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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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