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Properties of Bohrium and Cobalt

Bohrium
Cobalt
Properties of Cobalt & Bohrium


Physical Properties
Melting Point
Not Available   
1,495.00 °C   
29
Boiling Point
Not Available   
2,870.00 °C   
34
Hardness
  
  
Mohs Hardness
Not Available   
5.00   
8
Brinell Hardness
Not Available   
470.00 MPa   
26
Vickers Hardness
Not Available   
1,043.00 MPa   
11
Optical Properties
  
  
Refractive Index
Not Available   
Not Available   
Reflectivity
Not Available   
67.00 %   
11
Speed of Sound
Not Available   
4,720.00 m/s   
14
Allotropes
No   
Yes   
α Allotropes
Not Available   
?
It forms above 417 °C simple cubic (metallic)Α-Cobalt   
β Allotropes
Not Available   
?
It forms below 417 °C hexagonal close packed (hcp) (metallic)Β-Cobalt   
γ Allotropes
Not Available   
Not Available   
Chemical Properties
Chemical Formula
Bh   
Co   
Isotopes
  
  
Known Isotopes
5   
32
26   
13
Electronegativity
  
  
Pauling Electronegativity
Not Available   
1.88   
12
Sanderson Electronegativity
Not Available   
2.56   
1
Allred Rochow Electronegativity
Not Available   
1.70   
5
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
Not Available   
1.84   
10
Electropositivity
  
  
Pauling Electropositivity
Not Available   
2.12   
99+
Ionization Energies
  
  
1st Energy Level
742.90 kJ/mol   
23
760.40 kJ/mol   
19
2nd Energy Level
1,688.50 kJ/mol   
30
1,648.00 kJ/mol   
31
3rd Energy Level
2,566.50 kJ/mol   
99+
3,232.00 kJ/mol   
22
Electrochemical Equivalent
Not Available   
1.10 g/amp-hr   
99+
Electron Work Function
Not Available   
5.00 eV   
5
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   
?
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
37.10 g/cm3   
3
4.51 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
4.11 g/cm3   
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
Not Available   
Vapor Pressure at 2000 K
Not Available   
0.98 (Pa)   
14
Tensile Strength
Not Available   
434.00 MPa   
9
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
44.00 GPa   
17
Bulk Modulus
Not Available   
110.00 GPa   
15
Young's Modulus
Not Available   
116.00 GPa   
18
Poisson Ratio
Not Available   
0.32   
12
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
Bh   
Co   
Group Number
7   
11
9   
9
Period Number
7   
4   
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
107   
11
22   
99+
Atomic Weight
270.00 amu   
8
47.87 amu   
99+
Atomic Volume
Not Available   
10.64 cm3/mol   
99+
Electron Configuration
[Rn] 5f14 6d5 7s2   
[Ar] 3d2 4s2   
Valence Electron Potential
Not Available   
95.20 (-eV)   
10
Atom
  
  
Number of Protons
107   
11
22   
99+
Number of Neutrons
155   
8
26   
99+
Number of Electrons
107   
11
22   
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)   
?
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   
HCP-Crystal-Structure-of-Cobalt.jpg#100   
Radius of an Atom
  
  
Atomic Radius
128.00 pm   
99+
147.00 pm   
34
Covalent Radius
141.00 pm   
99+
160.00 pm   
30
Van der Waals Radius
Not Available   
200.00 pm   
28
Lattice Constant
Not Available   
295.08 pm   
99+
Lattice Angles
NA   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
Not Available   
Adjacent Atomic Numbers
  
  
Next Element
Hassium
  
Nickel
  
Previous Element
Seaborgium
  
Iron
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
Not Available   
420.00 nΩ·m   
12
Electrical Conductivity
Not Available   
0.02 106/cm Ω   
99+
Electron Affinity
Not Available   
7.60 kJ/mol   
37
Electrical Property
Unknown   
?
Poor conductor metals have moderate resistance to electric currents. They can conduct electric current through them with very low efficiency.Poor Conductor   
Magnetic Characteristics
  
  
Specific Gravity
Not Available   
4,500.00   
1
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   
0.52 J/(kg K)   
9
Thermal Conductivity
Not Available   
21.90 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
Not Available   
25.06 J/mol·K   
99+
Thermal Expansion
Not Available   
8.60 µm/(m·K)   
99+
Standard Molar Entropy
Not Available   
27.30 J/mol.K   
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
429.00 kJ/mol   
15
Enthalpy of Fusion
Not Available   
15.48 kJ/mol   
19
Enthalpy of Atomization
Not Available   
468.60 kJ/mol   
15
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