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Uranium Cesium Comparison


Cesium Uranium comparison


Periodic Table

Symbol
U   
Cs   

Group Number
0   
18
1   
17

Period Number
7   
6   

Block
f block   
s block   

Element Family
Actinide   
Alkali   

CAS Number
7440611   
28
7440462   
40

Space Group Name
Cmcm   
Im_ 3m   

Space Group Number
63.00   
10
229.00   
1

Facts

Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
Not Available   

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

History
  
  

Who Discovered
Not Available   
Robert Bunsen and Gustav Kirchhoff   

Discovery
In 1789   
In 1860   

Abundance
  
  

Abundance In Universe
2 * 10-8 %   
29
8 * 10-8 %   
24

Abundance In Sun
~0.0000001 %   
26
~0.0000008 %   
20

Abundance In Meteorites
0.00 %   
99+
0.00 %   
38

Abundance In Earth's Crust
0.00 %   
36
0.00 %   
35

Abundance In Oceans
0.00 %   
11
0.00 %   
17

Abundance In Humans
Not Available   
0.00 %   
17

Uses

Uses & Benefits
  • 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.
  
  • The most common use of cesium metal is as a drilling fluid. It is also used in optical glass manufacturing.
  • In vacuum tubes and radiation monitor equipment this metal is used as a catalyst promoter.
  

Industrial Uses
Ammunition Industry, Chemical Industry   
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry   

Medical Uses
NA   
NA   

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

Biological Properties
  
  

Toxicity
Toxic   
Mildly Toxic   

Present in Human Body
No   
Yes   

In Blood
Not Available   
0.00 Blood/mg dm-3   
28

In Bone
Not Available   
0.05 p.p.m.   
26

Physical Properties

Melting Point
1,132.00 °C   
39
28.50 °C   
99+

Boiling Point
3,818.00 °C   
16
678.40 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery Gray   
Silvery Gold   

Luster
Metallic   
NA   

Hardness
  
  

Mohs Hardness
6.00   
6
0.20   
25

Brinell Hardness
2,350.00 MPa   
2
0.14 MPa   
99+

Vickers Hardness
1,960.00 MPa   
2
Not Available   

Speed of Sound
3,155.00 m/s   
25
Not Available   

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
U   
Cs   

Isotopes
  
  

Known Isotopes
25   
14
36   
3

Electronegativity
  
  

Pauling Electronegativity
1.38   
28
0.79   
99+

Sanderson Electronegativity
Not Available   
0.22   
33

Allred Rochow Electronegativity
1.22   
26
0.86   
99+

Mulliken-Jaffe Electronegativity
Not Available   
0.62   
26

Allen Electronegativity
Not Available   
0.66   
99+

Electropositivity
  
  

Pauling Electropositivity
2.62   
26
3.21   
2

Ionization Energies
  
  

1st Energy Level
597.60 kJ/mol   
99+
375.70 kJ/mol   
99+

2nd Energy Level
1,420.00 kJ/mol   
99+
2,234.30 kJ/mol   
8

3rd Energy Level
1,900.00 kJ/mol   
99+
3,400.00 kJ/mol   
16

4th Energy Level
3,145.00 kJ/mol   
99+
Not Available   

Electrochemical Equivalent
1.48 g/amp-hr   
99+
4.96 g/amp-hr   
3

Electron Work Function
3.63 eV   
30
2.14 eV   
99+

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility   

Atomic Properties

Atomic Number
92   
26
55   
99+

Electron Configuration
[Rn] 5f3 6d1 7s2   
[Xe] 6s1   

Crystal Structure
Orthorhombic (ORTH)   
Body Centered Cubic (BCC)   

Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
92   
26
55   
99+

Number of Neutrons
146   
13
78   
99+

Number of Electrons
92   
26
55   
99+

Radius of an Atom
  
  

Atomic Radius
156.00 pm   
29
265.00 pm   
1

Covalent Radius
196.00 pm   
14
244.00 pm   
2

Van der Waals Radius
186.00 pm   
33
343.00 pm   
2

Atomic Weight
238.03 amu   
21
132.91 amu   
99+

Atomic Volume
12.59 cm3/mol   
40
71.07 cm3/mol   
1

Adjacent Atomic Numbers
  
  

Previous Element
Tin
  

Next Element
Neptunium
  
Barium
  

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

Lattice Constant
295.08 pm   
99+
614.10 pm   
5

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
19.10 g/cm3   
17
1.93 g/cm3   
99+

Density When Liquid (at m.p.)
17.30 g/cm3   
7
1.84 g/cm3   
99+

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

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

Elasticity properties
  
  

Shear Modulus
111.00 GPa   
10
Not Available   

Bulk Modulus
100.00 GPa   
16
1.60 GPa   
99+

Young's Modulus
208.00 GPa   
10
1.70 GPa   
99+

Poisson Ratio
0.23   
30
Not Available   

Other Mechanical Properties
Ductile, Malleable   
Ductile   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
18.80   
10
1.87   
99+

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Poor Conductor   
Semiconductor   

Resistivity
0.28 nΩ·m   
99+
205.00 nΩ·m   
17

Electrical Conductivity
0.04 106/cm Ω   
37
0.05 106/cm Ω   
35

Electron Affinity
Not Available   
45.50 kJ/mol   
25

Thermal Properties

Specific Heat
0.12 J/(kg K)   
40
0.24 J/(kg K)   
23

Molar Heat Capacity
27.67 J/mol·K   
15
32.21 J/mol·K   
4

Thermal Conductivity
27.50 W/m·K   
40
35.90 W/m·K   
36

Critical Temperature
Not Available   
1,938.00 K   
5

Thermal Expansion
13.90 µm/(m·K)   
27
97.00 µm/(m·K)   
1

Enthalpy
  
  

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

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

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

Standard Molar Entropy
50.20 J/mol.K   
31
85.20 J/mol.K   
3

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