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Properties of Cesium and Lutetium

Cesium
Lutetium
Properties of Lutetium & Cesium


Physical Properties
Melting Point
28.50 °C   
99+
1,652.00 °C   
19
Boiling Point
678.40 °C   
99+
3,402.00 °C   
19
Hardness
  
  
Mohs Hardness
0.20   
25
Not Available   
Brinell Hardness
0.14 MPa   
99+
893.00 MPa   
10
Vickers Hardness
Not Available   
1,160.00 MPa   
8
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
Not Available   
Not Available   
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
Cs   
Lu   
Isotopes
  
  
Known Isotopes
36   
3
35   
4
Electronegativity
  
  
Pauling Electronegativity
0.79   
99+
1.27   
34
Sanderson Electronegativity
0.22   
33
Not Available   
Allred Rochow Electronegativity
0.86   
99+
1.14   
28
Mulliken-Jaffe Electronegativity
0.62   
26
Not Available   
Allen Electronegativity
0.66   
99+
Not Available   
Electropositivity
  
  
Pauling Electropositivity
3.21   
2
2.73   
20
Ionization Energies
  
  
1st Energy Level
375.70 kJ/mol   
99+
523.50 kJ/mol   
99+
2nd Energy Level
2,234.30 kJ/mol   
8
1,340.00 kJ/mol   
99+
3rd Energy Level
3,400.00 kJ/mol   
16
2,022.30 kJ/mol   
99+
Electrochemical Equivalent
4.96 g/amp-hr   
3
2.18 g/amp-hr   
23
Electron Work Function
2.14 eV   
99+
3.30 eV   
33
Other Chemical Properties
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
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, 
?
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
1.93 g/cm3   
99+
9.84 g/cm3   
38
Density When Liquid (at m.p.)
1.84 g/cm3   
99+
9.30 g/cm3   
22
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
33
Vapor Pressure at 2000 K
Not Available   
3.18 (Pa)   
11
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
27.20 GPa   
26
Bulk Modulus
1.60 GPa   
99+
47.60 GPa   
23
Young's Modulus
1.70 GPa   
99+
68.60 GPa   
30
Poisson Ratio
Not Available   
0.26   
21
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   
NA   
Periodic Table
Symbol
Cs   
Lu   
Group Number
1   
17
Not Available   
Period Number
6   
6   
Block
?
The s-block is on the left side of the periodic table that includes elements from the first two columns, the alkali metals (group 1) and alkaline earth metals (group 2), plus helium.s 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
?
All alkali metals are placed under group number 1 and s-block of periodic table. These metals are highly reactive and are found in ores of other metals and minerals. Alkali metals can be easily distinguished from others as these metals have only 1 electronAlkali   
?
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
55   
99+
71   
99+
Atomic Weight
132.91 amu   
99+
174.97 amu   
40
Atomic Volume
71.07 cm3/mol   
1
17.78 cm3/mol   
30
Electron Configuration
[Xe] 6s1   
[Xe] 6s2 4f14 5d1   
Valence Electron Potential
8.62 (-eV)   
99+
50.90 (-eV)   
26
Atom
  
  
Number of Protons
55   
99+
71   
99+
Number of Neutrons
78   
99+
104   
30
Number of Electrons
55   
99+
71   
99+
Crystal Structure
?
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)   
?
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
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
265.00 pm   
1
174.00 pm   
20
Covalent Radius
244.00 pm   
2
187.00 pm   
20
Van der Waals Radius
343.00 pm   
2
221.00 pm   
22
Lattice Constant
614.10 pm   
5
350.31 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.59   
10
Adjacent Atomic Numbers
  
  
Next Element
Barium
  
Hafnium
  
Previous Element
Tin
  
Ytterbium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
205.00 nΩ·m   
17
582.00 nΩ·m   
9
Electrical Conductivity
0.05 106/cm Ω   
35
0.02 106/cm Ω   
99+
Electron Affinity
45.50 kJ/mol   
25
50.00 kJ/mol   
21
Electrical Property
?
Semiconductor metals have conductivity between that of a conductor and an insulator.Semiconductor   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor   
Magnetic Characteristics
  
  
Specific Gravity
1.87   
99+
9.84   
29
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)   
23
0.15 J/(kg K)   
36
Thermal Conductivity
35.90 W/m·K   
36
16.40 W/m·K   
99+
Critical Temperature
1,938.00 K   
5
Not Available   
Molar Heat Capacity
32.21 J/mol·K   
4
26.86 J/mol·K   
24
Thermal Expansion
97.00 µm/(m·K)   
1
9.90 µm/(m·K)   
40
Standard Molar Entropy
85.20 J/mol.K   
3
51.00 J/mol.K   
30
Enthalpy
  
  
Enthalpy of Vaporization
65.90 kJ/mol   
99+
355.90 kJ/mol   
22
Enthalpy of Fusion
2.10 kJ/mol   
99+
18.70 kJ/mol   
13
Enthalpy of Atomization
78.20 kJ/mol   
99+
398.00 kJ/mol   
20
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