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Neodymium vs Uranium

Neodymium
Uranium
Uranium vs Neodymium


Periodic Table
Symbol
Nd  
U  
Group Number
1  
17
0  
18
Period Number
6  
7  
Block
f block  
f block  
Element Family
Lanthanide  
Actinide  
CAS Number
7440008  
99+
7440611  
28
Space Group Name
P63/mmc  
Cmcm  
Space Group Number
194.00  
5
63.00  
10
Facts
Interesting Facts
  • Neodymium is not found free in nature, hence it is not a native metal.
  • Neodymium metal found in minerals like Monazite and Bastnaesite.
  
  • 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  
Earth's crust, Mining, Ores of Minerals  
History
  
  
Who Discovered
Carl Auer von Welsbach  
Not Available  
Discovery
In 1885  
In 1789  
Abundance
  
  
Abundance In Universe
1 * 10-6 %  
16
2 * 10-8 %  
29
Abundance In Sun
~0.0000003 %  
24
~0.0000001 %  
26
Abundance In Meteorites
0.00 %  
30
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
20
0.00 %  
36
Abundance In Oceans
0.00 %  
30
0.00 %  
11
Uses
Uses & Benefits
  • Neodymium-Iron-boron alloy is used to make permanent magnets.
  • It is used in microphones, Mp3 player, loudspeakers, mobile phones, etc.
  
  • 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
Aerospace Industry, Electrical Industry, Electronic Industry  
Ammunition Industry, Chemical Industry  
Medical Uses
NA  
NA  
Other Uses
Alloys  
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Non Toxic  
Toxic  
Present in Human Body
No  
No  
Physical Properties
Melting Point
1,010.00 °C  
99+
1,132.00 °C  
39
Boiling Point
3,127.00 °C  
28
3,818.00 °C  
16
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
Not Available  
6.00  
6
Brinell Hardness
265.00 MPa  
35
2,350.00 MPa  
2
Vickers Hardness
345.00 MPa  
27
1,960.00 MPa  
2
Speed of Sound
2,330.00 m/s  
38
3,155.00 m/s  
25
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
Nd  
U  
Isotopes
  
  
Known Isotopes
30  
9
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.14  
99+
1.38  
28
Allred Rochow Electronegativity
1.07  
32
1.22  
26
Electropositivity
  
  
Pauling Electropositivity
2.86  
13
2.62  
26
Ionization Energies
  
  
1st Energy Level
533.10 kJ/mol  
99+
597.60 kJ/mol  
99+
2nd Energy Level
1,040.00 kJ/mol  
99+
1,420.00 kJ/mol  
99+
3rd Energy Level
2,130.00 kJ/mol  
99+
1,900.00 kJ/mol  
99+
4th Energy Level
3,900.00 kJ/mol  
99+
3,145.00 kJ/mol  
99+
Electrochemical Equivalent
1.79 g/amp-hr  
37
1.48 g/amp-hr  
99+
Electron Work Function
3.20 eV  
34
3.63 eV  
30
Other Chemical Properties
Chemical Stability, Corrosion, Flammable, Ionization  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic Properties
Atomic Number
60  
99+
92  
26
Electron Configuration
[Xe] 4f4 6s2  
[Rn] 5f3 6d1 7s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Orthorhombic (ORTH)  
Crystal Lattice
DHCP-Crystal-Structure-of-Neodymium.jpg#100  
ORTH-Crystal-Structure-of-Uranium.jpg#100  
Atom
  
  
Number of Protons
60  
99+
92  
26
Number of Neutrons
84  
40
146  
13
Number of Electrons
60  
99+
92  
26
Radius of an Atom
  
  
Atomic Radius
181.00 pm  
13
156.00 pm  
29
Covalent Radius
201.00 pm  
10
196.00 pm  
14
Van der Waals Radius
229.00 pm  
20
186.00 pm  
33
Atomic Weight
144.24 amu  
99+
238.03 amu  
21
Atomic Volume
20.60 cm3/mol  
18
12.59 cm3/mol  
40
Adjacent Atomic Numbers
  
  
Previous Element
Praseodymium
  
Protactinium
  
Next Element
Promethium
  
Neptunium
  
Valence Electron Potential
43.40 (-eV)  
99+
170.00 (-eV)  
4
Lattice Constant
365.80 pm  
30
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  
4
Not Available  
Mechanical Properties
Density
  
  
Density At Room Temperature
7.01 g/cm3  
99+
19.10 g/cm3  
17
Density When Liquid (at m.p.)
6.89 g/cm3  
36
17.30 g/cm3  
7
Tensile Strength
Not Available  
Not Available  
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
21
Not Available  
Vapor Pressure at 2000 K
101.00 (Pa)  
2
0.01 (Pa)  
20
Elasticity properties
  
  
Shear Modulus
16.30 GPa  
38
111.00 GPa  
10
Bulk Modulus
31.80 GPa  
37
100.00 GPa  
16
Young's Modulus
41.40 GPa  
40
208.00 GPa  
10
Poisson Ratio
0.28  
16
0.23  
30
Other Mechanical Properties
NA  
Ductile, Malleable  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.00  
99+
18.80  
10
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Electrical Properties
  
  
Electrical Property
NA  
Poor Conductor  
Resistivity
643.00 nΩ·m  
6
0.28 nΩ·m  
99+
Electrical Conductivity
0.02 106/cm Ω  
99+
0.04 106/cm Ω  
37
Electron Affinity
50.00 kJ/mol  
21
Not Available  
Thermal Properties
Specific Heat
0.19 J/(kg K)  
32
0.12 J/(kg K)  
40
Molar Heat Capacity
27.45 J/mol·K  
17
27.67 J/mol·K  
15
Thermal Conductivity
16.50 W/m·K  
99+
27.50 W/m·K  
40
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
9.60 µm/(m·K)  
99+
13.90 µm/(m·K)  
27
Enthalpy
  
  
Enthalpy of Vaporization
273.00 kJ/mol  
34
477.00 kJ/mol  
13
Enthalpy of Fusion
7.14 kJ/mol  
99+
15.48 kJ/mol  
19
Enthalpy of Atomization
322.00 kJ/mol  
32
489.50 kJ/mol  
14
Standard Molar Entropy
71.50 J/mol.K  
13
50.20 J/mol.K  
31
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