Symbol
Hg
  
Zn
  
Period Number
6
  
4
  
Block
d block
  
d block
  
Element Family
Transition Metal
  
Transition Metal
  
Space Group Name
R_ 3m
  
P63/mmc
  
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.
  
- Zinc metal found (obtain) in many forms like granules, foil, dust and in a powder form.
- The leading producers of Zinc metal are Australia, Canada, China, U.S.A and Peru.
  
Sources
Mining, Ores of Minerals
  
Earth's crust, Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Ancient Chinese and Indians
  
Indian metallurgists
  
Discovery
Before 2000 BCE
  
Before 1000 BCE
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Abundance In Oceans
Not Available
  
Abundance In Humans
Not Available
  
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 mainly used for Galvanizing other metals.
- It is also used for manufacturing die-casting and it is very essential for automobile industry.
  
Industrial Uses
Electrical Industry, Electronic Industry
  
Electrical Industry, Electronic Industry
  
Medical Uses
Dentistry
  
Pharmaceutical Industry
  
Other Uses
Alloys, Mirror Manufacturing, Pharmaceutical Industry
  
Alloys
  
Biological Properties
  
  
Toxicity
Highly Toxic
  
Highly Toxic
  
Present in Human Body
Yes
  
Yes
  
In Blood
0.01 Blood/mg dm-3
  
23
7.00 Blood/mg dm-3
  
6
In Bone
0.45 p.p.m.
  
19
170.00 p.p.m.
  
6
Melting Point
Not Available
  
Appearance
  
  
Physical State
Liquid
  
Solid
  
Color
Silver
  
Silvery Gray
  
Luster
NA
  
Metallic
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Speed of Sound
1,451.40 m/s
  
99+
3,850.00 m/s
  
18
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Hg
  
Zn
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
1,007.10 kJ/mol
  
4
906.40 kJ/mol
  
6
2nd Energy Level
1,810.00 kJ/mol
  
20
1,733.30 kJ/mol
  
27
3rd Energy Level
3,300.00 kJ/mol
  
20
3,833.00 kJ/mol
  
12
4th Energy Level
Not Available
  
5,731.00 kJ/mol
  
11
5th Energy Level
Not Available
  
7,970.00 kJ/mol
  
9
6th Energy Level
Not Available
  
10,400.00 kJ/mol
  
9
7th Energy level
Not Available
  
12,900.00 kJ/mol
  
9
8th Energy Level
Not Available
  
16,800.00 kJ/mol
  
6
9th Energy Level
Not Available
  
19,600.00 kJ/mol
  
8
10th Energy Level
Not Available
  
23,000.00 kJ/mol
  
10
11th Energy Level
Not Available
  
26,400.00 kJ/mol
  
11
12th Energy Level
Not Available
  
29,990.00 kJ/mol
  
11
13th Energy Level
Not Available
  
40,490.00 kJ/mol
  
5
14th Energy Level
Not Available
  
43,800.00 kJ/mol
  
6
15th Energy Level
Not Available
  
47,300.00 kJ/mol
  
8
16th Energy Level
Not Available
  
52,300.00 kJ/mol
  
9
17th Energy Level
Not Available
  
55,900.00 kJ/mol
  
10
18th Energy Level
Not Available
  
59,700.00 kJ/mol
  
11
19th Energy Level
Not Available
  
67,300.00 kJ/mol
  
10
20th Energy Level
Not Available
  
171,200.00 kJ/mol
  
1
21st Energy Level
Not Available
  
179,100.00 kJ/mol
  
1
Electrochemical Equivalent
3.74 g/amp-hr
  
10
1.22 g/amp-hr
  
99+
Other Chemical Properties
Flammability, Ionization, Solubility
  
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes
  
Electron Configuration
[Xe] 4f14 5d10 6s2
  
[Ar] 3d10 4s2
  
Crystal Structure
Rhombohedral (RHO)
  
Hexagonal Close Packed (HCP)
  
Crystal Lattice
RHO-Crystal-Structure-of-Mercury.jpg#100
  
HCP-Crystal-Structure-of-Zinc.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Volume
14.82 cm3/mol
  
35
9.20 cm3/mol
  
99+
Adjacent Atomic Numbers
  
  
Valence Electron Potential
28.20 (-eV)
  
99+
38.90 (-eV)
  
99+
Lattice Angles
NA
  
π/2, π/2, 2 π/3
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
13.53 g/cm3
  
24
7.14 g/cm3
  
99+
Density When Liquid (at m.p.)
Not Available
  
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
NA
  
NA
  
Magnetic Characteristics
  
  
Magnetic Ordering
Diamagnetic
  
Diamagnetic
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Conductor
  
Electrical Conductivity
0.01 106/cm Ω
  
99+
0.17 106/cm Ω
  
12
Electron Affinity
0.00 kJ/mol
  
40
0.00 kJ/mol
  
40
Specific Heat
0.14 J/(kg K)
  
38
0.39 J/(kg K)
  
14
Molar Heat Capacity
27.98 J/mol·K
  
13
25.47 J/mol·K
  
39
Thermal Conductivity
8.30 W/m·K
  
99+
116.00 W/m·K
  
14
Critical Temperature
Not Available
  
Thermal Expansion
60.40 µm/(m·K)
  
5
30.20 µm/(m·K)
  
11
Enthalpy
  
  
Enthalpy of Vaporization
56.90 kJ/mol
  
99+
7.32 kJ/mol
  
99+
Enthalpy of Fusion
2.29 kJ/mol
  
99+
7.32 kJ/mol
  
99+
Enthalpy of Atomization
61.50 kJ/mol
  
99+
129.70 kJ/mol
  
99+
Standard Molar Entropy
75.80 J/mol.K
  
6
41.60 J/mol.K
  
36