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Tungsten vs Cesium


Cesium vs Tungsten


Periodic Table

Symbol
W   
Cs   

Group Number
6   
12
1   
17

Period Number
6   
6   

Block
d block   
s block   

Element Family
Transition Metal   
Alkali   

CAS Number
7440337   
99+
7440462   
40

Space Group Name
Im_ 3m   
Im_ 3m   

Space Group Number
229.00   
1
229.00   
1

Facts

Interesting Facts
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
  
Not Available   

Sources
Earth's crust, Found in Minerals, 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 1781   
In 1860   

Abundance
  
  

Abundance In Universe
5 * 10-8 %   
27
8 * 10-8 %   
24

Abundance In Sun
~0.0000004 %   
23
~0.0000008 %   
20

Abundance In Meteorites
0.00 %   
39
0.00 %   
38

Abundance In Earth's Crust
0.00 %   
39
0.00 %   
35

Abundance In Oceans
0.00 %   
18
0.00 %   
17

Abundance In Humans
Not Available   
0.00 %   
17

Uses

Uses & Benefits
  • Tungsten and its alloys are used in high-temperature applications like welding electrodes, high-temperature furnace, etc.
  • Tungsten carbide is very hard and used in metal working, mining and petroleum industry.
  
  • 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
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry   
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys   

Biological Properties
  
  

Toxicity
Non Toxic   
Mildly Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.00 Blood/mg dm-3   
31
0.00 Blood/mg dm-3   
28

In Bone
0.00 p.p.m.   
35
0.05 p.p.m.   
26

Physical Properties

Melting Point
3,410.00 °C   
1
28.50 °C   
99+

Boiling Point
5,660.00 °C   
1
678.40 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Grayish White   
Silvery Gold   

Luster
Lustrous   
NA   

Hardness
  
  

Mohs Hardness
7.50   
2
0.20   
25

Brinell Hardness
2,000.00 MPa   
4
0.14 MPa   
99+

Vickers Hardness
3,430.00 MPa   
1
Not Available   

Speed of Sound
4,620.00 m/s   
16
Not Available   

Optical Properties
  
  

Reflectivity
62.00 %   
13
Not Available   

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
W   
Cs   

Isotopes
  
  

Known Isotopes
33   
6
36   
3

Electronegativity
  
  

Pauling Electronegativity
2.36   
2
0.79   
99+

Sanderson Electronegativity
0.98   
23
0.22   
33

Allred Rochow Electronegativity
1.40   
19
0.86   
99+

Mulliken-Jaffe Electronegativity
Not Available   
0.62   
26

Allen Electronegativity
1.47   
29
0.66   
99+

Electropositivity
  
  

Pauling Electropositivity
1.64   
99+
3.21   
2

Ionization Energies
  
  

1st Energy Level
770.00 kJ/mol   
16
375.70 kJ/mol   
99+

2nd Energy Level
1,700.00 kJ/mol   
29
2,234.30 kJ/mol   
8

3rd Energy Level
Not Available   
3,400.00 kJ/mol   
16

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

Electron Work Function
4.55 eV   
13
2.14 eV   
99+

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

Atomic Properties

Atomic Number
74   
99+
55   
99+

Electron Configuration
[Xe] 4f14 5d4 6s2   
[Xe] 6s1   

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

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
74   
99+
55   
99+

Number of Neutrons
110   
27
78   
99+

Number of Electrons
74   
99+
55   
99+

Radius of an Atom
  
  

Atomic Radius
139.00 pm   
39
265.00 pm   
1

Covalent Radius
162.00 pm   
29
244.00 pm   
2

Van der Waals Radius
200.00 pm   
28
343.00 pm   
2

Atomic Weight
183.84 amu   
37
132.91 amu   
99+

Atomic Volume
9.53 cm3/mol   
99+
71.07 cm3/mol   
1

Adjacent Atomic Numbers
  
  

Previous Element
Tantalum
  
Tin
  

Next Element
Rhenium
  
Barium
  

Valence Electron Potential
140.00 (-eV)   
5
8.62 (-eV)   
99+

Lattice Constant
316.52 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
19.25 g/cm3   
16
1.93 g/cm3   
99+

Density When Liquid (at m.p.)
17.60 g/cm3   
5
1.84 g/cm3   
99+

Tensile Strength
370.00 MPa   
10
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
0.00 (Pa)   
32
Not Available   

Elasticity properties
  
  

Shear Modulus
161.00 GPa   
5
Not Available   

Bulk Modulus
310.00 GPa   
4
1.60 GPa   
99+

Young's Modulus
411.00 GPa   
4
1.70 GPa   
99+

Poisson Ratio
0.28   
17
Not Available   

Other Mechanical Properties
Ductile, Malleable   
Ductile   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
19.22   
9
1.87   
99+

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Superconductor   
Semiconductor   

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

Electrical Conductivity
0.19 106/cm Ω   
10
0.05 106/cm Ω   
35

Electron Affinity
78.60 kJ/mol   
13
45.50 kJ/mol   
25

Thermal Properties

Specific Heat
0.13 J/(kg K)   
39
0.24 J/(kg K)   
23

Molar Heat Capacity
24.27 J/mol·K   
99+
32.21 J/mol·K   
4

Thermal Conductivity
173.00 W/m·K   
7
35.90 W/m·K   
36

Critical Temperature
Not Available   
1,938.00 K   
5

Thermal Expansion
4.50 µm/(m·K)   
99+
97.00 µm/(m·K)   
1

Enthalpy
  
  

Enthalpy of Vaporization
799.10 kJ/mol   
1
65.90 kJ/mol   
99+

Enthalpy of Fusion
35.23 kJ/mol   
1
2.10 kJ/mol   
99+

Enthalpy of Atomization
837.00 kJ/mol   
1
78.20 kJ/mol   
99+

Standard Molar Entropy
32.60 J/mol.K   
99+
85.20 J/mol.K   
3

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