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Lithium vs Cadmium


Cadmium vs Lithium


Periodic Table

Symbol
Li   
Cd   

Group Number
1   
17
12   
6

Period Number
2   
5   

Block
s block   
d block   

Element Family
Alkali   
Transition Metal   

CAS Number
7439932   
99+
7440439   
99+

Space Group Name
Im_ 3m   
P63/mmc   

Space Group Number
229.00   
1
194.00   
5

Facts

Interesting Facts
  • Heat capacity of Lithium is very high.
  • Lithium inflammable and highly explosive metal, hence it has to be stored properly.
  
  • 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
Found in Minerals, Mining   
Found As a By-product, Found in Minerals, Mining   

History
  
  

Who Discovered
Johan August Arfwedson   
Karl Samuel Leberecht Hermann and Friedrich Stromeyer   

Discovery
In 1817   
In 1817   

Abundance
  
  

Abundance In Universe
6 * 10-7 %   
18
2 * 10-7 %   
22

Abundance In Sun
~0.00017 %   
11
~0.0000006 %   
21

Abundance In Meteorites
0.00 %   
22
0.00 %   
31

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

Abundance In Oceans
0.00 %   
15
0.00 %   
28

Abundance In Humans
0.00 %   
16
0.00 %   
11

Uses

Uses & Benefits
  • The main usage of Lithium is manufacturing rechargeable batteries for electronic equipment and gadgets.
  • it is also used in manufacturing non-rechargeable batteries.
  
  • 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, Electrical Industry, Electronic Industry   
Aerospace Industry, Ammunition Industry, Chemical Industry, Electrical Industry, Electronic Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys   

Biological Properties
  
  

Toxicity
NA   
Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.00 Blood/mg dm-3   
27
0.01 Blood/mg dm-3   
24

In Bone
1.30 p.p.m.   
17
1.80 p.p.m.   
15

Physical Properties

Melting Point
180.54 °C   
99+
320.90 °C   
99+

Boiling Point
1,347.00 °C   
99+
765.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery Bluish-Gray   

Luster
NA   
Metallic   

Hardness
  
  

Mohs Hardness
0.60   
21
2.00   
16

Brinell Hardness
5.00 MPa   
99+
203.00 MPa   
39

Speed of Sound
6,000.00 m/s   
3
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
Li   
Cd   

Isotopes
  
  

Known Isotopes
8   
30
34   
5

Electronegativity
  
  

Pauling Electronegativity
0.98   
99+
1.69   
17

Sanderson Electronegativity
0.89   
26
1.98   
9

Allred Rochow Electronegativity
0.97   
38
1.46   
15

Mulliken-Jaffe Electronegativity
0.97   
19
1.53   
13

Allen Electronegativity
0.91   
99+
1.52   
27

Electropositivity
  
  

Pauling Electropositivity
3.02   
8
2.31   
37

Ionization Energies
  
  

1st Energy Level
520.20 kJ/mol   
99+
867.80 kJ/mol   
11

2nd Energy Level
7,298.10 kJ/mol   
3
1,631.40 kJ/mol   
32

3rd Energy Level
11,815.00 kJ/mol   
4
3,616.00 kJ/mol   
13

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

Electron Work Function
2.90 eV   
37
4.22 eV   
22

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

Atomic Properties

Atomic Number
3   
99+
48   
99+

Electron Configuration
[He] 2s1   
[Kr] 4d10 5s2   

Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Cadmium.jpg#100   

Atom
  
  

Number of Protons
3   
99+
48   
99+

Number of Neutrons
4   
99+
64   
99+

Number of Electrons
3   
99+
48   
99+

Radius of an Atom
  
  

Atomic Radius
152.00 pm   
31
151.00 pm   
32

Covalent Radius
128.00 pm   
99+
144.00 pm   
40

Van der Waals Radius
182.00 pm   
35
158.00 pm   
99+

Atomic Weight
6.94 amu   
99+
112.41 amu   
99+

Atomic Volume
13.10 cm3/mol   
39
13.10 cm3/mol   
39

Adjacent Atomic Numbers
  
  

Previous Element
No Previous Element   
Silver
  

Next Element
Beryllium
  
Indium
  

Valence Electron Potential
19.00 (-eV)   
99+
30.00 (-eV)   
99+

Lattice Constant
351.00 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
0.53 g/cm3   
99+
8.65 g/cm3   
99+

Density When Liquid (at m.p.)
0.51 g/cm3   
99+
8.00 g/cm3   
28

Tensile Strength
Not Available   
62.00 MPa   
16

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
109.00 (Pa)   
2
Not Available   

Elasticity properties
  
  

Shear Modulus
4.20 GPa   
99+
19.00 GPa   
35

Bulk Modulus
11.00 GPa   
99+
42.00 GPa   
29

Young's Modulus
4.90 GPa   
99+
50.00 GPa   
36

Poisson Ratio
Not Available   
0.30   
14

Other Mechanical Properties
NA   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
0.53   
99+
8.65   
36

Magnetic Ordering
Paramagnetic   
Diamagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Semiconductor   

Resistivity
92.80 nΩ·m   
33
72.70 nΩ·m   
36

Electrical Conductivity
0.11 106/cm Ω   
19
0.14 106/cm Ω   
15

Electron Affinity
59.60 kJ/mol   
16
0.00 kJ/mol   
40

Thermal Properties

Specific Heat
3.60 J/(kg K)   
1
0.23 J/(kg K)   
26

Molar Heat Capacity
24.86 J/mol·K   
99+
26.02 J/mol·K   
32

Thermal Conductivity
84.80 W/m·K   
20
96.60 W/m·K   
16

Critical Temperature
3,223.00 K   
1
Not Available   

Thermal Expansion
46.00 µm/(m·K)   
7
30.80 µm/(m·K)   
10

Enthalpy
  
  

Enthalpy of Vaporization
134.70 kJ/mol   
99+
100.00 kJ/mol   
99+

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

Enthalpy of Atomization
160.70 kJ/mol   
99+
113.00 kJ/mol   
99+

Standard Molar Entropy
29.10 J/mol.K   
99+
51.80 J/mol.K   
27

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