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Properties of Rubidium and Silver

Rubidium
Silver
Properties of Silver & Rubidium


Physical Properties
Melting Point
38.89 °C   
99+
961.93 °C   
99+
Boiling Point
688.00 °C   
99+
2,212.00 °C   
99+
Hardness
  
  
Mohs Hardness
0.30   
24
2.50   
14
Brinell Hardness
0.22 MPa   
99+
251.00 MPa   
37
Vickers Hardness
Not Available   
229.00 MPa   
30
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
97.00 %   
1
Speed of Sound
1,300.00 m/s   
99+
2,680.00 m/s   
34
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   
Ag   
Isotopes
  
  
Known Isotopes
29   
10
36   
3
Electronegativity
  
  
Pauling Electronegativity
0.82   
99+
1.93   
9
Sanderson Electronegativity
0.31   
32
1.83   
11
Allred Rochow Electronegativity
0.89   
40
1.42   
18
Mulliken-Jaffe Electronegativity
0.69   
24
1.47   
15
Allen Electronegativity
0.71   
99+
1.87   
7
Electropositivity
  
  
Pauling Electropositivity
3.18   
3
2.07   
99+
Ionization Energies
  
  
1st Energy Level
403.00 kJ/mol   
99+
731.00 kJ/mol   
27
2nd Energy Level
2,633.00 kJ/mol   
6
2,070.00 kJ/mol   
11
3rd Energy Level
3,860.00 kJ/mol   
11
3,361.00 kJ/mol   
19
Electrochemical Equivalent
3.19 g/amp-hr   
14
4.02 g/amp-hr   
7
Electron Work Function
2.16 eV   
99+
4.26 eV   
20
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   
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
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, 
?
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+
10.49 g/cm3   
35
Density When Liquid (at m.p.)
1.46 g/cm3   
99+
9.32 g/cm3   
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
14
Vapor Pressure at 2000 K
Not Available   
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
30.00 GPa   
23
Bulk Modulus
2.50 GPa   
99+
100.00 GPa   
16
Young's Modulus
2.40 GPa   
99+
83.00 GPa   
23
Poisson Ratio
Not Available   
0.37   
7
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   
Ag   
Group Number
1   
17
11   
7
Period Number
5   
5   
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 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
?
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   
?
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
37   
99+
47   
99+
Atomic Weight
85.47 amu   
99+
107.87 amu   
99+
Atomic Volume
55.90 cm3/mol   
2
10.30 cm3/mol   
99+
Electron Configuration
[Kr] 5s1   
[Kr] 4d10 5s1   
Valence Electron Potential
9.47 (-eV)   
99+
11.40 (-eV)   
99+
Atom
  
  
Number of Protons
37   
99+
47   
99+
Number of Neutrons
48   
99+
61   
99+
Number of Electrons
37   
99+
47   
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-Silver.jpg#100   
Radius of an Atom
  
  
Atomic Radius
248.00 pm   
2
144.00 pm   
36
Covalent Radius
220.00 pm   
4
145.00 pm   
39
Van der Waals Radius
303.00 pm   
3
172.00 pm   
38
Lattice Constant
558.50 pm   
10
408.53 pm   
20
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
  
Cadmium
  
Previous Element
Gallium
  
Palladium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
128.00 nΩ·m   
26
15.87 nΩ·m   
99+
Electrical Conductivity
0.08 106/cm Ω   
24
0.63 106/cm Ω   
1
Electron Affinity
46.90 kJ/mol   
24
125.60 kJ/mol   
5
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+
10.50   
26
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   
?
Diamagnetic metals produce a magnetic field opposite to the applied magnetic field. Thus, they are repelled by magnets and show magnetic nature.Diamagnetic   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
0.00   
5
Thermal Properties
Specific Heat
0.36 J/(kg K)   
17
0.24 J/(kg K)   
25
Thermal Conductivity
58.20 W/m·K   
26
429.00 W/m·K   
1
Critical Temperature
2,093.00 K   
4
Not Available   
Molar Heat Capacity
31.06 J/mol·K   
5
25.35 J/mol·K   
99+
Thermal Expansion
90.00 µm/(m·K)   
2
18.90 µm/(m·K)   
23
Standard Molar Entropy
76.80 J/mol.K   
5
42.60 J/mol.K   
35
Enthalpy
  
  
Enthalpy of Vaporization
69.20 kJ/mol   
99+
255.10 kJ/mol   
37
Enthalpy of Fusion
2.19 kJ/mol   
99+
11.30 kJ/mol   
31
Enthalpy of Atomization
82.00 kJ/mol   
99+
284.50 kJ/mol   
37
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