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Indium vs Cadmium

Indium
Cadmium
Cadmium vs Indium


Periodic Table
Symbol
In   
Cd   
Group Number
13   
5
12   
6
Period Number
5   
5   
Block
p block   
d block   
Element Family
Post-​Transition   
Transition Metal   
CAS Number
7440746   
17
7440439   
99+
Space Group Name
I4/mmm   
P63/mmc   
Space Group Number
139.00   
8
194.00   
5
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.
  
  • Naturally occurring minor elements include Cadmium.
  • Cadmium is released into atmosphere to control volcanic eruption and forest fires.
  • It is used for electroplating of Steel for corrosion resistance.
  • It can absorb neutrons and used in nuclear reactor to control atomic fission.
  
Sources
Mining, Ores of metals   
Found As a By-product, Found in Minerals, Mining   
History
  
  
Who Discovered
Ferdinand Reich and Hieronymous Theodor Richter   
Karl Samuel Leberecht Hermann and Friedrich Stromeyer   
Discovery
In 1863   
In 1817   
Abundance
  
  
Abundance In Universe
3 * 10-8 %   
28
2 * 10-7 %   
22
Abundance In Sun
~0.0000004 %   
23
~0.0000006 %   
21
Abundance In Meteorites
0.00 %   
99+
0.00 %   
31
Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
99+
Abundance In Oceans
0.00 %   
99+
0.00 %   
28
Abundance In Humans
Not Available   
0.00 %   
11
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.
  
  • It has very limited uses as it is a toxic metal and it can cause birth defects, cancer, etc.
  • Almost 80% of Cadmium metal is used in Nickel cadmium Batteries and now it is getting replaced with nickel hydride.
  
Industrial Uses
Aerospace Industry, Automobile Industry   
Aerospace Industry, Ammunition Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Medical Uses
Medical Research   
NA   
Other Uses
Alloys, In Nuclear Reactors   
Alloys   
Biological Properties
  
  
Toxicity
Non Toxic   
Toxic   
Present in Human Body
Yes   
Yes   
In Blood
Not Available   
0.01 Blood/mg dm-3   
24
In Bone
Not Available   
1.80 p.p.m.   
15
Physical Properties
Melting Point
156.61 °C   
99+
320.90 °C   
99+
Boiling Point
2,000.00 °C   
99+
765.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray   
Silvery Bluish-Gray   
Luster
Lustrous   
Metallic   
Hardness
  
  
Mohs Hardness
1.20   
20
2.00   
16
Brinell Hardness
8.80 MPa   
99+
203.00 MPa   
39
Speed of Sound
1,215.00 m/s   
99+
2,310.00 m/s   
39
Optical Properties
  
  
Reflectivity
Not Available   
67.00 %   
11
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   
Cd   
Isotopes
  
  
Known Isotopes
35   
4
34   
5
Electronegativity
  
  
Pauling Electronegativity
1.78   
16
1.69   
17
Sanderson Electronegativity
2.14   
8
1.98   
9
Allred Rochow Electronegativity
1.49   
13
1.46   
15
Mulliken-Jaffe Electronegativity
1.76   
10
1.53   
13
Allen Electronegativity
1.66   
18
1.52   
27
Electropositivity
  
  
Pauling Electropositivity
2.22   
38
2.31   
37
Ionization Energies
  
  
1st Energy Level
558.30 kJ/mol   
99+
867.80 kJ/mol   
11
2nd Energy Level
1,820.70 kJ/mol   
18
1,631.40 kJ/mol   
32
3rd Energy Level
2,704.00 kJ/mol   
39
3,616.00 kJ/mol   
13
4th Energy Level
5,210.00 kJ/mol   
17
Not Available   
Electrochemical Equivalent
1.43 g/amp-hr   
99+
2.10 g/amp-hr   
27
Electron Work Function
4.12 eV   
24
4.22 eV   
22
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
49   
99+
48   
99+
Electron Configuration
[Kr] 4d10 5s2 5p1   
[Kr] 4d10 5s2   
Crystal Structure
Tetragonal (TETR)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
TETR-Crystal-Structure-of-Indium.jpg#100   
HCP-Crystal-Structure-of-Cadmium.jpg#100   
Atom
  
  
Number of Protons
49   
99+
48   
99+
Number of Neutrons
66   
99+
64   
99+
Number of Electrons
49   
99+
48   
99+
Radius of an Atom
  
  
Atomic Radius
167.00 pm   
24
151.00 pm   
32
Covalent Radius
142.00 pm   
99+
144.00 pm   
40
Van der Waals Radius
193.00 pm   
31
158.00 pm   
99+
Atomic Weight
114.82 amu   
99+
112.41 amu   
99+
Atomic Volume
15.70 cm3/mol   
33
13.10 cm3/mol   
39
Adjacent Atomic Numbers
  
  
Previous Element
Cadmium
  
Silver
  
Next Element
Tin
  
Indium
  
Valence Electron Potential
54.00 (-eV)   
25
30.00 (-eV)   
99+
Lattice Constant
325.23 pm   
99+
297.94 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.89   
1
Mechanical Properties
Density
  
  
Density At Room Temperature
7.31 g/cm3   
99+
8.65 g/cm3   
99+
Density When Liquid (at m.p.)
7.02 g/cm3   
33
8.00 g/cm3   
28
Tensile Strength
2.50 MPa   
21
62.00 MPa   
16
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.01 (Pa)   
11
Not Available   
Elasticity properties
  
  
Shear Modulus
Not Available   
19.00 GPa   
35
Bulk Modulus
Not Available   
42.00 GPa   
29
Young's Modulus
11.00 GPa   
99+
50.00 GPa   
36
Poisson Ratio
Not Available   
0.30   
14
Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.31   
99+
8.65   
36
Magnetic Ordering
Diamagnetic   
Diamagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Semiconductor   
Resistivity
83.70 nΩ·m   
34
72.70 nΩ·m   
36
Electrical Conductivity
0.12 106/cm Ω   
17
0.14 106/cm Ω   
15
Electron Affinity
28.90 kJ/mol   
31
0.00 kJ/mol   
40
Thermal Properties
Specific Heat
0.23 J/(kg K)   
27
0.23 J/(kg K)   
26
Molar Heat Capacity
26.74 J/mol·K   
25
26.02 J/mol·K   
32
Thermal Conductivity
81.80 W/m·K   
21
96.60 W/m·K   
16
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
32.10 µm/(m·K)   
9
30.80 µm/(m·K)   
10
Enthalpy
  
  
Enthalpy of Vaporization
226.40 kJ/mol   
40
100.00 kJ/mol   
99+
Enthalpy of Fusion
3.28 kJ/mol   
99+
6.19 kJ/mol   
99+
Enthalpy of Atomization
242.70 kJ/mol   
99+
113.00 kJ/mol   
99+
Standard Molar Entropy
57.80 J/mol.K   
22
51.80 J/mol.K   
27
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