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Molybdenum Uranium Comparison

Molybdenum
Uranium
Uranium Molybdenum comparison


Periodic Table
Symbol
Mo  
U  
Group Number
6  
12
0  
18
Period Number
5  
7  
Block
d block  
f block  
Element Family
Transition Metal  
Actinide  
CAS Number
7439987  
99+
7440611  
28
Space Group Name
Im_ 3m  
Cmcm  
Space Group Number
229.00  
2
63.00  
13
Facts
Interesting Facts
  • Molybdenum is highly reactive metal, hence not found free in nature .
  • Till 18th century Molybdenum element were often mistaken as a carbon or Lead.
  
  • 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
Carl Wilhelm Scheele  
-  
Discovery
In 1778  
In 1789  
Abundance
  
  
Abundance In Universe
0.00 %  
20
0.00 %  
30
Abundance In Sun
0.00 %  
19
0.00 %  
26
Abundance In Meteorites
0.00 %  
24
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
39
0.00 %  
36
Abundance In Oceans
0.00 %  
9
0.00 %  
11
Abundance In Humans
0.00 %  
17
0.00 %  
24
Uses
Uses & Benefits
  • Its alloys are used to make engine parts, drills, saw blade, etc.
  • Lubricant additive made up of Molybdenum disulfide is commonly used in the industry. It is also used as a catalyst.
  
  • 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
-  
-  
Other Uses
Alloys  
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Toxic  
Toxic  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
31
0.00 Blood/mg dm-3  
37
In Bone
0.70 p.p.m.  
20
1.20 p.p.m.  
19
Physical
Melting Point
2,617.00 °C  
5
1,132.00 °C  
39
Boiling Point
4,612.00 °C  
9
3,818.00 °C  
16
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gray  
Silvery Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
5.50  
7
6.00  
6
Brinell Hardness
1,370.00 MPa  
7
2,350.00 MPa  
2
Vickers Hardness
1,400.00 MPa  
11
1,960.00 MPa  
6
Speed of Sound
5,400.00 m/s  
9
3,155.00 m/s  
36
Optical Properties
  
  
Refractive Index
2.00  
15
1.38  
40
Reflectivity
58.00 %  
25
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Mo  
U  
Isotopes
  
  
Known Isotopes
25  
14
25  
14
Electronegativity
  
  
Pauling Electronegativity
2.16  
6
1.38  
29
Sanderson Electronegativity
1.15  
34
1.38  
22
Allred Rochow Electronegativity
1.30  
25
1.22  
27
Mulliken-Jaffe Electronegativity
2.16  
7
1.38  
29
Allen Electronegativity
2.16  
3
1.38  
36
Electropositivity
  
  
Pauling Electropositivity
1.84  
99+
2.62  
26
Ionization Energies
  
  
1st Energy Level
684.30 kJ/mol  
37
597.60 kJ/mol  
99+
2nd Energy Level
1,560.00 kJ/mol  
38
1,420.00 kJ/mol  
99+
3rd Energy Level
2,618.00 kJ/mol  
99+
1,900.00 kJ/mol  
99+
4th Energy Level
4,480.00 kJ/mol  
36
3,145.00 kJ/mol  
99+
5th Energy Level
5,257.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
6th Energy Level
6,640.80 kJ/mol  
99+
5,976.00 kJ/mol  
99+
7th Energy level
12,125.00 kJ/mol  
13
5,970.00 kJ/mol  
99+
8th Energy Level
13,860.00 kJ/mol  
16
5,976.00 kJ/mol  
99+
9th Energy Level
15,835.00 kJ/mol  
16
5,976.00 kJ/mol  
99+
10th Energy Level
17,980.00 kJ/mol  
18
5,976.00 kJ/mol  
99+
11th Energy Level
20,190.00 kJ/mol  
17
5,976.00 kJ/mol  
99+
12th Energy Level
22,219.00 kJ/mol  
38
5,970.00 kJ/mol  
99+
13th Energy Level
26,930.00 kJ/mol  
13
5,970.00 kJ/mol  
99+
14th Energy Level
29,196.00 kJ/mol  
13
5,970.00 kJ/mol  
34
15th Energy Level
52,490.00 kJ/mol  
99+
59,700.00 kJ/mol  
99+
16th Energy Level
55,000.00 kJ/mol  
99+
59,700.00 kJ/mol  
35
17th Energy Level
61,400.00 kJ/mol  
9
597.60 kJ/mol  
99+
18th Energy Level
67,700.00 kJ/mol  
9
5,976.00 kJ/mol  
99+
19th Energy Level
74,000.00 kJ/mol  
9
597.60 kJ/mol  
99+
20th Energy Level
80,400.00 kJ/mol  
10
597.00 kJ/mol  
99+
21st Energy Level
87,000.00 kJ/mol  
9
597.60 kJ/mol  
99+
22nd Energy Level
93,400.00 kJ/mol  
7
597.00 kJ/mol  
99+
23rd Energy Level
98,420.00 kJ/mol  
6
597.60 kJ/mol  
99+
24th Energy Level
104,400.00 kJ/mol  
2
597.60 kJ/mol  
99+
25th Energy Level
121,900.00 kJ/mol  
1
597.60 kJ/mol  
99+
26th Energy Level
127,700.00 kJ/mol  
1
597.60 kJ/mol  
99+
27th Energy Level
133,800.00 kJ/mol  
1
597.60 kJ/mol  
99+
28th Energy Level
139,800.00 kJ/mol  
1
597.60 kJ/mol  
99+
29th Energy Level
148,100.00 kJ/mol  
1
597.60 kJ/mol  
99+
30th Energy Level
154,500.00 kJ/mol  
1
597.60 kJ/mol  
99+
Electrochemical Equivalent
0.89 g/amp-hr  
99+
1.48 g/amp-hr  
99+
Electron Work Function
4.60 eV  
17
3.63 eV  
99+
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
42  
99+
92  
26
Electron Configuration
[Kr] 4d5 5s1  
[Rn] 5f3 6d1 7s2  
Crystal Structure
Body Centered Cubic (BCC)  
Orthorhombic (ORTH)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
ORTH-Crystal-Structure-of-Uranium.jpg#100  
Atom
  
