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Cadmium vs Tin


Tin
Tin vs Cadmium


Periodic Table

Symbol
Cd   
Sn   

Group Number
12   
6
14   
4

Period Number
5   
5   

Block
d block   
p block   

Element Family
Transition Metal   
Post-​Transition   

CAS Number
7440439   
99+
7440315   
99+

Space Group Name
P63/mmc   
I41/amd   

Space Group Number
194.00   
5
141.00   
7

Facts

Interesting Facts
  • 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.
  
  • In the list of most abundant element Tin is ranked 49th.
  • Tin metal does not react with water as well as does not corrode in it.
  

Sources
Found As a By-product, Found in Minerals, Mining   
Found in Minerals, Mining   

History
  
  

Who Discovered
Karl Samuel Leberecht Hermann and Friedrich Stromeyer   
Unknown   

Discovery
In 1817   
Before 3500 BC   

Abundance
  
  

Abundance In Universe
2 * 10-7 %   
22
4 * 10-7 %   
20

Abundance In Sun
~0.0000006 %   
21
~0.0000009 %   
19

Abundance In Meteorites
0.00 %   
31
0.00 %   
24

Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
34

Abundance In Oceans
0.00 %   
28
0.00 %   
26

Abundance In Humans
0.00 %   
11
0.00 %   
13

Uses

Uses & Benefits
  • 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.
  
  • Tin-niobium alloy is used for producing superconducting magnets.
  • Tin salt known as a tin II chloride, it is used as a mordant and as a reducing agent for dyeing calico and silk.
  

Industrial Uses
Aerospace Industry, Ammunition Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Automobile Industry, Chemical Industry, Food Industry   

Medical Uses
NA   
Dentistry   

Other Uses
Alloys   
NA   

Biological Properties
  
  

Toxicity
Toxic   
Non Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.01 Blood/mg dm-3   
24
0.38 Blood/mg dm-3   
10

In Bone
1.80 p.p.m.   
15
1.40 p.p.m.   
16

Physical Properties

Melting Point
320.90 °C   
99+
231.90 °C   
99+

Boiling Point
765.00 °C   
99+
2,270.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery Bluish-Gray   
Silvery White   

Luster
Metallic   
NA   

Hardness
  
  

Mohs Hardness
2.00   
16
1.50   
18

Brinell Hardness
203.00 MPa   
39
50.00 MPa   
99+

Speed of Sound
2,310.00 m/s   
39
2,730.00 m/s   
32

Optical Properties
  
  

Reflectivity
67.00 %   
11
Not Available   

Allotropes
No   
Yes   

α Allotropes
Not Available   
Grey Tin (alpha Tin, Tin Pest)   

β Allotropes
Not Available   
White Tin (Beta Tin)   

γ Allotropes
Not Available   
Rhombic Tin (gamma Tin)   

Chemical Properties

Chemical Formula
Cd   
Sn   

Isotopes
  
  

Known Isotopes
34   
5
35   
4

Electronegativity
  
  

Pauling Electronegativity
1.69   
17
1.96   
8

Sanderson Electronegativity
1.98   
9
1.49   
15

Allred Rochow Electronegativity
1.46   
15
1.72   
4

Mulliken-Jaffe Electronegativity
1.53   
13
2.21   
3

Allen Electronegativity
1.52   
27
1.82   
11

Electropositivity
  
  

Pauling Electropositivity
2.31   
37
2.04   
99+

Ionization Energies
  
  

1st Energy Level
867.80 kJ/mol   
11
708.60 kJ/mol   
33

2nd Energy Level
1,631.40 kJ/mol   
32
1,411.80 kJ/mol   
99+

3rd Energy Level
3,616.00 kJ/mol   
13
2,943.00 kJ/mol   
30

4th Energy Level
Not Available   
3,930.30 kJ/mol   
99+

5th Energy Level
Not Available   
7,456.00 kJ/mol   
13

Electrochemical Equivalent
2.10 g/amp-hr   
27
1.11 g/amp-hr   
99+

Electron Work Function
4.22 eV   
22
4.42 eV   
16

Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Ionization, Solubility   

Atomic Properties

Atomic Number
48   
99+
50   
99+

Electron Configuration
[Kr] 4d10 5s2   
[Kr] 4d10 5s2 5p2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Tetragonal (TETR)   

Crystal Lattice
HCP-Crystal-Structure-of-Cadmium.jpg#100   
TETR-Crystal-Structure-of-Tin.jpg#100   

Atom
  
  

Number of Protons
48   
99+
50   
99+

Number of Neutrons
64   
99+
69   
99+

Number of Electrons
48   
99+
50   
99+

Radius of an Atom
  
  

Atomic Radius
151.00 pm   
32
140.00 pm   
38

Covalent Radius
144.00 pm   
40
139.00 pm   
99+

Van der Waals Radius
158.00 pm   
99+
217.00 pm   
23

Atomic Weight
112.41 amu   
99+
118.71 amu   
99+

Atomic Volume
13.10 cm3/mol   
39
16.30 cm3/mol   
32

Adjacent Atomic Numbers
  
  

Previous Element
Silver
  
Indium
  

Next Element
Indium
  
Cesium
  

Valence Electron Potential
30.00 (-eV)   
99+
83.50 (-eV)   
14

Lattice Constant
297.94 pm   
99+
583.18 pm   
7

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
1.89   
1
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
8.65 g/cm3   
99+
7.37 g/cm3   
99+

Density When Liquid (at m.p.)
8.00 g/cm3   
28
6.99 g/cm3   
34

Tensile Strength
62.00 MPa   
16
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
17

Elasticity properties
  
  

Shear Modulus
19.00 GPa   
35
18.00 GPa   
36

Bulk Modulus
42.00 GPa   
29
58.00 GPa   
20

Young's Modulus
50.00 GPa   
36
50.00 GPa   
36

Poisson Ratio
0.30   
14
0.36   
8

Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
8.65   
36
7.31   
99+

Magnetic Ordering
Diamagnetic   
Diamagnetic   

Electrical Properties
  
  

Electrical Property
Semiconductor   
Superconductor   

Resistivity
72.70 nΩ·m   
36
115.00 nΩ·m   
28

Electrical Conductivity
0.14 106/cm Ω   
15
0.09 106/cm Ω   
23

Electron Affinity
0.00 kJ/mol   
40
107.30 kJ/mol   
8

Thermal Properties

Specific Heat
0.23 J/(kg K)   
26
0.23 J/(kg K)   
28

Molar Heat Capacity
26.02 J/mol·K   
32
27.11 J/mol·K   
20

Thermal Conductivity
96.60 W/m·K   
16
66.80 W/m·K   
25

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
30.80 µm/(m·K)   
10
22.00 µm/(m·K)   
20

Enthalpy
  
  

Enthalpy of Vaporization
100.00 kJ/mol   
99+
290.40 kJ/mol   
32

Enthalpy of Fusion
6.19 kJ/mol   
99+
7.03 kJ/mol   
99+

Enthalpy of Atomization
113.00 kJ/mol   
99+
301.30 kJ/mol   
35

Standard Molar Entropy
51.80 J/mol.K   
27
51.20 J/mol.K   
29

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