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Properties of Plutonium and Cobalt

Plutonium
Cobalt
Properties of Cobalt & Plutonium


Physical Properties
Melting Point
639.50 °C   
99+
1,495.00 °C   
29
Boiling Point
3,235.00 °C   
24
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
2,260.00 m/s   
99+
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
Pu   
Co   
Isotopes
  
  
Known Isotopes
20   
19
26   
13
Electronegativity
  
  
Pauling Electronegativity
1.28   
33
1.88   
12
Sanderson Electronegativity
Not Available   
2.56   
1
Allred Rochow Electronegativity
1.22   
26
1.70   
5
Mulliken-Jaffe Electronegativity
Not Available   
Not Available   
Allen Electronegativity
Not Available   
1.84   
10
Electropositivity
  
  
Pauling Electropositivity
2.72   
21
2.12   
99+
Ionization Energies
  
  
1st Energy Level
584.70 kJ/mol   
99+
760.40 kJ/mol   
19
2nd Energy Level
1,128.00 kJ/mol   
99+
1,648.00 kJ/mol   
31
3rd Energy Level
2,084.00 kJ/mol   
99+
3,232.00 kJ/mol   
22
Electrochemical Equivalent
2.28 g/amp-hr   
22
1.10 g/amp-hr   
99+
Electron Work Function
Not Available   
5.00 eV   
5
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   
Mechanical Properties
Density
  
  
Density At Room Temperature
19.82 g/cm3   
13
4.51 g/cm3   
99+
Density When Liquid (at m.p.)
16.63 g/cm3   
8
4.11 g/cm3   
99+
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
26
Not Available   
Vapor Pressure at 2000 K
2.20 (Pa)   
12
0.98 (Pa)   
14
Tensile Strength
Not Available   
434.00 MPa   
9
Viscosity
Not Available   
Not Available   
Elasticity properties
  
  
Shear Modulus
43.00 GPa   
18
44.00 GPa   
17
Bulk Modulus
Not Available   
110.00 GPa   
15
Young's Modulus
96.00 GPa   
21
116.00 GPa   
18
Poisson Ratio
0.21   
32
0.32   
12
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, 
?
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   
?
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
Pu   
Co   
Group Number
0   
18
9   
9
Period Number
7   
4   
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   
?
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
?
Total 15 metals are included in actinide series, from Actinium to Lawrencium. Actinide series is located under f and d block of the periodic table.Actinide   
?
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
94   
24
22   
99+
Atomic Weight
244.00 amu   
19
47.87 amu   
99+
Atomic Volume
12.32 cm3/mol   
99+
10.64 cm3/mol   
99+
Electron Configuration
[Rn] 5f6 7s2   
[Ar] 3d2 4s2   
Valence Electron Potential
64.90 (-eV)   
21
95.20 (-eV)   
10
Atom
  
  
Number of Protons
94   
24
22   
99+
Number of Neutrons
150   
11
26   
99+
Number of Electrons
94   
24
22   
99+
Crystal Structure
?
The mono-clinic crystal structure is one of the seven lattice point groups. Here vectors of crystal have unequal lengths. Here vectors of crystal have unequal lengths and have two vectors perpendicular to the 3rd oneMonoclinic (MON)   
?
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
MON-Crystal-Structure-of-Plutonium.jpg#100   
HCP-Crystal-Structure-of-Cobalt.jpg#100   
Radius of an Atom
  
  
Atomic Radius
159.00 pm   
28
147.00 pm   
34
Covalent Radius
187.00 pm   
20
160.00 pm   
30
Van der Waals Radius
200.00 pm   
28
200.00 pm   
28
Lattice Constant
618.30 pm   
4
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
Americium
  
Nickel
  
Previous Element
Neptunium
  
Iron
  
Magnetic Properties
Electrical Properties
  
  
Resistivity
1.46 nΩ·m   
99+
420.00 nΩ·m   
12
Electrical Conductivity
0.01 106/cm Ω   
99+
0.02 106/cm Ω   
99+
Electron Affinity
Not Available   
7.60 kJ/mol   
37
Electrical Property
?
Poor conductor metals have moderate resistance to electric currents. They can conduct electric current through them with very low efficiency.Poor Conductor   
?
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
19.84   
7
4,500.00   
1
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
0.13 J/(kg K)   
39
0.52 J/(kg K)   
9
Thermal Conductivity
6.74 W/m·K   
99+
21.90 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Molar Heat Capacity
35.50 J/mol·K   
3
25.06 J/mol·K   
99+
Thermal Expansion
46.70 µm/(m·K)   
6
8.60 µm/(m·K)   
99+
Standard Molar Entropy
Not Available   
27.30 J/mol.K   
99+
Enthalpy
  
  
Enthalpy of Vaporization
344.00 kJ/mol   
25
429.00 kJ/mol   
15
Enthalpy of Fusion
2.82 kJ/mol   
99+
15.48 kJ/mol   
19
Enthalpy of Atomization
360.00 kJ/mol   
26
468.60 kJ/mol   
15
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