Uranium vs Cesium
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
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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