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Mercury vs Potassium

Mercury
Potassium
Potassium vs Mercury


Periodic Table
Symbol
Hg   
K   
Group Number
12   
6
1   
17
Period Number
6   
4   
Block
d block   
s block   
Element Family
Transition Metal   
Alkali   
CAS Number
7439976   
99+
7440097   
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.
  
  • In the list of most abundant element Potassium is ranked 7th.
  • Potassium can easily be sliced (chopped) down using knife.
  
Sources
Mining, Ores of Minerals   
Found in Minerals, Mining   
History
  
  
Who Discovered
Ancient Chinese and Indians   
Humphry Davy   
Discovery
Before 2000 BCE   
In 1807   
Abundance
  
  
Abundance In Universe
Not Available   
3 * 10-4 %   
9
Abundance In Sun
~-9999 %   
~0.0004 %   
9
Abundance In Meteorites
Not Available   
0.07 %   
9
Abundance In Earth's Crust
0.05 %   
9
1.50 %   
6
Abundance In Oceans
Not Available   
0.04 %   
3
Abundance In Humans
Not Available   
0.20 %   
2
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.
  
  • Potassium’s compounds are in high demand for their application in Fertilizer manufacturing.
  • Potassium carbonate is used in glass manufacturing and Potassium carbonate in manufacturing detergent and body wash.
  
Industrial Uses
Electrical Industry, Electronic Industry   
Ammunition Industry, Chemical Industry   
Medical Uses
Dentistry   
Pharmaceutical Industry   
Other Uses
Alloys, Mirror Manufacturing, Pharmaceutical Industry   
NA   
Biological Properties
  
  
Toxicity
Highly Toxic   
Toxic   
Present in Human Body
Yes   
Yes   
In Blood
0.01 Blood/mg dm-3   
23
1,620.00 Blood/mg dm-3   
2
In Bone
0.45 p.p.m.   
19
2,100.00 p.p.m.   
3
Physical Properties
Melting Point
Not Available   
63.65 °C   
99+
Boiling Point
356.58 °C   
99+
774.00 °C   
99+
Appearance
  
  
Physical State
Liquid   
Solid   
Color
Silver   
Silvery Gray   
Luster
NA   
NA   
Hardness
  
  
Mohs Hardness
Not Available   
0.40   
23
Brinell Hardness
Not Available   
0.36 MPa   
99+
Speed of Sound
1,451.40 m/s   
99+
2,000.00 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   
K   
Isotopes
  
  
Known Isotopes
34   
5
20   
19
Electronegativity
  
  
Pauling Electronegativity
2.00   
7
0.82   
99+
Sanderson Electronegativity
2.20   
7
0.45   
31
Allred Rochow Electronegativity
1.44   
17
0.91   
39
Mulliken-Jaffe Electronegativity
1.81   
9
0.73   
23
Allen Electronegativity
1.44   
30
0.73   
99+
Electropositivity
  
  
Pauling Electropositivity
2.00   
99+
3.18   
3
Ionization Energies
  
  
1st Energy Level
1,007.10 kJ/mol   
4
418.80 kJ/mol   
99+
2nd Energy Level
1,810.00 kJ/mol   
20
3,052.00 kJ/mol   
5
3rd Energy Level
3,300.00 kJ/mol   
20
4,420.00 kJ/mol   
8
4th Energy Level
Not Available   
5,877.00 kJ/mol   
9
5th Energy Level
Not Available   
7,975.00 kJ/mol   
8
6th Energy Level
Not Available   
9,590.00 kJ/mol   
13
7th Energy level
Not Available   
11,343.00 kJ/mol   
17
8th Energy Level
Not Available   
14,944.00 kJ/mol   
13
9th Energy Level
Not Available   
16,963.70 kJ/mol   
15
10th Energy Level
Not Available   
48,610.00 kJ/mol   
3
11th Energy Level
Not Available   
54,490.00 kJ/mol   
4
12th Energy Level
Not Available   
60,730.00 kJ/mol   
4
13th Energy Level
Not Available   
68,950.00 kJ/mol   
4
14th Energy Level
Not Available   
75,900.00 kJ/mol   
5
15th Energy Level
Not Available   
83,080.00 kJ/mol   
6
16th Energy Level
Not Available   
93,400.00 kJ/mol   
7
17th Energy Level
Not Available   
99,710.00 kJ/mol   
8
Electrochemical Equivalent
3.74 g/amp-hr   
10
1.46 g/amp-hr   
99+
Electron Work Function
4.49 eV   
15
2.30 eV   
99+
Other Chemical Properties
Flammability, Ionization, Solubility   
Chemical Stability, Flammability, Ionization, Solubility   
Atomic Properties
Atomic Number
80   
36
19   
99+
Electron Configuration
[Xe] 4f14 5d10 6s2   
[Ar] 4s1   
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
19   
99+
Number of Neutrons
121   
22
20   
99+
Number of Electrons
80   
36
19   
99+
Radius of an Atom
  
  
Atomic Radius
151.00 pm   
32
227.00 pm   
3
Covalent Radius
132.00 pm   
99+
203.00 pm   
9
Van der Waals Radius
155.00 pm   
99+
275.00 pm   
5
Atomic Weight
200.59 amu   
32
39.10 amu   
99+
Atomic Volume
14.82 cm3/mol   
35
45.46 cm3/mol   
3
Adjacent Atomic Numbers
  
  
Previous Element
Gold
  
Aluminium
  
Next Element
Thallium
  
Calcium
  
Valence Electron Potential
28.20 (-eV)   
99+
10.40 (-eV)   
99+
Lattice Constant
300.50 pm   
99+
532.80 pm   
12
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
0.86 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
0.83 g/cm3   
99+
Tensile Strength
Not Available   
Not Available   
Viscosity
0.00   
1
Not Available   
Vapor Pressure
  
  
Elasticity properties
  
  
Shear Modulus
Not Available   
1.30 GPa   
99+
Bulk Modulus
Not Available   
3.10 GPa   
99+
Young's Modulus
Not Available   
3.53 GPa   
99+
Poisson Ratio
Not Available   
Not Available   
Other Mechanical Properties
NA   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
13.53   
16
0.86   
99+
Magnetic Ordering
Diamagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
961.00 nΩ·m   
1
72.00 nΩ·m   
37
Electrical Conductivity
0.01 106/cm Ω   
99+
0.14 106/cm Ω   
14
Electron Affinity
0.00 kJ/mol   
40
48.40 kJ/mol   
22
Thermal Properties
Specific Heat
0.14 J/(kg K)   
38
0.75 J/(kg K)   
6
Molar Heat Capacity
27.98 J/mol·K   
13
29.60 J/mol·K   
6
Thermal Conductivity
8.30 W/m·K   
99+
102.50 W/m·K   
15
Critical Temperature
1,750.00 K   
6
2,223.00 K   
3
Thermal Expansion
60.40 µm/(m·K)   
5
83.30 µm/(m·K)   
3
Enthalpy
  
  
Enthalpy of Vaporization
56.90 kJ/mol   
99+
77.50 kJ/mol   
99+
Enthalpy of Fusion
2.29 kJ/mol   
99+
2.32 kJ/mol   
99+
Enthalpy of Atomization
61.50 kJ/mol   
99+
89.50 kJ/mol   
99+
Standard Molar Entropy
75.80 J/mol.K   
6
64.70 J/mol.K   
18
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