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Platinum vs Cesium

Platinum
Cesium
Cesium vs Platinum


Periodic Table
Symbol
Pt  
Cs  
Group Number
10  
8
1  
17
Period Number
6  
6  
Block
d block  
s block  
Element Family
Transition Metal  
Alkali  
CAS Number
7440064  
99+
7440462  
40
Space Group Name
Fm_ 3m  
Im_ 3m  
Space Group Number
225.00  
2
229.00  
1
Facts
Interesting Facts
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Not Available  
Sources
Mining, Ores of metals, Ores of Minerals  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Antonio de Ulloa  
Robert Bunsen and Gustav Kirchhoff  
Discovery
In 1735  
In 1860  
Abundance
  
  
Abundance In Universe
5 * 10-7 %  
19
8 * 10-8 %  
24
Abundance In Sun
~0.0000009 %  
19
~0.0000008 %  
20
Abundance In Meteorites
0.00 %  
25
0.00 %  
38
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
35
Abundance In Oceans
Not Available  
0.00 %  
17
Abundance In Humans
Not Available  
0.00 %  
17
Uses
Uses & Benefits
  • Platinum metal is mainly used in jewellery.
  • Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
  
  • 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, Chemical Industry  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing  
NA  
Other Uses
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Alloys  
Biological Properties
  
  
Toxicity
Non 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
1,772.00 °C  
16
28.50 °C  
99+
Boiling Point
3,827.00 °C  
15
678.40 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery Gold  
Luster
Metallic  
NA  
Hardness
  
  
Mohs Hardness
3.50  
11
0.20  
25
Brinell Hardness
300.00 MPa  
34
0.14 MPa  
99+
Vickers Hardness
400.00 MPa  
25
Not Available  
Speed of Sound
2,800.00 m/s  
29
Not Available  
Optical Properties
  
  
Reflectivity
73.00 %  
8
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
Pt  
Cs  
Isotopes
  
  
Known Isotopes
35  
4
36  
3
Electronegativity
  
  
Pauling Electronegativity
2.28  
3
0.79  
99+
Sanderson Electronegativity
Not Available  
0.22  
33
Allred Rochow Electronegativity
1.44  
17
0.86  
99+
Mulliken-Jaffe Electronegativity
Not Available  
0.62  
26
Allen Electronegativity
1.72  
16
0.66  
99+
Electropositivity
  
  
Pauling Electropositivity
1.72  
99+
3.21  
2
Ionization Energies
  
  
1st Energy Level
870.00 kJ/mol  
10
375.70 kJ/mol  
99+
2nd Energy Level
1,791.00 kJ/mol  
21
2,234.30 kJ/mol  
8
3rd Energy Level
Not Available  
3,400.00 kJ/mol  
16
Electrochemical Equivalent
1.82 g/amp-hr  
35
4.96 g/amp-hr  
3
Electron Work Function
5.65 eV  
1
2.14 eV  
99+
Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization  
Chemical Stability, Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic Properties
Atomic Number
78  
38
55  
99+
Electron Configuration
[Xe] 4f14 5d9 6s1  
[Xe] 6s1  
Crystal Structure
Face Centered Cubic (FCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Platinum.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
78  
38
55  
99+
Number of Neutrons
117  
24
78  
99+
Number of Electrons
78  
38
55  
99+
Radius of an Atom
  
  
Atomic Radius
139.00 pm  
39
265.00 pm  
1
Covalent Radius
136.00 pm  
99+
244.00 pm  
2
Van der Waals Radius
175.00 pm  
36
343.00 pm  
2
Atomic Weight
47.87 amu  
99+
132.91 amu  
99+
Atomic Volume
9.09 cm3/mol  
99+
71.07 cm3/mol  
1
Adjacent Atomic Numbers
  
  
Previous Element
Iridium
  
Tin
  
Next Element
Gold
  
Barium
  
Valence Electron Potential
392.42 (-eV)  
1
8.62 (-eV)  
99+
Lattice Constant
392.42 pm  
24
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
21.45 g/cm3  
11
1.93 g/cm3  
99+
Density When Liquid (at m.p.)
19.77 g/cm3  
2
1.84 g/cm3  
99+
Tensile Strength
125.00 MPa  
14
Not Available  
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
0.07 (Pa)  
18
Not Available  
Elasticity properties
  
  
Shear Modulus
61.00 GPa  
14
Not Available  
Bulk Modulus
230.00 GPa  
6
1.60 GPa  
99+
Young's Modulus
168.00 GPa  
14
1.70 GPa  
99+
Poisson Ratio
0.38  
6
Not Available  
Other Mechanical Properties
Ductile, Malleable  
Ductile  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
21.45  
4
1.87  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
3
Not Available  
Electrical Properties
  
  
Electrical Property
Conductor  
Semiconductor  
Resistivity
105.00 nΩ·m  
30
205.00 nΩ·m  
17
Electrical Conductivity
0.10 106/cm Ω  
21
0.05 106/cm Ω  
35
Electron Affinity
205.30 kJ/mol  
2
45.50 kJ/mol  
25
Thermal Properties
Specific Heat
0.13 J/(kg K)  
39
0.24 J/(kg K)  
23
Molar Heat Capacity
25.86 J/mol·K  
35
32.21 J/mol·K  
4
Thermal Conductivity
71.60 W/m·K  
24
35.90 W/m·K  
36
Critical Temperature
Not Available  
1,938.00 K  
5
Thermal Expansion
8.80 µm/(m·K)  
99+
97.00 µm/(m·K)  
1
Enthalpy
  
  
Enthalpy of Vaporization
510.50 kJ/mol  
11
65.90 kJ/mol  
99+
Enthalpy of Fusion
19.70 kJ/mol  
12
2.10 kJ/mol  
99+
Enthalpy of Atomization
565.00 kJ/mol  
11
78.20 kJ/mol  
99+
Standard Molar Entropy
41.60 J/mol.K  
36
85.20 J/mol.K  
3
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