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Cesium vs Gold

Cesium
Gold
Gold vs Cesium


Periodic Table
Symbol
Cs   
Au   
Group Number
1   
17
11   
7
Period Number
6   
6   
Block
s block   
d block   
Element Family
Alkali   
Transition Metal   
CAS Number
7440462   
40
7440575   
31
Space Group Name
Im_ 3m   
Fm_ 3m   
Space Group Number
229.00   
1
225.00   
2
Facts
Interesting Facts
Not Available   
  • It is found in copper ores and from the crust of the earth.
  • It is the most malleable and ductile metal.
  • Gold alloys are used in Dentistry as fillings, crowning, clips, etc. It is also used as an artificial limb joints.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals   
Earth's crust, Mining, Ores of metals   
History
  
  
Who Discovered
Robert Bunsen and Gustav Kirchhoff   
Unknown   
Discovery
In 1860   
Before 6000 BCE   
Abundance
  
  
Abundance In Universe
8 * 10-8 %   
24
6 * 10-8 %   
26
Abundance In Sun
~0.0000008 %   
20
~0.0000001 %   
26
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 %   
21
Abundance In Humans
0.00 %   
17
0.00 %   
18
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.
  
  • Gold metal is mainly used for Jewelry, bullion, coinage, etc.
  • It is used in the art, decoration, ornaments, etc. It is also used for electroplating process.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry   
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
Dentistry, Pharmaceutical Industry   
Other Uses
Alloys   
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   
Biological Properties
  
  
Toxicity
Mildly Toxic   
Non Toxic   
Present in Human Body
Yes   
Yes   
In Blood
0.00 Blood/mg dm-3   
28
0.00 Blood/mg dm-3   
35
In Bone
0.05 p.p.m.   
26
0.02 p.p.m.   
30
Physical Properties
Melting Point
28.50 °C   
99+
1,064.43 °C   
99+
Boiling Point
678.40 °C   
99+
2,807.00 °C   
36
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gold   
Gold   
Luster
NA   
Metallic   
Hardness
  
  
Mohs Hardness
0.20   
25
2.50   
14
Brinell Hardness
0.14 MPa   
99+
194.00 MPa   
99+
Vickers Hardness
Not Available   
216.00 MPa   
31
Speed of Sound
Not Available   
2,030.00 m/s   
99+
Optical Properties
  
  
Reflectivity
Not Available   
95.00 %   
2
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
Cs   
Au   
Isotopes
  
  
Known Isotopes
36   
3
36   
3
Electronegativity
  
  
Pauling Electronegativity
0.79   
99+
2.54   
1
Sanderson Electronegativity
0.22   
33
Not Available   
Allred Rochow Electronegativity
0.86   
99+
1.42   
18
Mulliken-Jaffe Electronegativity
0.62   
26
1.87   
7
Allen Electronegativity
0.66   
99+
1.92   
5
Electropositivity
  
  
Pauling Electropositivity
3.21   
2
1.46   
99+
Ionization Energies
  
  
1st Energy Level
375.70 kJ/mol   
99+
890.10 kJ/mol   
8
2nd Energy Level
2,234.30 kJ/mol   
8
1,980.00 kJ/mol   
12
3rd Energy Level
3,400.00 kJ/mol   
16
Not Available   
Electrochemical Equivalent
4.96 g/amp-hr   
3
2.45 g/amp-hr   
21
Electron Work Function
2.14 eV   
99+
5.10 eV   
4
Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility   
Chemical Stability, Ionization, Solubility   
Atomic Properties
Atomic Number
55   
99+
79   
37
Electron Configuration
[Xe] 6s1   
[Xe] 4f14 5d10 6s1   
Crystal Structure
Body Centered Cubic (BCC)   
Face Centered Cubic (FCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Gold.jpg#100   
Atom
  
  
Number of Protons
55   
99+
79   
37
Number of Neutrons
78   
99+
118   
23
Number of Electrons
55   
99+
79   
37
Radius of an Atom
  
  
Atomic Radius
265.00 pm   
1
151.00 pm   
32
Covalent Radius
244.00 pm   
2
144.00 pm   
40
Van der Waals Radius
343.00 pm   
2
166.00 pm   
39
Atomic Weight
132.91 amu   
99+
196.97 amu   
33
Atomic Volume
71.07 cm3/mol   
1
10.20 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Tin
  
Platinum
  
Next Element
Barium
  
Mercury
  
Valence Electron Potential
8.62 (-eV)   
99+
43.40 (-eV)   
99+
Lattice Constant
614.10 pm   
5
407.82 pm   
21
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
1.61   
4
Mechanical Properties
Density
  
  
Density At Room Temperature
1.93 g/cm3   
99+
19.30 g/cm3   
15
Density When Liquid (at m.p.)
1.84 g/cm3   
99+
17.31 g/cm3   
6
Tensile Strength
Not Available   
120.00 MPa   
15
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
23
Vapor Pressure at 2000 K
Not Available   
67.00 (Pa)   
4
Elasticity properties
  
  
Shear Modulus
Not Available   
27.00 GPa   
27
Bulk Modulus
1.60 GPa   
99+
180.00 GPa   
9
Young's Modulus
1.70 GPa   
99+
79.00 GPa   
24
Poisson Ratio
Not Available   
0.40   
4
Other Mechanical Properties
Ductile   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
1.87   
99+
19.32   
8
Magnetic Ordering
Paramagnetic   
Diamagnetic   
Electrical Properties
  
  
Electrical Property
Semiconductor   
Conductor   
Resistivity
205.00 nΩ·m   
17
2.20 nΩ·m   
99+
Electrical Conductivity
0.05 106/cm Ω   
35
0.45 106/cm Ω   
3
Electron Affinity
45.50 kJ/mol   
25
222.80 kJ/mol   
1
Thermal Properties
Specific Heat
0.24 J/(kg K)   
23
0.13 J/(kg K)   
39
Molar Heat Capacity
32.21 J/mol·K   
4
25.42 J/mol·K   
40
Thermal Conductivity
35.90 W/m·K   
36
318.00 W/m·K   
3
Critical Temperature
1,938.00 K   
5
Not Available   
Thermal Expansion
97.00 µm/(m·K)   
1
14.20 µm/(m·K)   
26
Enthalpy
  
  
Enthalpy of Vaporization
65.90 kJ/mol   
99+
324.40 kJ/mol   
27
Enthalpy of Fusion
2.10 kJ/mol   
99+
12.55 kJ/mol   
27
Enthalpy of Atomization
78.20 kJ/mol   
99+
364.00 kJ/mol   
25
Standard Molar Entropy
85.20 J/mol.K   
3
47.40 J/mol.K   
32
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