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Mercury vs Indium


Indium vs Mercury


Periodic Table

Symbol
Hg   
In   

Group Number
12   
6
13   
5

Period Number
6   
5   

Block
d block   
p block   

Element Family
Transition Metal   
Post-​Transition   

CAS Number
7439976   
99+
7440746   
17

Space Group Name
R_ 3m   
I4/mmm   

Space Group Number
166.00   
6
139.00   
8

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.
  
  • Luster of Indium is bright in nature.
  • Reich and richer were looking for thallium in zinc metal and they discovered Indium metal.
  

Sources
Mining, Ores of Minerals   
Mining, Ores of metals   

History
  
  

Who Discovered
Ancient Chinese and Indians   
Ferdinand Reich and Hieronymous Theodor Richter   

Discovery
Before 2000 BCE   
In 1863   

Abundance
  
  

Abundance In Universe
Not Available   
3 * 10-8 %   
28

Abundance In Sun
~-9999 %   
~0.0000004 %   
23

Abundance In Meteorites
Not Available   
0.00 %   
99+

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

Abundance In Oceans
Not Available   
0.00 %   
99+

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.
  
  • 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.
  

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

Medical Uses
Dentistry   
Medical Research   

Other Uses
Alloys, Mirror Manufacturing, Pharmaceutical Industry   
Alloys, In Nuclear Reactors   

Biological Properties
  
  

Toxicity
Highly Toxic   
Non Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.01 Blood/mg dm-3   
23
Not Available   

In Bone
0.45 p.p.m.   
19
Not Available   

Physical Properties

Melting Point
Not Available   
156.61 °C   
99+

Boiling Point
356.58 °C   
99+
2,000.00 °C   
99+

Appearance
  
  

Physical State
Liquid   
Solid   

Color
Silver   
Silvery Gray   

Luster
NA   
Lustrous   

Hardness
  
  

Mohs Hardness
Not Available   
1.20   
20

Brinell Hardness
Not Available   
8.80 MPa   
99+

Speed of Sound
1,451.40 m/s   
99+
1,215.00 m/s   
99+

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   
In   

Isotopes
  
  

Known Isotopes
34   
5
35   
4

Electronegativity
  
  

Pauling Electronegativity
2.00   
7
1.78   
16

Sanderson Electronegativity
2.20   
7
2.14   
8

Allred Rochow Electronegativity
1.44   
17
1.49   
13

Mulliken-Jaffe Electronegativity
1.81   
9
1.76   
10

Allen Electronegativity
1.44   
30
1.66   
18

Electropositivity
  
  

Pauling Electropositivity
2.00   
99+
2.22   
38

Ionization Energies
  
  

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

2nd Energy Level
1,810.00 kJ/mol   
20
1,820.70 kJ/mol   
18

3rd Energy Level
3,300.00 kJ/mol   
20
2,704.00 kJ/mol   
39

4th Energy Level
Not Available   
5,210.00 kJ/mol   
17

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

Electron Work Function
4.49 eV   
15
4.12 eV   
24

Other Chemical Properties
Flammability, Ionization, Solubility   
Ionization, Radioactive Isotopes, Radioactivity, Solubility   

Atomic Properties

Atomic Number
80   
36
49   
99+

Electron Configuration
[Xe] 4f14 5d10 6s2   
[Kr] 4d10 5s2 5p1   

Crystal Structure
Rhombohedral (RHO)   
Tetragonal (TETR)   

Crystal Lattice
RHO-Crystal-Structure-of-Mercury.jpg#100   
TETR-Crystal-Structure-of-Indium.jpg#100   

Atom
  
  

Number of Protons
80   
36
49   
99+

Number of Neutrons
121   
22
66   
99+

Number of Electrons
80   
36
49   
99+

Radius of an Atom
  
  

Atomic Radius
151.00 pm   
32
167.00 pm   
24

Covalent Radius
132.00 pm   
99+
142.00 pm   
99+

Van der Waals Radius
155.00 pm   
99+
193.00 pm   
31

Atomic Weight
200.59 amu   
32
114.82 amu   
99+

Atomic Volume
14.82 cm3/mol   
35
15.70 cm3/mol   
33

Adjacent Atomic Numbers
  
  

Previous Element
Gold
  
Cadmium
  

Next Element
Thallium
  
Tin
  

Valence Electron Potential
28.20 (-eV)   
99+
54.00 (-eV)   
25

Lattice Constant
300.50 pm   
99+
325.23 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
7.31 g/cm3   
99+

Density When Liquid (at m.p.)
Not Available   
7.02 g/cm3   
33

Tensile Strength
Not Available   
2.50 MPa   
21

Viscosity
0.00   
1
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.01 (Pa)   
11

Elasticity properties
  
  

Young's Modulus
Not Available   
11.00 GPa   
99+

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
NA   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
13.53   
16
7.31   
99+

Magnetic Ordering
Diamagnetic   
Diamagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
961.00 nΩ·m   
1
83.70 nΩ·m   
34

Electrical Conductivity
0.01 106/cm Ω   
99+
0.12 106/cm Ω   
17

Electron Affinity
0.00 kJ/mol   
40
28.90 kJ/mol   
31

Thermal Properties

Specific Heat
0.14 J/(kg K)   
38
0.23 J/(kg K)   
27

Molar Heat Capacity
27.98 J/mol·K   
13
26.74 J/mol·K   
25

Thermal Conductivity
8.30 W/m·K   
99+
81.80 W/m·K   
21

Critical Temperature
1,750.00 K   
6
Not Available   

Thermal Expansion
60.40 µm/(m·K)   
5
32.10 µm/(m·K)   
9

Enthalpy
  
  

Enthalpy of Vaporization
56.90 kJ/mol   
99+
226.40 kJ/mol   
40

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

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

Standard Molar Entropy
75.80 J/mol.K   
6
57.80 J/mol.K   
22

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