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Praseodymium vs Plutonium

Praseodymium
Plutonium
Plutonium vs Praseodymium


Periodic Table
Symbol
Pr   
Pu   
Group Number
Not Available   
0   
18
Period Number
6   
7   
Block
f block   
f block   
Element Family
Lanthanide   
Actinide   
CAS Number
7440100   
99+
7440075   
99+
Space Group Name
P63/mmc   
P121/m1   
Space Group Number
194.00   
5
11.00   
13
Facts
Interesting Facts
  • Praseodymium metal is synthetically produced metal.
  • Praseodymium is used as possible fuel for radioactive generators.
  
  • Plutonium metal if obtain from ores of uranium metal.
  • Plutonium metal is very sensitive to the change in atmospheric conditions like temperature and pressure.
  
Sources
Found in Minerals, Mining, Ores of Minerals   
Mining, Ores of metals   
History
  
  
Who Discovered
Not Available   
Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin McMillan   
Discovery
In 1885   
In Between 1940 1941   
Abundance
  
  
Abundance In Universe
2 * 10-7 %   
22
Not Available   
Abundance In Sun
~0.0000001 %   
26
~-9999 %   
Abundance In Meteorites
0.00 %   
40
Not Available   
Abundance In Earth's Crust
0.00 %   
27
Not Available   
Abundance In Oceans
0.00 %   
39
Not Available   
Uses
Uses & Benefits
  • The main use of Praseodymium include alloys. Praseodymium –Magnesium alloy is used in aircraft engines due to its high strength.
  • This metal is also used while making a permanent magnets.
  
  • Plutonium was used in atomic bombs and still it is being used in various weapons and Ammunition industry.
  • It is also used in nuclear power plant as source of energy for space missions.
  
Industrial Uses
Chemical Industry   
Aerospace Industry, Ammunition Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys   
Alloys   
Biological Properties
  
  
Toxicity
Moderately Toxic   
Toxic   
Present in Human Body
No   
No   
In Blood
Not Available   
0.00 Blood/mg dm-3   
37
In Bone
Not Available   
0.00 p.p.m.   
36
Physical Properties
Melting Point
935.00 °C   
99+
639.50 °C   
99+
Boiling Point
3,130.00 °C   
27
3,235.00 °C   
24
Appearance
  
  
Physical State
Solid   
Solid   
Color
Grayish White   
Silvery White   
Luster
Metallic   
NA   
Hardness
  
  
Brinell Hardness
481.00 MPa   
24
Not Available   
Vickers Hardness
400.00 MPa   
25
Not Available   
Speed of Sound
2,280.00 m/s   
40
2,260.00 m/s   
99+
Optical Properties
  
  
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
Pr   
Pu   
Isotopes
  
  
Known Isotopes
31   
8
20   
19
Electronegativity
  
  
Pauling Electronegativity
1.13   
99+
1.28   
33
Allred Rochow Electronegativity
1.07   
32
1.22   
26
Electropositivity
  
  
Pauling Electropositivity
2.87   
12
2.72   
21
Ionization Energies
  
  
1st Energy Level
527.00 kJ/mol   
99+
584.70 kJ/mol   
99+
2nd Energy Level
1,020.00 kJ/mol   
99+
1,128.00 kJ/mol   
99+
3rd Energy Level
2,086.00 kJ/mol   
99+
2,084.00 kJ/mol   
99+
4th Energy Level
3,761.00 kJ/mol   
99+
3,338.00 kJ/mol   
99+
5th Energy Level
5,551.00 kJ/mol   
29
Not Available   
Electrochemical Equivalent
1.75 g/amp-hr   
40
2.28 g/amp-hr   
22
Electron Work Function
2.70 eV   
99+
Not Available   
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes   
Corrosion, Ionization, Radioactive Isotopes, Radioactivity   
Atomic Properties
Atomic Number
59   
99+
94   
24
Electron Configuration
[Xe] 4f3 6s2   
[Rn] 5f6 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Monoclinic (MON)   
Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100   
MON-Crystal-Structure-of-Plutonium.jpg#100   
Atom
  
  
Number of Protons
59   
99+
94   
24
Number of Neutrons
82   
99+
150   
11
Number of Electrons
59   
99+
94   
24
Radius of an Atom
  
  
Atomic Radius
182.00 pm   
11
159.00 pm   
28
Covalent Radius
203.00 pm   
9
187.00 pm   
20
Van der Waals Radius
239.00 pm   
14
200.00 pm   
28
Atomic Weight
140.91 amu   
99+
244.00 amu   
19
Atomic Volume
20.80 cm3/mol   
15
12.32 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Cerium
  
Neptunium
  
Next Element
Neodymium
  
Americium
  
Valence Electron Potential
42.64 (-eV)   
99+
64.90 (-eV)   
21
Lattice Constant
367.25 pm   
29
618.30 pm   
4
Lattice Angles
π/2, π/2, 2 π/3   
NA   
Lattice C/A Ratio
1.61   
4
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
6.77 g/cm3   
99+
19.82 g/cm3   
13
Density When Liquid (at m.p.)
6.50 g/cm3   
39
16.63 g/cm3   
8
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
25
0.00 (Pa)   
26
Vapor Pressure at 2000 K
13.20 (Pa)   
7
2.20 (Pa)   
12
Elasticity properties
  
  
Shear Modulus
14.80 GPa   
39
43.00 GPa   
18
Bulk Modulus
28.80 GPa   
40
Not Available   
Young's Modulus
37.30 GPa   
99+
96.00 GPa   
21
Poisson Ratio
0.28   
16
0.21   
32
Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
6.77   
99+
19.84   
7
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Poor Conductor   
Resistivity
0.70 nΩ·m   
99+
1.46 nΩ·m   
99+
Electrical Conductivity
0.01 106/cm Ω   
99+
0.01 106/cm Ω   
99+
Electron Affinity
50.00 kJ/mol   
21
Not Available   
Thermal Properties
Specific Heat
0.19 J/(kg K)   
32
0.13 J/(kg K)   
39
Molar Heat Capacity
27.20 J/mol·K   
18
35.50 J/mol·K   
3
Thermal Conductivity
12.50 W/m·K   
99+
6.74 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
6.70 µm/(m·K)   
99+
46.70 µm/(m·K)   
6
Enthalpy
  
  
Enthalpy of Vaporization
296.80 kJ/mol   
29
344.00 kJ/mol   
25
Enthalpy of Fusion
6.89 kJ/mol   
99+
2.82 kJ/mol   
99+
Enthalpy of Atomization
368.00 kJ/mol   
24
360.00 kJ/mol   
26
Standard Molar Entropy
73.20 J/mol.K   
10
Not Available   
Periodic Table >>
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