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Properties of Rutherfordium and Cesium

Rutherfordium
Cesium
Properties of Cesium & Rutherfordium


Physical Properties
Melting Point
2,100.00 °C   
11
28.50 °C   
99+
Boiling Point
5,500.00 °C   
3
678.40 °C   
99+
Hardness
  
  
Mohs Hardness
Not Available   
0.20   
25
Brinell Hardness
Not Available   
0.14 MPa   
99+
Vickers Hardness
Not Available   
Not Available   
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
Rf   
Cs   
Isotopes
  
  
Known Isotopes
13   
26
36   
3
Electronegativity
  
  
Pauling Electronegativity
Not Available   
0.79   
99+
Sanderson Electronegativity
Not Available   
0.22   
33
Allred Rochow Electronegativity
Not Available   
0.86   
99+
Mulliken-Jaffe Electronegativity
Not Available   
0.62   
26
Allen Electronegativity
Not Available   
0.66   
99+
Electropositivity
  
  
Pauling Electropositivity
Not Available   
3.21   
2
Ionization Energies
  
  
1st Energy Level
579.90 kJ/mol   
99+
375.70 kJ/mol   
99+
2nd Energy Level
1,389.40 kJ/mol   
99+
2,234.30 kJ/mol   
8
3rd Energy Level
2,296.40 kJ/mol   
99+
3,400.00 kJ/mol   
16
Electrochemical Equivalent
Not Available   
4.96 g/amp-hr   
3
Electron Work Function
Not Available   
2.14 eV   
99+
Other Chemical Properties
?
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, 
?
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
23.20 g/cm3   
8
1.93 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
1.84 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   
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
Not Available   
Bulk Modulus
Not Available   
1.60 GPa   
99+
Young's Modulus
Not Available   
1.70 GPa   
99+
Poisson Ratio
Not Available   
Not Available   
Other Mechanical Properties
Unknown   
?
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
Rf   
Cs   
Group Number
4   
14
1   
17
Period Number
7   
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 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   
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   
?
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   
Atomic Properties
Atomic Number
104   
14
55   
99+
Atomic Weight
267.00 amu   
11
132.91 amu   
99+
Atomic Volume
Not Available   
71.07 cm3/mol   
1
Electron Configuration
[Rn] 5f14 6d2 7s2   
[Xe] 6s1   
Valence Electron Potential
Not Available   
8.62 (-eV)   
99+
Atom
  
  
Number of Protons
104   
14
55   
99+
Number of Neutrons
157   
7
78   
99+
Number of Electrons
104   
14
55   
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)   
?
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)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
150.00 pm   
33
265.00 pm   
1
Covalent Radius
157.00 pm   
31
244.00 pm   
2
Van der Waals Radius
Not Available   
343.00 pm   
2
Lattice Constant
Not Available   
614.10 pm   
5
Lattice Angles
NA   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Dubnium
  
Barium
  
Previous Element
Lawrencium
  
Tin
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
Not Available   
205.00 nΩ·m   
17
Electrical Conductivity
Not Available   
0.05 106/cm Ω   
35
Electron Affinity
Not Available   
45.50 kJ/mol   
25
Electrical Property
Unknown   
?
Semiconductor metals have conductivity between that of a conductor and an insulator.Semiconductor   
Magnetic Characteristics
  
  
Specific Gravity
Not Available   
1.87   
99+
Magnetic Ordering
Unknown   
?
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
Not Available   
0.24 J/(kg K)   
23
Thermal Conductivity
Not Available   
35.90 W/m·K   
36
Critical Temperature
Not Available   
1,938.00 K   
5
Molar Heat Capacity
Not Available   
32.21 J/mol·K   
4
Thermal Expansion
Not Available   
97.00 µm/(m·K)   
1
Standard Molar Entropy
Not Available   
85.20 J/mol.K   
3
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
65.90 kJ/mol   
99+
Enthalpy of Fusion
Not Available   
2.10 kJ/mol   
99+
Enthalpy of Atomization
Not Available   
78.20 kJ/mol   
99+
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