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Praseodymium vs Uranium

Praseodymium
Uranium
Uranium vs Praseodymium


Periodic Table
Symbol
Pr  
U  
Group Number
3  
15
0  
18
Period Number
6  
7  
Block
f block  
f block  
Element Family
Lanthanide  
Actinide  
CAS Number
7440100  
99+
7440611  
28
Space Group Name
P63/mmc  
Cmcm  
Space Group Number
194.00  
7
63.00  
13
Facts
Interesting Facts
  • Praseodymium metal is synthetically produced metal.
  • Praseodymium is used as possible fuel for radioactive generators.
  
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Earth's crust, Mining, Ores of Minerals  
History
  
  
Who Discovered
-  
-  
Discovery
In 1885  
In 1789  
Abundance
  
  
Abundance In Universe
0.00 %  
23
0.00 %  
30
Abundance In Sun
0.00 %  
26
0.00 %  
26
Abundance In Meteorites
0.00 %  
40
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
27
0.00 %  
36
Abundance In Oceans
0.00 %  
39
0.00 %  
11
Abundance In Humans
0.00 %  
24
0.00 %  
24
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.
  
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  
Industrial Uses
Chemical Industry  
Ammunition Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Moderately Toxic  
Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
33
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
1.20 p.p.m.  
19
Physical
Melting Point
935.00 °C  
99+
1,132.00 °C  
39
Boiling Point
3,130.00 °C  
28
3,818.00 °C  
16
Appearance
  
  
Physical State
Solid  
Solid  
Color
Grayish White  
Silvery Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
4.00  
11
6.00  
6
Brinell Hardness
481.00 MPa  
29
2,350.00 MPa  
2
Vickers Hardness
400.00 MPa  
99+
1,960.00 MPa  
6
Speed of Sound
2,280.00 m/s  
99+
3,155.00 m/s  
36
Optical Properties
  
  
Refractive Index
1.64  
30
1.38  
40
Reflectivity
60.00 %  
23
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Pr  
U  
Isotopes
  
  
Known Isotopes
31  
8
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.13  
99+
1.38  
29
Sanderson Electronegativity
1.13  
36
1.38  
22
Allred Rochow Electronegativity
1.07  
33
1.22  
27
Mulliken-Jaffe Electronegativity
1.13  
99+
1.38  
29
Allen Electronegativity
1.13  
99+
1.38  
36
Electropositivity
  
  
Pauling Electropositivity
2.87  
12
2.62  
26
Ionization Energies
  
  
1st Energy Level
527.00 kJ/mol  
99+
597.60 kJ/mol  
99+
2nd Energy Level
1,020.00 kJ/mol  
99+
1,420.00 kJ/mol  
99+
3rd Energy Level
2,086.00 kJ/mol  
99+
1,900.00 kJ/mol  
99+
4th Energy Level
3,761.00 kJ/mol  
99+
3,145.00 kJ/mol  
99+
5th Energy Level
5,551.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
6th Energy Level
5,270.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
7th Energy level
5,270.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
8th Energy Level
5,270.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
9th Energy Level
5,270.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
10th Energy Level
5,270.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
11th Energy Level
5,274.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
12th Energy Level
5,270.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
13th Energy Level
5,270.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
14th Energy Level
5,270.00 kJ/mol  
99+
5,970.00 kJ/mol  
34
15th Energy Level
52,700.00 kJ/mol  
99+
59,700.00 kJ/mol  
99+
16th Energy Level
52,700.00 kJ/mol  
99+
59,700.00 kJ/mol  
35
17th Energy Level
527.30 kJ/mol  
99+
597.60 kJ/mol  
99+
18th Energy Level
5,270.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
19th Energy Level
527.30 kJ/mol  
99+
597.60 kJ/mol  
99+
20th Energy Level
527.00 kJ/mol  
99+
597.00 kJ/mol  
99+
21st Energy Level
527.00 kJ/mol  
99+
597.60 kJ/mol  
99+
22nd Energy Level
527.00 kJ/mol  
99+
597.00 kJ/mol  
99+
23rd Energy Level
527.00 kJ/mol  
99+
597.60 kJ/mol  
99+
24th Energy Level
527.40 kJ/mol  
99+
597.60 kJ/mol  
99+
25th Energy Level
527.00 kJ/mol  
99+
597.60 kJ/mol  
99+
26th Energy Level
527.40 kJ/mol  
99+
597.60 kJ/mol  
99+
27th Energy Level
527.40 kJ/mol  
99+
597.60 kJ/mol  
99+
28th Energy Level
527.40 kJ/mol  
99+
597.60 kJ/mol  
99+
29th Energy Level
527.00 kJ/mol  
99+
597.60 kJ/mol  
99+
30th Energy Level
527.00 kJ/mol  
99+
597.60 kJ/mol  
99+
Electrochemical Equivalent
1.75 g/amp-hr  
99+
1.48 g/amp-hr  
99+
Electron Work Function
2.70 eV  
99+
3.63 eV  
99+
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
59  
99+
92  
26
Electron Configuration
[Xe] 4f3 6s2  
[Rn] 5f3 6d1 7s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Orthorhombic (ORTH)  
Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100  
ORTH-Crystal-Structure-of-Uranium.jpg#100  
Atom
  
