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Chromium Cesium Comparison

Chromium
Cesium
Cesium Chromium comparison


Periodic Table
Symbol
Cr   
Cs   
Group Number
6   
12
1   
17
Period Number
4   
6   
Block
d block   
s block   
Element Family
Transition Metal   
Alkali   
CAS Number
7440473   
39
7440462   
40
Space Group Name
Im_ 3m   
Im_ 3m   
Space Group Number
229.00   
1
229.00   
1
Facts
Interesting Facts
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
  
Not Available   
Sources
Found in Minerals, Mining, Ores of metals, Ores of Minerals   
Earth's crust, Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Louis Nicolas Vauquelin   
Robert Bunsen and Gustav Kirchhoff   
Discovery
In Between 1797 - 1798   
In 1860   
Abundance
  
  
Abundance In Universe
1.5 * 10-3 %   
7
8 * 10-8 %   
24
Abundance In Sun
~0.002 %   
7
~0.0000008 %   
20
Abundance In Meteorites
0.30 %   
7
0.00 %   
38
Abundance In Earth's Crust
0.01 %   
13
0.00 %   
35
Abundance In Oceans
0.00 %   
16
0.00 %   
17
Abundance In Humans
0.00 %   
16
0.00 %   
17
Uses
Uses & Benefits
  • It is used to harden the steel and produces a stainless steel and other various alloys.
  • It is also used to give proper finish to polished mirrors. Its chromium plates are used in bathroom fittings.
  
  • 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
Automobile Industry, Chemical Industry   
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys   
Alloys   
Biological Properties
  
  
Toxicity
Highly Toxic   
Mildly Toxic   
Present in Human Body
Yes   
Yes   
In Blood
0.11 Blood/mg dm-3   
12
0.00 Blood/mg dm-3   
28
In Bone
0.33 p.p.m.   
21
0.05 p.p.m.   
26
Physical Properties
Melting Point
1,857.00 °C   
14
28.50 °C   
99+
Boiling Point
2,672.00 °C   
39
678.40 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery Gold   
Luster
Metallic   
NA   
Hardness
  
  
Mohs Hardness
8.50   
1
0.20   
25
Brinell Hardness
687.00 MPa   
16
0.14 MPa   
99+
Vickers Hardness
1,060.00 MPa   
10
Not Available   
Speed of Sound
5,940.00 m/s   
5
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
Cr   
Cs   
Isotopes
  
  
Known Isotopes
21   
18
36   
3
Electronegativity
  
  
Pauling Electronegativity
1.66   
18
0.79   
99+
Sanderson Electronegativity
1.66   
14
0.22   
33
Allred Rochow Electronegativity
1.56   
10
0.86   
99+
Mulliken-Jaffe Electronegativity
Not Available   
0.62   
26
Allen Electronegativity
1.65   
19
0.66   
99+
Electropositivity
  
