
11

Enthalpy
  
  

Enthalpy of Vaporization
393.00 kJ/mol   
18
261.00 kJ/mol   
35

Enthalpy of Fusion
17.15 kJ/mol   
16
17.20 kJ/mol   
15

Enthalpy of Atomization
418.00 kJ/mol   
18
314.00 kJ/mol   
33

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