1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
1.6 CAS Number
74403487440097
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
Not Available
- In the list of most abundant element Potassium is ranked 7th.
- Potassium can easily be sliced (chopped) down using knife.
2.2 Sources
Obtained by Treating Radium with Neutrons, Ores of metals
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Friedrich Oskar Giesel
Humphry Davy
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.6.2 Abundance In Sun
~-9999 %~0.0004 %
1E-08
0.1
2.8.2 Abundance In Meteorites
2.9.5 Abundance In Earth's Crust
2.10.2 Abundance In Oceans
2.10.7 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
- 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.
3.1.2 Industrial Uses
NA
Ammunition Industry, Chemical Industry
3.1.3 Medical Uses
NA
Pharmaceutical Industry
3.1.4 Other Uses
Alloys, Nuclear Research, Research Purposes
NA
3.2 Biological Properties
3.2.1 Toxicity
3.2.2 Present in Human Body
3.2.5 In Blood
0.00 Blood/mg dm-31,620.00 Blood/mg dm-3
0
1970
3.4.1 In Bone
0.00 p.p.m.2,100.00 p.p.m.
0
170000
4 Physical
4.1 Melting Point
1,227.00 °C63.65 °C
27
3410
5.2 Boiling Point
3,200.00 °C774.00 °C
147
5660
5.6 Appearance
5.6.1 Physical State
5.6.2 Color
Silvery White
Silvery Gray
5.6.3 Luster
5.7 Hardness
5.7.1 Mohs Hardness
5.7.4 Brinell Hardness
5.7.6 Vickers Hardness
5.8 Speed of Sound
5.10 Optical Properties
5.10.1 Refractive Index
5.10.3 Reflectivity
5.11 Allotropes
5.11.1 α Allotropes
Not Available
Not Available
5.11.2 β Allotropes
Not Available
Not Available
5.11.3 γ Allotropes
Not Available
Not Available
6 Chemical
6.1 Chemical Formula
6.2 Isotopes
6.2.1 Known Isotopes
6.4 Electronegativity
6.4.1 Pauling Electronegativity
6.5.2 Sanderson Electronegativity
6.7.2 Allred Rochow Electronegativity
6.7.4 Mulliken-Jaffe Electronegativity
6.8.2 Allen Electronegativity
6.11 Electropositivity
6.11.1 Pauling Electropositivity
7.2 Ionization Energies
7.2.1 1st Energy Level
499.00 kJ/mol418.80 kJ/mol
375.7
26130
7.2.4 2nd Energy Level
1,170.00 kJ/mol3,052.00 kJ/mol
710.2162
28750
7.2.6 3rd Energy Level
1,900.00 kJ/mol4,420.00 kJ/mol
1600
34230
7.4.1 4th Energy Level
4,700.00 kJ/mol5,877.00 kJ/mol
2780
37066
7.7.1 5th Energy Level
NA7,975.00 kJ/mol
4305.2
97510
7.7.3 6th Energy Level
NA9,590.00 kJ/mol
5715.8
105800
8.2.2 7th Energy level
NA11,343.00 kJ/mol
7226.8
114300
8.5.2 8th Energy Level
NA14,944.00 kJ/mol
8857.4
125300
8.5.4 9th Energy Level
NA16,963.70 kJ/mol
14110
134700
1.2.2 10th Energy Level
NA48,610.00 kJ/mol
17100
144300
1.3.1 11th Energy Level
NA54,490.00 kJ/mol
19900
169988
1.4.1 12th Energy Level
NA60,730.00 kJ/mol
22219
189368
1.8.2 13th Energy Level
NA68,950.00 kJ/mol
26930
76015
2.3.2 14th Energy Level
NA75,900.00 kJ/mol
29196
86450
3.2.1 15th Energy Level
NA83,080.00 kJ/mol
41987
97510
3.5.1 16th Energy Level
NA93,400.00 kJ/mol
47206
109480
3.7.1 17th Energy Level
NA99,710.00 kJ/mol
52737
122200
3.7.4 18th Energy Level
3.9.1 19th Energy Level
3.10.1 20th Energy Level
3.10.2 21st Energy Level
4.3.1 22nd Energy Level
5.2.1 23rd Energy Level
5.2.2 24th Energy Level
6.3.1 25th Energy Level
6.3.2 26th Energy Level
6.5.1 27th Energy Level
7.2.1 28th Energy Level
7.4.2 29th Energy Level
7.5.1 30th Energy Level
7.7 Electrochemical Equivalent
2.82 g/amp-hr1.46 g/amp-hr
0.16812
8.3209
7.10 Electron Work Function
7.12 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Flammability, Ionization, Solubility
8 Atomic
8.1 Atomic Number
8.2 Electron Configuration
8.3 Crystal Structure
Face Centered Cubic (FCC)
Body Centered Cubic (BCC)
8.3.1 Crystal Lattice
8.4 Atom
8.4.1 Number of Protons
8.5.2 Number of Neutrons
8.5.4 Number of Electrons
8.8 Radius of an Atom
8.8.1 Atomic Radius
195.00 pm227.00 pm
112
265
9.2.2 Covalent Radius
9.2.6 Van der Waals Radius
10.3 Atomic Weight
227.00 amu39.10 amu
6.94
294
10.6 Atomic Volume
22.54 cm3/mol45.46 cm3/mol
1.39
71.07
10.7 Adjacent Atomic Numbers
10.7.1 Previous Element
10.7.2 Next Element
10.8 Valence Electron Potential
38.60 (-eV)10.40 (-eV)
8
392.42
10.9 Lattice Constant
567.00 pm532.80 pm
228.58
891.25
11.2 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
11.3 Lattice C/A Ratio
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
10.00 g/cm30.86 g/cm3
0.534
40.7
12.3.1 Density When Liquid (at m.p.)
12.5 Tensile Strength
12.8 Viscosity
12.10 Vapor Pressure
12.10.1 Vapor Pressure at 1000 K
12.10.3 Vapor Pressure at 2000 K
12.12 Elasticity properties
12.12.1 Shear Modulus
12.12.4 Bulk Modulus
12.12.8 Young's Modulus
12.14 Poisson Ratio
12.15 Other Mechanical Properties
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
13.1.3 Magnetic Ordering
Paramagnetic
Paramagnetic
13.1.4 Permeability
13.1.6 Susceptibility
13.2 Electrical Properties
13.2.1 Electrical Property
13.2.2 Resistivity
13.2.5 Electrical Conductivity
NA0.14 106/cm Ω
0.00666
0.63
13.2.7 Electron Affinity
14 Thermal
14.1 Specific Heat
0.12 J/(kg K)0.75 J/(kg K)
0.11
3.6
14.2 Molar Heat Capacity
27.20 J/mol·K29.60 J/mol·K
16.443
62.7
14.3 Thermal Conductivity
12.00 W/m·K102.50 W/m·K
6.3
429
14.4 Critical Temperature
14.5 Thermal Expansion
14.6 Enthalpy
14.6.1 Enthalpy of Vaporization
NA77.50 kJ/mol
7.32
799.1
14.6.3 Enthalpy of Fusion
14.6.6 Enthalpy of Atomization
301.00 kJ/mol89.50 kJ/mol
61.5
837
14.7 Standard Molar Entropy
56.50 J/mol.K64.70 J/mol.K
9.5
198.1