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Aluminium vs Potassium

Aluminium
Potassium
Potassium vs Aluminium


Periodic Table
Symbol
Al   
K   
Group Number
13   
5
1   
17
Period Number
3   
4   
Block
p block   
s block   
Element Family
Post-​Transition   
Alkali   
CAS Number
7429905   
99+
7440097   
99+
Space Group Name
Fm_ 3m   
Im_ 3m   
Space Group Number
225.00   
2
229.00   
1
Facts
Interesting Facts
  • Aluminum’s abundance percentage is more as it is found in more than 260 minerals.
  • Pure Aluminum always reacts with oxygen rapidly.
  • It is a good conductor of heat and electricity and used in transmission lines.
  
  • In the list of most abundant element Potassium is ranked 7th.
  • Potassium can easily be sliced (chopped) down using knife.
  
Sources
By Electrolysis Process, Earth's crust, Mining   
Found in Minerals, Mining   
History
  
  
Who Discovered
Hans Christian Oersted   
Humphry Davy   
Discovery
In 1825   
In 1807   
Abundance
  
  
Abundance In Universe
5 * 10-3 %   
5
3 * 10-4 %   
9
Abundance In Sun
~0.006 %   
5
~0.0004 %   
9
Abundance In Meteorites
0.91 %   
5
0.07 %   
9
Abundance In Earth's Crust
8.10 %   
1
1.50 %   
6
Abundance In Oceans
0.00 %   
6
0.04 %   
3
Abundance In Humans
0.00 %   
10
0.20 %   
2
Uses
Uses & Benefits
  • Aluminum is used in a various products; for example, cans, foils, kitchen utensils, window frames, beer kegs and aero plane parts, automobile parts, etc.
  
  • 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
Aerospace Industry, Ammunition Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Ammunition Industry, Chemical Industry   
Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   
Pharmaceutical Industry   
Other Uses
Alloys, Jewellery, Sculptures, Statues   
NA   
Biological Properties
  
  
Toxicity
Non Toxic   
Toxic   
Present in Human Body
Yes   
Yes   
In Blood
0.39 Blood/mg dm-3   
9
1,620.00 Blood/mg dm-3   
2
In Bone
27.00 p.p.m.   
11
2,100.00 p.p.m.   
3
Physical Properties
Melting Point
660.37 °C   
99+
63.65 °C   
99+
Boiling Point
2,467.00 °C   
99+
774.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray   
Silvery Gray   
Luster
Metallic   
NA   
Hardness
  
  
Mohs Hardness
2.75   
13
0.40   
23
Brinell Hardness
160.00 MPa   
99+
0.36 MPa   
99+
Vickers Hardness
160.00 MPa   
35
Not Available   
Speed of Sound
5,000.00 m/s   
10
2,000.00 m/s   
99+
Optical Properties
  
  
Reflectivity
71.00 %   
10
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
Al   
K   
Isotopes
  
  
Known Isotopes
11   
27
20   
19
Electronegativity
  
  
Pauling Electronegativity
1.61   
22
0.82   
99+
Sanderson Electronegativity
1.71   
13
0.45   
31
Allred Rochow Electronegativity
1.47   
14
0.91   
39
Mulliken-Jaffe Electronegativity
1.83   
8
0.73   
23
Allen Electronegativity
1.61   
20
0.73   
99+
Electropositivity
  