  
Number of Protons
59  
99+
92  
26
Number of Neutrons
82  
99+
146  
14
Number of Electrons
59  
99+
92  
26
Radius of an Atom
  
  
Atomic Radius
182.00 pm  
13
156.00 pm  
31
Covalent Radius
203.00 pm  
9
196.00 pm  
14
Van der Waals Radius
239.00 pm  
18
186.00 pm  
40
Atomic Weight
140.91 amu  
99+
238.03 amu  
21
Atomic Volume
20.80 cm3/mol  
25
12.59 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Cerium
  
Protactinium
  
Next Element
Neodymium
  
Neptunium
  
Valence Electron Potential
42.64 (-eV)  
99+
170.00 (-eV)  
4
Lattice Constant
367.25 pm  
32
295.08 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.61  
18
1.02  
99+
Mechanical
Density
  
  
Density At Room Temperature
6.77 g/cm3  
99+
19.10 g/cm3  
17
Density When Liquid (at m.p.)
6.50 g/cm3  
99+
17.30 g/cm3  
17
Tensile Strength
55.00 MPa  
37
100.00 MPa  
28
Viscosity
0.00  
25
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
27
0.00 (Pa)  
37
Vapor Pressure at 2000 K
13.20 (Pa)  
7
0.01 (Pa)  
20
Elasticity properties
  
  
Shear Modulus
14.80 GPa  
99+
111.00 GPa  
10
Bulk Modulus
28.80 GPa  
99+
100.00 GPa  
16
Young's Modulus
37.30 GPa  
99+
208.00 GPa  
11
Poisson Ratio
0.28  
16
0.23  
30
Other Mechanical Properties
Ductile, Malleable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
6.77  
99+
18.80  
19
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
16
Susceptibility
0.00  
19
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Poor Conductor  
Resistivity
0.70 nΩ·m  
99+
0.28 nΩ·m  
99+
Electrical Conductivity
0.01 106/cm Ω  
99+
0.04 106/cm Ω  
99+
Electron Affinity
50.00 kJ/mol  
26
50.60 kJ/mol  
25
Thermal
Specific Heat
0.19 J/(kg K)  
33
0.12 J/(kg K)  
99+
Molar Heat Capacity
27.20 J/mol·K  
24
27.67 J/mol·K  
18
Thermal Conductivity
12.50 W/m·K  
99+
27.50 W/m·K  
99+
Critical Temperature
1,208.00 K  
99+
1,405.00 K  
99+
Thermal Expansion
6.70 µm/(m·K)  
99+
13.90 µm/(m·K)  
30
Enthalpy
  
  
Enthalpy of Vaporization
296.80 kJ/mol  
99+
477.00 kJ/mol  
18
Enthalpy of Fusion
6.89 kJ/mol  
99+
15.48 kJ/mol  
19
Enthalpy of Atomization
368.00 kJ/mol  
33
489.50 kJ/mol  
18
Standard Molar Entropy
73.20 J/mol.K  
10
50.20 J/mol.K  
99+
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