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Mercury vs Manganese


Manganese vs Mercury


Periodic Table

Symbol
Hg   
Mn   

Group Number
12   
6
7   
11

Period Number
6   
4   

Block
d block   
d block   

Element Family
Transition Metal   
Transition Metal   

CAS Number
7439976   
99+
7439965   
99+

Space Group Name
R_ 3m   
I_ 43m   

Space Group Number
166.00   
6
217.00   
4

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.
  
  • Manganese is an essential trace element in all forms of life.
  • Manganese metal oxidizes very easily, but it does not fuse that easily.
  

Sources
Mining, Ores of Minerals   
Found in Minerals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Ancient Chinese and Indians   
Johann Gottlieb Gahn   

Discovery
Before 2000 BCE   
In 1774   

Abundance
  
  

Abundance In Universe
Not Available   
8 * 10-4 %   
8

Abundance In Sun
~-9999 %   
~0.001 %   
8

Abundance In Meteorites
Not Available   
0.27 %   
8

Abundance In Earth's Crust
0.05 %   
9
0.11 %   
8

Abundance In Oceans
Not Available   
0.00 %   
13

Abundance In Humans
Not Available   
0.00 %   
13

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.
  
  • This metal is very brittle hence it mostly not used as a pure metal, but its alloys are very useful
  • Its alloy Manganese steel is extremely strong and used in railway tracks, safes, prison bars and riffle barrels.
  

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

Medical Uses
Dentistry   
NA   

Other Uses
Alloys, Mirror Manufacturing, Pharmaceutical Industry   
Alloys   

Biological Properties
  
  

Toxicity
Highly Toxic   
Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.01 Blood/mg dm-3   
23
0.08 Blood/mg dm-3   
14

In Bone
0.45 p.p.m.   
19
100.00 p.p.m.   
8

Physical Properties

Melting Point
Not Available   
1,245.00 °C   
37

Boiling Point
356.58 °C   
99+
1,962.00 °C   
99+

Appearance
  
  

Physical State
Liquid   
Solid   

Color
Silver   
Silver   

Luster
NA   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
6.00   
6

Brinell Hardness
Not Available   
196.00 MPa   
99+

Speed of Sound
1,451.40 m/s   
99+
5,150.00 m/s   
7

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   
Mn   

Isotopes
  
  

Known Isotopes
34   
5
21   
18

Electronegativity
  
  

Pauling Electronegativity
2.00   
7
1.55   
25

Sanderson Electronegativity
2.20   
7
2.20   
7

Allred Rochow Electronegativity
1.44   
17
1.60   
9

Mulliken-Jaffe Electronegativity
1.81   
9
Not Available   

Allen Electronegativity
1.44   
30
1.75   
15

Electropositivity
  
  

Pauling Electropositivity
2.00   
99+
2.45   
29

Ionization Energies
  
  

1st Energy Level
1,007.10 kJ/mol   
4
717.30 kJ/mol   
30

2nd Energy Level
1,810.00 kJ/mol   
20
1,509.00 kJ/mol   
39

3rd Energy Level
3,300.00 kJ/mol   
20
3,248.00 kJ/mol   
21

4th Energy Level
Not Available   
4,940.00 kJ/mol   
20

5th Energy Level
Not Available   
6,990.00 kJ/mol   
17

6th Energy Level
Not Available   
9,220.00 kJ/mol   
16

7th Energy level
Not Available   
11,500.00 kJ/mol   
16

8th Energy Level
Not Available   
18,770.00 kJ/mol   
5

9th Energy Level
Not Available   
21,400.00 kJ/mol   
6

10th Energy Level
Not Available   
23,960.00 kJ/mol   
9

11th Energy Level
Not Available   
27,590.00 kJ/mol   
10

12th Energy Level
Not Available   
30,330.00 kJ/mol   
10

13th Energy Level
Not Available   
33,150.00 kJ/mol   
11

14th Energy Level
Not Available   
38,880.00 kJ/mol   
10

15th Energy Level
Not Available   
41,987.00 kJ/mol   
13

16th Energy Level
Not Available   
109,480.00 kJ/mol   
1

17th Energy Level
Not Available   
118,100.00 kJ/mol   
2

18th Energy Level
Not Available   
127,100.00 kJ/mol   
3

19th Energy Level
Not Available   
138,600.00 kJ/mol   
4

20th Energy Level
Not Available   
148,500.00 kJ/mol   
6

21st Energy Level
Not Available   
158,600.00 kJ/mol   
6

22nd Energy Level
Not Available   
172,500.00 kJ/mol   
5

23rd Energy Level
Not Available   
181,380.00 kJ/mol   
5

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

Electron Work Function
4.49 eV   
15
4.10 eV   
25

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

Atomic Properties

Atomic Number
80   
36
25   
99+

Electron Configuration
[Xe] 4f14 5d10 6s2   
[Ar] 3d5 4s2   

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
25   
99+

Number of Neutrons
121   
22
30   
99+

Number of Electrons
80   
36
25   
99+

Radius of an Atom
  
  

Atomic Radius
151.00 pm   
32
127.00 pm   
99+

Covalent Radius
132.00 pm   
99+
139.00 pm   
99+

Van der Waals Radius
155.00 pm   
99+
200.00 pm   
28

Atomic Weight
200.59 amu   
32
54.94 amu   
99+

Atomic Volume
14.82 cm3/mol   
35
1.39 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Gold
  
Chromium
  

Next Element
Thallium
  
Iron
  

Valence Electron Potential
28.20 (-eV)   
99+
220.00 (-eV)   
2

Lattice Constant
300.50 pm   
99+
891.25 pm   
1

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
7.21 g/cm3   
99+

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

Tensile Strength
Not Available   
Not Available   

Viscosity
0.00   
1
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
12

Elasticity properties
  
  

Bulk Modulus
Not Available   
120.00 GPa   
14

Young's Modulus
Not Available   
198.00 GPa   
12

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
NA   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
13.53   
16
7.21   
99+

Magnetic Ordering
Diamagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
961.00 nΩ·m   
1
1.44 nΩ·m   
99+

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

Electron Affinity
0.00 kJ/mol   
40
0.00 kJ/mol   
40

Thermal Properties

Specific Heat
0.14 J/(kg K)   
38
0.48 J/(kg K)   
11

Molar Heat Capacity
27.98 J/mol·K   
13
26.32 J/mol·K   
29

Thermal Conductivity
8.30 W/m·K   
99+
7.81 W/m·K   
99+

Critical Temperature
1,750.00 K   
6
Not Available   

Thermal Expansion
60.40 µm/(m·K)   
5
21.70 µm/(m·K)   
21

Enthalpy
  
  

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

Enthalpy of Fusion
2.29 kJ/mol   
99+
14.64 kJ/mol   
23

Enthalpy of Atomization
61.50 kJ/mol   
99+
280.30 kJ/mol   
38

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

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