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Properties of Cobalt and Rutherfordium

Cobalt
Rutherfordium
Properties of Rutherfordium & Cobalt


Physical Properties
Melting Point
1,495.00 °C   
29
2,100.00 °C   
11
Boiling Point
2,870.00 °C   
34
5,500.00 °C   
3
Hardness
  
  
Mohs Hardness
5.00   
8
Not Available   
Brinell Hardness
470.00 MPa   
26
Not Available   
Vickers Hardness
1,043.00 MPa   
11
Not Available   
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
67.00 %   
11
Not Available   
Speed of Sound
4,720.00 m/s   
14
Not Available   
Allotropes
Yes   
No   
α Allotropes
?
It forms above 417 °C simple cubic (metallic)Α-Cobalt   
Not Available   
β Allotropes
?
It forms below 417 °C hexagonal close packed (hcp) (metallic)Β-Cobalt   
Not Available   
γ Allotropes
Not Available   
Not Available   
Chemical Properties
Chemical Formula
Co   
Rf   
Isotopes
  
  
Known Isotopes
26   
13
13   
26
Electronegativity
  
  
Pauling Electronegativity
1.88   
12
Not Available   
Sanderson Electronegativity
2.56   
1
Not Available   
Allred Rochow Electronegativity
1.70   
5
Not Available   
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
1.84   
10
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.12   
99+
Not Available   
Ionization Energies
  
  
1st Energy Level
760.40 kJ/mol   
19
579.90 kJ/mol   
99+
2nd Energy Level
1,648.00 kJ/mol   
31
1,389.40 kJ/mol   
99+
3rd Energy Level
3,232.00 kJ/mol   
22
2,296.40 kJ/mol   
99+
Electrochemical Equivalent
1.10 g/amp-hr   
99+
Not Available   
Electron Work Function
5.00 eV   
5
Not Available   
Other Chemical Properties
?
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   
?
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
4.51 g/cm3   
99+
23.20 g/cm3   
8
Density When Liquid (at m.p.)
4.11 g/cm3   
99+
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
0.98 (Pa)   
14
Not Available   
Tensile Strength
434.00 MPa   
9
Not Available   
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
44.00 GPa   
17
Not Available   
Bulk Modulus
110.00 GPa   
15
Not Available   
Young's Modulus
116.00 GPa   
18
Not Available   
Poisson Ratio
0.32   
12
Not Available   
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   
Unknown   
Periodic Table
Symbol
Co   
Rf   
Group Number
9   
9
4   
14
Period Number
4   
7   
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 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
?
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   
?
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
22   
99+
104   
14
Atomic Weight
47.87 amu   
99+
267.00 amu   
11
Atomic Volume
10.64 cm3/mol   
99+
Not Available   
Electron Configuration
[Ar] 3d2 4s2   
[Rn] 5f14 6d2 7s2   
Valence Electron Potential
95.20 (-eV)   
10
Not Available   
Atom
  
  
Number of Protons
22   
99+
104   
14
Number of Neutrons
26   
99+
157   
7
Number of Electrons
22   
99+
104   
14
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-Cobalt.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Radius of an Atom
  
  
Atomic Radius
147.00 pm   
34
150.00 pm   
33
Covalent Radius
160.00 pm   
30
157.00 pm   
31
Van der Waals Radius
200.00 pm   
28
Not Available   
Lattice Constant
295.08 pm   
99+
Not Available   
Lattice Angles
π/2, π/2, 2 π/3   
NA   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Nickel
  
Dubnium
  
Previous Element
Iron
  
Lawrencium
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
420.00 nΩ·m   
12
Not Available   
Electrical Conductivity
0.02 106/cm Ω   
99+
Not Available   
Electron Affinity
7.60 kJ/mol   
37
Not Available   
Electrical Property
?
Poor conductor metals have moderate resistance to electric currents. They can conduct electric current through them with very low efficiency.Poor Conductor   
Unknown   
Magnetic Characteristics
  
  
Specific Gravity
4,500.00   
1
Not Available   
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   
Unknown   
Permeability
Not Available   
Not Available   
Susceptibility
Not Available   
Not Available   
Thermal Properties
Specific Heat
0.52 J/(kg K)   
9
Not Available   
Thermal Conductivity
21.90 W/m·K   
99+
Not Available   
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
25.06 J/mol·K   
99+
Not Available   
Thermal Expansion
8.60 µm/(m·K)   
99+
Not Available   
Standard Molar Entropy
27.30 J/mol.K   
99+
Not Available   
Enthalpy
  
  
Enthalpy of Vaporization
429.00 kJ/mol   
15
Not Available   
Enthalpy of Fusion
15.48 kJ/mol   
19
Not Available   
Enthalpy of Atomization
468.60 kJ/mol   
15
Not Available   
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