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Indium vs Platinum

Indium
Platinum
Platinum vs Indium


Periodic Table
Symbol
In  
Pt  
Group Number
13  
5
10  
8
Period Number
5  
6  
Block
p block  
d block  
Element Family
Post-​Transition  
Transition Metal  
CAS Number
7440746  
17
7440064  
99+
Space Group Name
I4/mmm  
Fm_ 3m  
Space Group Number
139.00  
8
225.00  
2
Facts
Interesting Facts
  • Luster of Indium is bright in nature.
  • Reich and richer were looking for thallium in zinc metal and they discovered Indium metal.
  
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Mining, Ores of metals  
Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Ferdinand Reich and Hieronymous Theodor Richter  
Antonio de Ulloa  
Discovery
In 1863  
In 1735  
Abundance
  
  
Abundance In Universe
3 * 10-8 %  
28
5 * 10-7 %  
19
Abundance In Sun
~0.0000004 %  
23
~0.0000009 %  
19
Abundance In Meteorites
0.00 %  
99+
0.00 %  
25
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
99+
Not Available  
Uses
Uses & Benefits
  • It is used to produce indium tin oxide (ITO), it is used in manufacturing touch screens, flat screen TVs and solar panels.
  • Its nitride, phosphide and antimonide are used in transistors and microchips.
  
  • Platinum metal is mainly used in jewellery.
  • Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
  
Industrial Uses
Aerospace Industry, Automobile Industry  
Aerospace Industry, Chemical Industry  
Medical Uses
Medical Research  
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing  
Other Uses
Alloys, In Nuclear Reactors  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Non Toxic  
Non Toxic  
Present in Human Body
Yes  
No  
Physical Properties
Melting Point
156.61 °C  
99+
1,772.00 °C  
16
Boiling Point
2,000.00 °C  
99+
3,827.00 °C  
15
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
Silvery White  
Luster
Lustrous  
Metallic  
Hardness
  
  
Mohs Hardness
1.20  
20
3.50  
11
Brinell Hardness
8.80 MPa  
99+
300.00 MPa  
34
Vickers Hardness
Not Available  
400.00 MPa  
25
Speed of Sound
1,215.00 m/s  
99+
2,800.00 m/s  
29
Optical Properties
  
  
Reflectivity
Not Available  
73.00 %  
8
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
In  
Pt  
Isotopes
  
  
Known Isotopes
35  
4
35  
4
Electronegativity
  
  
Pauling Electronegativity
1.78  
16
2.28  
3
Sanderson Electronegativity
2.14  
8
Not Available  
Allred Rochow Electronegativity
1.49  
13
1.44  
17
Mulliken-Jaffe Electronegativity
1.76  
10
Not Available  
Allen Electronegativity
1.66  
18
1.72  
16
Electropositivity
  
  
Pauling Electropositivity
2.22  
38
1.72  
99+
Ionization Energies
  
  
1st Energy Level
558.30 kJ/mol  
99+
870.00 kJ/mol  
10
2nd Energy Level
1,820.70 kJ/mol  
18
1,791.00 kJ/mol  
21
3rd Energy Level
2,704.00 kJ/mol  
39
Not Available  
4th Energy Level
5,210.00 kJ/mol  
17
Not Available  
Electrochemical Equivalent
1.43 g/amp-hr  
99+
1.82 g/amp-hr  
35
Electron Work Function
4.12 eV  
24
5.65 eV  
1
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Chemical Stability, Anti Corrosion, Ionization  
Atomic Properties
Atomic Number
49  
99+
78  
38
Electron Configuration
[Kr] 4d10 5s2 5p1  
[Xe] 4f14 5d9 6s1  
Crystal Structure
Tetragonal (TETR)  
Face Centered Cubic (FCC)  
Crystal Lattice
TETR-Crystal-Structure-of-Indium.jpg#100  
FCC-Crystal-Structure-of-Platinum.jpg#100  
Atom
  
  
Number of Protons
49  
99+
78  
38
Number of Neutrons
66  
99+
117  
24
Number of Electrons
49  
99+
78  
38
Radius of an Atom
  
  
Atomic Radius
167.00 pm  
24
139.00 pm  
39
Covalent Radius
142.00 pm  
99+
136.00 pm  
99+
Van der Waals Radius
193.00 pm  
31
175.00 pm  
36
Atomic Weight
114.82 amu  
99+
47.87 amu  
99+
Atomic Volume
15.70 cm3/mol  
33
9.09 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Cadmium
  
Iridium
  
Next Element
Tin
  
Gold
  
Valence Electron Potential
54.00 (-eV)  
25
392.42 (-eV)  
1
Lattice Constant
325.23 pm  
99+
392.42 pm  
24
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
7.31 g/cm3  
99+
21.45 g/cm3  
11
Density When Liquid (at m.p.)
7.02 g/cm3  
33
19.77 g/cm3  
2
Tensile Strength
2.50 MPa  
21
125.00 MPa  
14
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.01 (Pa)  
11
Not Available  
Vapor Pressure at 2000 K
Not Available  
0.07 (Pa)  
18
Elasticity properties
  
  
Shear Modulus
Not Available  
61.00 GPa  
14
Bulk Modulus
Not Available  
230.00 GPa  
6
Young's Modulus
11.00 GPa  
99+
168.00 GPa  
14
Poisson Ratio
Not Available  
0.38  
6
Other Mechanical Properties
Ductile, Malleable  
Ductile, Malleable  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.31  
99+
21.45  
4
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
Not Available  
0.00 H/m  
3
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
83.70 nΩ·m  
34
105.00 nΩ·m  
30
Electrical Conductivity
0.12 106/cm Ω  
17
0.10 106/cm Ω  
21
Electron Affinity
28.90 kJ/mol  
31
205.30 kJ/mol  
2
Thermal Properties
Specific Heat
0.23 J/(kg K)  
27
0.13 J/(kg K)  
39
Molar Heat Capacity
26.74 J/mol·K  
25
25.86 J/mol·K  
35
Thermal Conductivity
81.80 W/m·K  
21
71.60 W/m·K  
24
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
32.10 µm/(m·K)  
9
8.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
226.40 kJ/mol  
40
510.50 kJ/mol  
11
Enthalpy of Fusion
3.28 kJ/mol  
99+
19.70 kJ/mol  
12
Enthalpy of Atomization
242.70 kJ/mol  
99+
565.00 kJ/mol  
11
Standard Molar Entropy
57.80 J/mol.K  
22
41.60 J/mol.K  
36
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