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Properties of Rubidium and Ytterbium

Rubidium
Ytterbium
Properties of Ytterbium & Rubidium


Physical Properties
Melting Point
38.89 °C   
99+
824.00 °C   
99+
Boiling Point
688.00 °C   
99+
1,196.00 °C   
99+
Hardness
  
  
Mohs Hardness
0.30   
24
Not Available   
Brinell Hardness
0.22 MPa   
99+
343.00 MPa   
31
Vickers Hardness
Not Available   
206.00 MPa   
33
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
Not Available   
Speed of Sound
1,300.00 m/s   
99+
1,590.00 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
Rb   
Yb   
Isotopes
  
  
Known Isotopes
29   
10
30   
9
Electronegativity
  
  
Pauling Electronegativity
0.82   
99+
Not Available   
Sanderson Electronegativity
0.31   
32
Not Available   
Allred Rochow Electronegativity
0.89   
40
1.06   
33
Mulliken-Jaffe Electronegativity
0.69   
24
Not Available   
Allen Electronegativity
0.71   
99+
Not Available   
Electropositivity
  
  
Pauling Electropositivity
3.18   
3
Not Available   
Ionization Energies
  
  
1st Energy Level
403.00 kJ/mol   
99+
603.40 kJ/mol   
99+
2nd Energy Level
2,633.00 kJ/mol   
6
1,174.80 kJ/mol   
99+
3rd Energy Level
3,860.00 kJ/mol   
11
2,417.00 kJ/mol   
99+
Electrochemical Equivalent
3.19 g/amp-hr   
14
2.15 g/amp-hr   
25
Electron Work Function
2.16 eV   
99+
Not Available   
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, 
?
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   
?
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
1.53 g/cm3   
99+
6.90 g/cm3   
99+
Density When Liquid (at m.p.)
1.46 g/cm3   
99+
6.21 g/cm3   
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
Not Available   
Not Available   
Tensile Strength
Not Available   
58.00 MPa   
18
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
9.90 GPa   
99+
Bulk Modulus
2.50 GPa   
99+
30.50 GPa   
39
Young's Modulus
2.40 GPa   
99+
23.90 GPa   
99+
Poisson Ratio
Not Available   
0.21   
33
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   
?
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
Rb   
Yb   
Group Number
1   
17
Not Available   
Period Number
5   
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
37   
99+
70   
99+
Atomic Weight
85.47 amu   
99+
173.05 amu   
99+
Atomic Volume
55.90 cm3/mol   
2
24.79 cm3/mol   
9
Electron Configuration
[Kr] 5s1   
[Xe] 4f14 6s2   
Valence Electron Potential
9.47 (-eV)   
99+
50.30 (-eV)   
27
Atom
  
  
Number of Protons
37   
99+
70   
99+
Number of Neutrons
48   
99+
103   
31
Number of Electrons
37   
99+
70   
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)   
?
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-Ytterbium.jpg#100   
Radius of an Atom
  
  
Atomic Radius
248.00 pm   
2
176.00 pm   
18
Covalent Radius
220.00 pm   
4
187.00 pm   
20
Van der Waals Radius
303.00 pm   
3
242.00 pm   
12
Lattice Constant
558.50 pm   
10
548.47 pm   
11
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
Strontium
  
Lutetium
  
Previous Element
Gallium
  
Thulium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
128.00 nΩ·m   
26
0.25 nΩ·m   
99+
Electrical Conductivity
0.08 106/cm Ω   
24
0.04 106/cm Ω   
38
Electron Affinity
46.90 kJ/mol   
24
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
1.53   
99+
6.97   
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
0.36 J/(kg K)   
17
0.15 J/(kg K)   
36
Thermal Conductivity
58.20 W/m·K   
26
38.50 W/m·K   
35
Critical Temperature
2,093.00 K   
4
26.30 K   
7
Molar Heat Capacity
31.06 J/mol·K   
5
26.74 J/mol·K   
25
Thermal Expansion
90.00 µm/(m·K)   
2
26.30 µm/(m·K)   
14
Standard Molar Entropy
76.80 J/mol.K   
5
59.90 J/mol.K   
21
Enthalpy
  
  
Enthalpy of Vaporization
69.20 kJ/mol   
99+
128.90 kJ/mol   
99+
Enthalpy of Fusion
2.19 kJ/mol   
99+
7.66 kJ/mol   
99+
Enthalpy of Atomization
82.00 kJ/mol   
99+
180.00 kJ/mol   
99+
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