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Cesium vs Bismuth

Cesium
Bismuth
Bismuth vs Cesium


Periodic Table
Symbol
Cs  
Bi  
Group Number
1  
17
15  
3
Period Number
6  
6  
Block
s block  
p block  
Element Family
Alkali  
Post-​Transition  
CAS Number
7440462  
40
7440699  
22
Space Group Name
Im_ 3m  
C12/m1  
Space Group Number
229.00  
2
12.00  
15
Facts
Interesting Facts
Cesium is the most alkaline metal and is used in atomic clocks.  
  • Bismuth metal is soluble and reacts with concentrated nitric acid.
  • It oxides are used as a yellow pigment in paint. Bismuth chloride oxide BiClO gives a pearly texture to cosmetics.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Robert Bunsen and Gustav Kirchhoff  
Claude François Geoffroy  
Discovery
In 1860  
In 1753  
Abundance
  
  
Abundance In Universe
0.00 %  
25
0.00 %  
26
Abundance In Sun
0.00 %  
20
0.00 %  
14
Abundance In Meteorites
0.00 %  
38
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
35
0.00 %  
99+
Abundance In Oceans
0.00 %  
17
0.00 %  
24
Abundance In Humans
0.00 %  
20
0.00 %  
24
Uses
Uses & Benefits
  • 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.
  
  • Tin and bismuth alloys have a very low melting point and hence it is used in fire detector and the fire extinguishers. It also used in electric solders and fuses.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
Pharmaceutical Industry  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Mildly Toxic  
Low Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
28
0.02 Blood/mg dm-3  
20
In Bone
0.05 p.p.m.  
31
0.20 p.p.m.  
27
Physical
Melting Point
28.50 °C  
99+
271.30 °C  
99+
Boiling Point
678.40 °C  
99+
1,560.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gold  
Silver  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
0.20  
27
2.25  
16
Brinell Hardness
0.14 MPa  
99+
70.00 MPa  
99+
Vickers Hardness
0.14 MPa  
99+
30.00 MPa  
99+
Speed of Sound
1,630.00 m/s  
99+
1,790.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.93  
17
2.50  
5
Reflectivity
35.00 %  
34
70.00 %  
13
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Cs  
Bi  
Isotopes
  
  
Known Isotopes
36  
3
33  
6
Electronegativity
  
  
Pauling Electronegativity
0.79  
99+
2.02  
7
Sanderson Electronegativity
0.22  
99+
2.34  
3
Allred Rochow Electronegativity
0.86  
99+
1.67  
7
Mulliken-Jaffe Electronegativity
0.62  
99+
2.15  
8
Allen Electronegativity
0.66  
99+
2.01  
5
Electropositivity
  
  
Pauling Electropositivity
3.21  
2
1.98  
99+
Ionization Energies
  
  
1st Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
35
2nd Energy Level
2,234.30 kJ/mol  
8
1,610.00 kJ/mol  
34
3rd Energy Level
3,400.00 kJ/mol  
16
2,466.00 kJ/mol  
99+
4th Energy Level
375.70 kJ/mol  
99+
4,370.00 kJ/mol  
38
5th Energy Level
3,750.00 kJ/mol  
99+
5,400.00 kJ/mol  
99+
6th Energy Level
3,750.00 kJ/mol  
99+
8,520.00 kJ/mol  
29
7th Energy level
3,750.00 kJ/mol  
99+
7,030.00 kJ/mol  
99+
8th Energy Level
3,760.00 kJ/mol  
99+
7,030.00 kJ/mol  
37
9th Energy Level
3,750.00 kJ/mol  
99+
7,030.00 kJ/mol  
34
10th Energy Level
3,757.00 kJ/mol  
99+
7,030.00 kJ/mol  
38
11th Energy Level
3,757.00 kJ/mol  
99+
7,030.00 kJ/mol  
36
12th Energy Level
3,750.00 kJ/mol  
99+
7,030.00 kJ/mol  
99+
13th Energy Level
3,750.00 kJ/mol  
99+
7,030.00 kJ/mol  
32
14th Energy Level
3,750.00 kJ/mol  
99+
7,030.00 kJ/mol  
22
15th Energy Level
37,500.00 kJ/mol  
99+
70,300.00 kJ/mol  
28
16th Energy Level
375.70 kJ/mol  
99+
70,300.00 kJ/mol  
23
17th Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
99+
18th Energy Level
3,757.00 kJ/mol  
99+
7,030.00 kJ/mol  
34
19th Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
40
20th Energy Level
375.00 kJ/mol  
99+
703.00 kJ/mol  
34
21st Energy Level
375.70 kJ/mol  
99+
7,030.00 kJ/mol  
12
22nd Energy Level
375.00 kJ/mol  
99+
703.00 kJ/mol  
28
23rd Energy Level
375.70 kJ/mol  
99+
7,030.00 kJ/mol  
10
24th Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
27
25th Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
29
26th Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
28
27th Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
29
28th Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
34
29th Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
35
30th Energy Level
375.70 kJ/mol  
99+
703.00 kJ/mol  
29
Electrochemical Equivalent
4.96 g/amp-hr  
3
2.60 g/amp-hr  
23
Electron Work Function
2.14 eV  
99+
4.22 eV  
29
Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
55  
99+
83  
33
Electron Configuration
[Xe] 6s1  
[Xe] 4f14 5d10 6s2 6p3  
Crystal Structure
Body Centered Cubic (BCC)  
Rhombohedral (RHO)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
RHO-Crystal-Structure-of-Bismuth.jpg#100  
Atom
  
