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Mercury vs Lithium


Lithium vs Mercury


Periodic Table

Symbol
Hg   
Li   

Group Number
12   
6
1   
17

Period Number
6   
2   

Block
d block   
s block   

Element Family
Transition Metal   
Alkali   

CAS Number
7439976   
99+
7439932   
99+

Space Group Name
R_ 3m   
Im_ 3m   

Space Group Number
166.00   
6
229.00   
1

Facts

Interesting Facts
  • At room temperature mercury is found in a liquid state.
  • A coin of pound or rupees floats in mercury.
  • Because of its low melting point and boiling point it is used in thermometers.
  
  • Heat capacity of Lithium is very high.
  • Lithium inflammable and highly explosive metal, hence it has to be stored properly.
  

Sources
Mining, Ores of Minerals   
Found in Minerals, Mining   

History
  
  

Who Discovered
Ancient Chinese and Indians   
Johan August Arfwedson   

Discovery
Before 2000 BCE   
In 1817   

Abundance
  
  

Abundance In Universe
Not Available   
6 * 10-7 %   
18

Abundance In Sun
~-9999 %   
~0.00017 %   
11

Abundance In Meteorites
Not Available   
0.00 %   
22

Abundance In Earth's Crust
0.05 %   
9
0.00 %   
99+

Abundance In Oceans
Not Available   
0.00 %   
15

Abundance In Humans
Not Available   
0.00 %   
16

Uses

Uses & Benefits
  • It is a liquid metal at room temperature, but it is a toxic heavy metal and hence many uses of mercury are under review or phased out.
  • It is manly used as a catalysts in chemical industry.
  
  • The main usage of Lithium is manufacturing rechargeable batteries for electronic equipment and gadgets.
  • it is also used in manufacturing non-rechargeable batteries.
  

Industrial Uses
Electrical Industry, Electronic Industry   
Aerospace Industry, Electrical Industry, Electronic Industry   

Medical Uses
Dentistry   
NA   

Other Uses
Alloys, Mirror Manufacturing, Pharmaceutical Industry   
Alloys   

Biological Properties
  
  

Toxicity
Highly Toxic   
NA   

Present in Human Body
Yes   
Yes   

In Blood
0.01 Blood/mg dm-3   
23
0.00 Blood/mg dm-3   
27

In Bone
0.45 p.p.m.   
19
1.30 p.p.m.   
17

Physical Properties

Melting Point
Not Available   
180.54 °C   
99+

Boiling Point
356.58 °C   
99+
1,347.00 °C   
99+

Appearance
  
  

Physical State
Liquid   
Solid   

Color
Silver   
Silvery White   

Luster
NA   
NA   

Hardness
  
  

Mohs Hardness
Not Available   
0.60   
21

Brinell Hardness
Not Available   
5.00 MPa   
99+

Speed of Sound
1,451.40 m/s   
99+
6,000.00 m/s   
3

Optical Properties
  
  

Refractive Index
1.00   
3
Not Available   

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
Hg   
Li   

Isotopes
  
  

Known Isotopes
34   
5
8   
30

Electronegativity
  
  

Pauling Electronegativity
2.00   
7
0.98   
99+

Sanderson Electronegativity
2.20   
7
0.89   
26

Allred Rochow Electronegativity
1.44   
17
0.97   
38

Mulliken-Jaffe Electronegativity
1.81   
9
0.97   
19

Allen Electronegativity
1.44   
30
0.91   
99+

Electropositivity
  
  

Pauling Electropositivity
2.00   
99+
3.02   
8

Ionization Energies
  
  

1st Energy Level
1,007.10 kJ/mol   
4
520.20 kJ/mol   
99+

2nd Energy Level
1,810.00 kJ/mol   
20
7,298.10 kJ/mol   
3

3rd Energy Level
3,300.00 kJ/mol   
20
11,815.00 kJ/mol   
4

Electrochemical Equivalent
3.74 g/amp-hr   
10
0.26 g/amp-hr   
99+

Electron Work Function
4.49 eV   
15
2.90 eV   
37

Other Chemical Properties
Flammability, Ionization, Solubility   
Corrosion, Flammable, Ionization, Radioactive Isotopes   

Atomic Properties

Atomic Number
80   
36
3   
99+

Electron Configuration
[Xe] 4f14 5d10 6s2   
[He] 2s1   

Crystal Structure
Rhombohedral (RHO)   
Body Centered Cubic (BCC)   

Crystal Lattice
RHO-Crystal-Structure-of-Mercury.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
80   
36
3   
99+

Number of Neutrons
121   
22
4   
99+

Number of Electrons
80   
36
3   
99+

Radius of an Atom
  
  

Atomic Radius
151.00 pm   
32
152.00 pm   
31

Covalent Radius
132.00 pm   
99+
128.00 pm   
99+

Van der Waals Radius
155.00 pm   
99+
182.00 pm   
35

Atomic Weight
200.59 amu   
32
6.94 amu   
99+

Atomic Volume
14.82 cm3/mol   
35
13.10 cm3/mol   
39

Adjacent Atomic Numbers
  
  

Previous Element
Gold
  
No Previous Element   

Next Element
Thallium
  
Beryllium
  

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

Lattice Constant
300.50 pm   
99+
351.00 pm   
99+

Lattice Angles
NA   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
13.53 g/cm3   
24
0.53 g/cm3   
99+

Density When Liquid (at m.p.)
Not Available   
0.51 g/cm3   
99+

Tensile Strength
Not Available   
Not Available   

Viscosity
0.00   
1
Not Available   

Vapor Pressure
  
  

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

Elasticity properties
  
  

Shear Modulus
Not Available   
4.20 GPa   
99+

Bulk Modulus
Not Available   
11.00 GPa   
99+

Young's Modulus
Not Available   
4.90 GPa   
99+

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
NA   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
13.53   
16
0.53   
99+

Magnetic Ordering
Diamagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
961.00 nΩ·m   
1
92.80 nΩ·m   
33

Electrical Conductivity
0.01 106/cm Ω   
99+
0.11 106/cm Ω   
19

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

Thermal Properties

Specific Heat
0.14 J/(kg K)   
38
3.60 J/(kg K)   
1

Molar Heat Capacity
27.98 J/mol·K   
13
24.86 J/mol·K   
99+

Thermal Conductivity
8.30 W/m·K   
99+
84.80 W/m·K   
20

Critical Temperature
1,750.00 K   
6
3,223.00 K   
1

Thermal Expansion
60.40 µm/(m·K)   
5
46.00 µm/(m·K)   
7

Enthalpy
  
  

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

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

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

Standard Molar Entropy
75.80 J/mol.K   
6
29.10 J/mol.K   
99+

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