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Lead Uranium Comparison


Uranium Lead comparison


Periodic Table

Symbol
Pb   
U   

Group Number
14   
4
0   
18

Period Number
6   
7   

Block
p block   
f block   

Element Family
Post-​Transition   
Actinide   

CAS Number
7439921   
99+
7440611   
28

Space Group Name
Fm_ 3m   
Cmcm   

Space Group Number
225.00   
2
63.00   
10

Facts

Interesting Facts
  • Galena mineral contains almost 87% of Lead metal in it, Galena is sulfide mineral.
  • The best available source of Lead metal today is by recycling automobile batteries.
  
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  

Sources
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals   
Earth's crust, Mining, Ores of Minerals   

History
  
  

Who Discovered
Unknown   
Not Available   

Discovery
In Middle Easterns (7000 BCE)   
In 1789   

Abundance
  
  

Abundance In Universe
1 * 10-6 %   
16
2 * 10-8 %   
29

Abundance In Sun
~0.000001 %   
18
~0.0000001 %   
26

Abundance In Meteorites
0.00 %   
23
0.00 %   
99+

Abundance In Earth's Crust
0.00 %   
26
0.00 %   
36

Abundance In Oceans
0.00 %   
22
0.00 %   
11

Abundance In Humans
0.00 %   
8
Not Available   

Uses

Uses & Benefits
  • It is also used in insecticides, hair dyes and as an anti-knocking additive for petrol. But all these are banned by the government as Lead metal is known for detrimental to health.
  
  • 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, Electrical Industry, Electronic Industry   
Ammunition Industry, Chemical Industry   

Medical Uses
Surgical Instruments Manufacturing   
NA   

Other Uses
Alloys   
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues   

Biological Properties
  
  

Toxicity
Toxic   
Toxic   

Present in Human Body
Yes   
No   

In Blood
0.21 Blood/mg dm-3   
11
Not Available   

In Bone
30.00 p.p.m.   
10
Not Available   

Physical Properties

Melting Point
327.50 °C   
99+
1,132.00 °C   
39

Boiling Point
1,740.00 °C   
99+
3,818.00 °C   
16

Appearance
  
  

Physical State
Solid   
Solid   

Color
Gray   
Silvery Gray   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
1.50   
18
6.00   
6

Brinell Hardness
38.00 MPa   
99+
2,350.00 MPa   
2

Vickers Hardness
Not Available   
1,960.00 MPa   
2

Speed of Sound
1,190.00 m/s   
99+
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
Pb   
U   

Isotopes
  
  

Known Isotopes
35   
4
25   
14

Electronegativity
  
  

Pauling Electronegativity
1.87   
13
1.38   
28

Sanderson Electronegativity
2.29   
4
Not Available   

Allred Rochow Electronegativity
1.55   
11
1.22   
26

Mulliken-Jaffe Electronegativity
2.41   
2
Not Available   

Allen Electronegativity
1.85   
8
Not Available   

Electropositivity
  
  

Pauling Electropositivity
1.67   
99+
2.62   
26

Ionization Energies
  
  

1st Energy Level
715.60 kJ/mol   
31
597.60 kJ/mol   
99+

2nd Energy Level
1,450.50 kJ/mol   
99+
1,420.00 kJ/mol   
99+

3rd Energy Level
3,081.50 kJ/mol   
23
1,900.00 kJ/mol   
99+

4th Energy Level
4,083.00 kJ/mol   
35
3,145.00 kJ/mol   
99+

5th Energy Level
6,640.00 kJ/mol   
20
Not Available   

Electrochemical Equivalent
3.87 g/amp-hr   
9
1.48 g/amp-hr   
99+

Electron Work Function
4.25 eV   
21
3.63 eV   
30

Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes   
Ionization, Radioactive Isotopes, Radioactivity   

Atomic Properties

Atomic Number
82   
34
92   
26

Electron Configuration
[Xe] 4f14 5d10 6s2 6p2   
[Rn] 5f3 6d1 7s2   

Crystal Structure
Face Centered Cubic (FCC)   
Orthorhombic (ORTH)   

Crystal Lattice
FCC-Crystal-Structure-of-Lead.jpg#100   
ORTH-Crystal-Structure-of-Uranium.jpg#100   

Atom
  
  

Number of Protons
82   
34
92   
26

Number of Neutrons
125   
19
146   
13

Number of Electrons
82   
34
92   
26

Radius of an Atom
  
  

Atomic Radius
175.00 pm   
19
156.00 pm   
29

Covalent Radius
146.00 pm   
38
196.00 pm   
14

Van der Waals Radius
202.00 pm   
27
186.00 pm   
33

Atomic Weight
207.20 amu   
30
238.03 amu   
21

Atomic Volume
18.17 cm3/mol   
27
12.59 cm3/mol   
40

Adjacent Atomic Numbers
  
  

Previous Element
Thallium
  

Next Element
Bismuth
  
Neptunium
  

Valence Electron Potential
24.20 (-eV)   
99+
170.00 (-eV)   
4

Lattice Constant
495.08 pm   
16
295.08 pm   
99+

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
11.34 g/cm3   
33
19.10 g/cm3   
17

Density When Liquid (at m.p.)
10.66 g/cm3   
15
17.30 g/cm3   
7

Tensile Strength
12.00 MPa   
20
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
1.64 (Pa)   
7
Not Available   

Vapor Pressure at 2000 K
Not Available   
0.01 (Pa)   
20

Elasticity properties
  
  

Shear Modulus
5.60 GPa   
99+
111.00 GPa   
10

Bulk Modulus
46.00 GPa   
24
100.00 GPa   
16

Young's Modulus
16.00 GPa   
99+
208.00 GPa   
10

Poisson Ratio
0.44   
3
0.23   
30

Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
11.35   
25
18.80   
10

Magnetic Ordering
Diamagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Poor Conductor   
Poor Conductor   

Resistivity
208.00 nΩ·m   
16
0.28 nΩ·m   
99+

Electrical Conductivity
0.05 106/cm Ω   
36
0.04 106/cm Ω   
37

Electron Affinity
35.10 kJ/mol   
28
Not Available   

Thermal Properties

Specific Heat
0.13 J/(kg K)   
39
0.12 J/(kg K)   
40

Molar Heat Capacity
26.65 J/mol·K   
26
27.67 J/mol·K   
15

Thermal Conductivity
35.30 W/m·K   
38
27.50 W/m·K   
40

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
28.90 µm/(m·K)   
13
13.90 µm/(m·K)   
27

Enthalpy
  
  

Enthalpy of Vaporization
179.40 kJ/mol   
99+
477.00 kJ/mol   
13

Enthalpy of Fusion
4.77 kJ/mol   
99+
15.48 kJ/mol   
19

Enthalpy of Atomization
194.60 kJ/mol   
99+
489.50 kJ/mol   
14

Standard Molar Entropy
64.80 J/mol.K   
17
50.20 J/mol.K   
31

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