  
Pauling Electropositivity
2.34   
36
3.21   
2
Ionization Energies
  
  
1st Energy Level
26,130.00 kJ/mol   
1
375.70 kJ/mol   
99+
2nd Energy Level
28,750.00 kJ/mol   
1
2,234.30 kJ/mol   
8
3rd Energy Level
34,230.00 kJ/mol   
1
3,400.00 kJ/mol   
16
4th Energy Level
37,066.00 kJ/mol   
1
Not Available   
5th Energy Level
97,510.00 kJ/mol   
1
Not Available   
6th Energy Level
105,800.00 kJ/mol   
1
Not Available   
7th Energy level
114,300.00 kJ/mol   
1
Not Available   
8th Energy Level
125,300.00 kJ/mol   
1
Not Available   
9th Energy Level
134,700.00 kJ/mol   
1
Not Available   
10th Energy Level
144,300.00 kJ/mol   
1
Not Available   
11th Energy Level
26,130.00 kJ/mol   
12
Not Available   
12th Energy Level
28,750.00 kJ/mol   
13
Not Available   
13th Energy Level
34,230.00 kJ/mol   
10
Not Available   
14th Energy Level
37,066.00 kJ/mol   
12
Not Available   
15th Energy Level
97,510.00 kJ/mol   
1
Not Available   
16th Energy Level
105,800.00 kJ/mol   
2
Not Available   
17th Energy Level
114,300.00 kJ/mol   
3
Not Available   
18th Energy Level
125,300.00 kJ/mol   
4
Not Available   
19th Energy Level
134,700.00 kJ/mol   
5
Not Available   
20th Energy Level
144,300.00 kJ/mol   
7
Not Available   
21st Energy Level
157,700.00 kJ/mol   
7
Not Available   
22nd Energy Level
166,090.00 kJ/mol   
6
Not Available   
Electrochemical Equivalent
0.32 g/amp-hr   
99+
4.96 g/amp-hr   
3
Electron Work Function
4.50 eV   
14
2.14 eV   
99+
Other Chemical Properties
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility   
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
24   
99+
55   
99+
Electron Configuration
[Ar] 3d5 4s1   
[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
24   
99+
55   
99+
Number of Neutrons
28   
99+
78   
99+
Number of Electrons
24   
99+
55   
99+
Radius of an Atom
  
  
Atomic Radius
128.00 pm   
99+
265.00 pm   
1
Covalent Radius
139.00 pm   
99+
244.00 pm   
2
Van der Waals Radius
200.00 pm   
28
343.00 pm   
2
Atomic Weight
52.00 amu   
99+
132.91 amu   
99+
Atomic Volume
7.23 cm3/mol   
99+
71.07 cm3/mol   
1
Adjacent Atomic Numbers
  
  
Previous Element
Vanadium
  
Tin
  
Next Element
Manganese
  
Barium
  
Valence Electron Potential
170.00 (-eV)   
4
8.62 (-eV)   
99+
Lattice Constant
291.00 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
7.19 g/cm3   
99+
1.93 g/cm3   
99+
Density When Liquid (at m.p.)
6.30 g/cm3   
40
1.84 g/cm3   
99+
Tensile Strength
689.00 MPa   
7
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
24
Not Available   
Vapor Pressure at 2000 K
774.00 (Pa)   
1
Not Available   
Elasticity properties
  
  
Shear Modulus
115.00 GPa   
9
Not Available   
Bulk Modulus
160.00 GPa   
11
1.60 GPa   
99+
Young's Modulus
279.00 GPa   
8
1.70 GPa   
99+
Poisson Ratio
0.21   
32
Not Available   
Other Mechanical Properties
NA   
Ductile   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.19   
99+
1.87   
99+
Magnetic Ordering
Antiferromagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
NA   
Semiconductor   
Resistivity
125.00 nΩ·m   
27
205.00 nΩ·m   
17
Electrical Conductivity
0.08 106/cm Ω   
25
0.05 106/cm Ω   
35
Electron Affinity
64.30 kJ/mol   
15
45.50 kJ/mol   
25
Thermal Properties
Specific Heat
0.45 J/(kg K)   
12
0.24 J/(kg K)   
23
Molar Heat Capacity
23.35 J/mol·K   
99+
32.21 J/mol·K   
4
Thermal Conductivity
93.90 W/m·K   
17
35.90 W/m·K   
36
Critical Temperature
Not Available   
1,938.00 K   
5
Thermal Expansion
4.90 µm/(m·K)   
99+
97.00 µm/(m·K)   
1
Enthalpy
  
  
Enthalpy of Vaporization
348.80 kJ/mol   
24
65.90 kJ/mol   
99+
Enthalpy of Fusion
15.31 kJ/mol   
20
2.10 kJ/mol   
99+
Enthalpy of Atomization
397.50 kJ/mol   
21
78.20 kJ/mol   
99+
Standard Molar Entropy
23.80 J/mol.K   
99+
85.20 J/mol.K   
3
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