  
Number of Protons
55  
99+
83  
33
Number of Neutrons
78  
99+
126  
19
Number of Electrons
55  
99+
83  
33
Radius of an Atom
  
  
Atomic Radius
265.00 pm  
2
156.00 pm  
31
Covalent Radius
244.00 pm  
2
148.00 pm  
38
Van der Waals Radius
343.00 pm  
2
207.00 pm  
33
Atomic Weight
132.91 amu  
99+
208.98 amu  
29
Atomic Volume
71.07 cm3/mol  
1
21.30 cm3/mol  
23
Adjacent Atomic Numbers
  
  
Previous Element
Tin
  
Lead
  
Next Element
Barium
  
Polonium
  
Valence Electron Potential
8.62 (-eV)  
99+
41.90 (-eV)  
99+
Lattice Constant
614.10 pm  
5
667.40 pm  
2
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.87  
3
1.86  
4
Mechanical
Density
  
  
Density At Room Temperature
1.93 g/cm3  
99+
9.78 g/cm3  
99+
Density When Liquid (at m.p.)
1.84 g/cm3  
99+
10.05 g/cm3  
99+
Tensile Strength
15.00 MPa  
99+
32.00 MPa  
99+
Viscosity
0.00  
25
0.00  
29
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
30
0.00 (Pa)  
24
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
12.00 GPa  
99+
Bulk Modulus
1.60 GPa  
99+
31.00 GPa  
99+
Young's Modulus
1.70 GPa  
99+
32.00 GPa  
99+
Poisson Ratio
0.35  
9
0.33  
11
Other Mechanical Properties
Ductile  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
1.87  
99+
9.79  
99+
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
20
Susceptibility
0.00  
24
0.00  
36
Electrical Properties
  
  
Electrical Property
Semiconductor  
Semiconductor  
Resistivity
205.00 nΩ·m  
17
1.29 nΩ·m  
99+
Electrical Conductivity
0.05 106/cm Ω  
40
0.01 106/cm Ω  
99+
Electron Affinity
45.50 kJ/mol  
30
91.20 kJ/mol  
13
Thermal
Specific Heat
0.24 J/(kg K)  
23
0.12 J/(kg K)  
99+
Molar Heat Capacity
32.21 J/mol·K  
6
25.52 J/mol·K  
99+
Thermal Conductivity
35.90 W/m·K  
37
7.97 W/m·K  
99+
Critical Temperature
1,938.00 K  
22
544.00 K  
99+
Thermal Expansion
97.00 µm/(m·K)  
1
13.40 µm/(m·K)  
34
Enthalpy
  
  
Enthalpy of Vaporization
65.90 kJ/mol  
99+
151.00 kJ/mol  
99+
Enthalpy of Fusion
2.10 kJ/mol  
99+
10.90 kJ/mol  
39
Enthalpy of Atomization
78.20 kJ/mol  
99+
207.10 kJ/mol  
99+
Standard Molar Entropy
85.20 J/mol.K  
3
56.70 J/mol.K  
32
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