  
Number of Protons
42  
99+
92  
26
Number of Neutrons
54  
99+
146  
14
Number of Electrons
42  
99+
92  
26
Radius of an Atom
  
  
Atomic Radius
139.00 pm  
99+
156.00 pm  
31
Covalent Radius
154.00 pm  
34
196.00 pm  
14
Van der Waals Radius
200.00 pm  
35
186.00 pm  
40
Atomic Weight
95.95 amu  
99+
238.03 amu  
21
Atomic Volume
9.40 cm3/mol  
99+
12.59 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Niobium
  
Protactinium
  
Next Element
Technetium
  
Neptunium
  
Valence Electron Potential
88.60 (-eV)  
13
170.00 (-eV)  
4
Lattice Constant
314.70 pm  
99+
295.08 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.03  
99+
1.02  
99+
Mechanical
Density
  
  
Density At Room Temperature
10.28 g/cm3  
39
19.10 g/cm3  
17
Density When Liquid (at m.p.)
9.33 g/cm3  
99+
17.30 g/cm3  
17
Tensile Strength
324.00 MPa  
15
100.00 MPa  
28
Viscosity
0.00  
5
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
27
0.01 (Pa)  
20
Elasticity properties
  
  
Shear Modulus
126.00 GPa  
8
111.00 GPa  
10
Bulk Modulus
230.00 GPa  
6
100.00 GPa  
16
Young's Modulus
329.00 GPa  
6
208.00 GPa  
11
Poisson Ratio
0.31  
13
0.23  
30
Other Mechanical Properties
Ductile, Weldable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
10.22  
40
18.80  
19
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
9
0.00 H/m  
16
Susceptibility
0.00  
29
0.00  
24
Electrical Properties
  
  
Electrical Property
Semiconductor  
Poor Conductor  
Resistivity
53.40 nΩ·m  
99+
0.28 nΩ·m  
99+
Electrical Conductivity
0.19 106/cm Ω  
11
0.04 106/cm Ω  
99+
Electron Affinity
71.90 kJ/mol  
16
50.60 kJ/mol  
25
Thermal
Specific Heat
0.25 J/(kg K)  
21
0.12 J/(kg K)  
99+
Molar Heat Capacity
24.06 J/mol·K  
99+
27.67 J/mol·K  
18
Thermal Conductivity
138.00 W/m·K  
12
27.50 W/m·K  
99+
Critical Temperature
2,896.00 K  
6
1,405.00 K  
99+
Thermal Expansion
4.80 µm/(m·K)  
99+
13.90 µm/(m·K)  
30
Enthalpy
  
  
Enthalpy of Vaporization
594.10 kJ/mol  
9
477.00 kJ/mol  
18
Enthalpy of Fusion
27.61 kJ/mol  
5
15.48 kJ/mol  
19
Enthalpy of Atomization
653.00 kJ/mol  
7
489.50 kJ/mol  
18
Standard Molar Entropy
28.70 J/mol.K  
99+
50.20 J/mol.K  
99+
Summary >>
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