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Mercury vs Manganese

Mercury
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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