  
Pauling Electropositivity
2.39   
32
3.18   
3
Ionization Energies
  
  
1st Energy Level
577.50 kJ/mol   
99+
418.80 kJ/mol   
99+
2nd Energy Level
1,816.70 kJ/mol   
19
3,052.00 kJ/mol   
5
3rd Energy Level
2,744.80 kJ/mol   
38
4,420.00 kJ/mol   
8
4th Energy Level
11,577.00 kJ/mol   
3
5,877.00 kJ/mol   
9
5th Energy Level
14,842.00 kJ/mol   
2
7,975.00 kJ/mol   
8
6th Energy Level
18,379.00 kJ/mol   
2
9,590.00 kJ/mol   
13
7th Energy level
23,326.00 kJ/mol   
2
11,343.00 kJ/mol   
17
8th Energy Level
27,465.00 kJ/mol   
2
14,944.00 kJ/mol   
13
9th Energy Level
31,853.00 kJ/mol   
2
16,963.70 kJ/mol   
15
10th Energy Level
38,473.00 kJ/mol   
4
48,610.00 kJ/mol   
3
11th Energy Level
42,647.00 kJ/mol   
5
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
0.34 g/amp-hr   
99+
1.46 g/amp-hr   
99+
Electron Work Function
4.28 eV   
19
2.30 eV   
99+
Other Chemical Properties
Chemical Stability, Ionization, Radioactive Isotopes   
Chemical Stability, Flammability, Ionization, Solubility   
Atomic Properties
Atomic Number
13   
99+
19   
99+
Electron Configuration
[Ne] 3s2 3p1   
[Ar] 4s1   
Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   
Crystal Lattice
FCC-Crystal-Structure-of-Aluminium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
13   
99+
19   
99+
Number of Neutrons
14   
99+
20   
99+
Number of Electrons
13   
99+
19   
99+
Radius of an Atom
  
  
Atomic Radius
143.00 pm   
37
227.00 pm   
3
Covalent Radius
121.00 pm   
99+
203.00 pm   
9
Van der Waals Radius
184.00 pm   
34
275.00 pm   
5
Atomic Weight
26.98 amu   
99+
39.10 amu   
99+
Atomic Volume
10.00 cm3/mol   
99+
45.46 cm3/mol   
3
Adjacent Atomic Numbers
  
  
Previous Element
Magnesium
  
Aluminium
  
Next Element
Potassium
  
Calcium
  
Valence Electron Potential
80.70 (-eV)   
17
10.40 (-eV)   
99+
Lattice Constant
404.95 pm   
22
532.80 pm   
12
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
2.70 g/cm3   
99+
0.86 g/cm3   
99+
Density When Liquid (at m.p.)
2.38 g/cm3   
99+
0.83 g/cm3   
99+
Tensile Strength
40.00 MPa   
19
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
18
Not Available   
Elasticity properties
  
  
Shear Modulus
26.00 GPa   
29
1.30 GPa   
99+
Bulk Modulus
76.00 GPa   
18
3.10 GPa   
99+
Young's Modulus
70.00 GPa   
28
3.53 GPa   
99+
Poisson Ratio
0.35   
9
Not Available   
Other Mechanical Properties
Ductile, Malleable   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
2.72   
99+
0.86   
99+
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Permeability
0.00 H/m   
4
Not Available   
Susceptibility
0.00   
3
Not Available   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
28.20 nΩ·m   
99+
72.00 nΩ·m   
37
Electrical Conductivity
0.38 106/cm Ω   
4
0.14 106/cm Ω   
14
Electron Affinity
42.50 kJ/mol   
26
48.40 kJ/mol   
22
Thermal Properties
Specific Heat
0.90 J/(kg K)   
5
0.75 J/(kg K)   
6
Molar Heat Capacity
24.20 J/mol·K   
99+
29.60 J/mol·K   
6
Thermal Conductivity
237.00 W/m·K   
4
102.50 W/m·K   
15
Critical Temperature
Not Available   
2,223.00 K   
3
Thermal Expansion
23.10 µm/(m·K)   
17
83.30 µm/(m·K)   
3
Enthalpy
  
  
Enthalpy of Vaporization
293.70 kJ/mol   
31
77.50 kJ/mol   
99+
Enthalpy of Fusion
10.67 kJ/mol   
35
2.32 kJ/mol   
99+
Enthalpy of Atomization
322.20 kJ/mol   
31
89.50 kJ/mol   
99+
Standard Molar Entropy
28.30 J/mol.K   
99+
64.70 J/mol.K   
18
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