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
74400977440531
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- In the list of most abundant element Potassium is ranked 7th.
- Potassium can easily be sliced (chopped) down using knife.
Not Available
2.2 Sources
Found in Minerals, Mining
Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Humphry Davy
Eugène-Anatole Demarçay
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
3 * 10-4 %5 * 10-8 %
5E-09
0.11
2.4.2 Abundance In Sun
~0.0004 %~0.00000005 %
1E-08
0.1
2.4.3 Abundance In Meteorites
2.4.4 Abundance In Earth's Crust
2.4.5 Abundance In Oceans
2.4.6 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- 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.
- Europium metals main uses is in the printing of euro banknotes. These notes glow red under UV light.
-
It is used in low energy light bulbs.
3.1.1 Industrial Uses
Ammunition Industry, Chemical Industry
Chemical Industry
3.1.2 Medical Uses
Pharmaceutical Industry
NA
3.1.3 Other Uses
3.2 Biological Properties
3.2.1 Toxicity
3.2.2 Present in Human Body
3.2.3 In Blood
1,620.00 Blood/mg dm-3NA
0
1970
3.2.4 In Bone
2,100.00 p.p.m.NA
0
170000
4 Physical
4.1 Melting Point
63.65 °C822.00 °C
27
3410
4.2 Boiling Point
774.00 °C1,597.00 °C
147
5660
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
Silvery Gray
Silvery White
4.3.3 Luster
4.4 Hardness
4.4.1 Mohs Hardness
4.4.2 Brinell Hardness
4.4.3 Vickers Hardness
4.5 Speed of Sound
4.6 Optical Properties
4.6.1 Refractive Index
4.6.2 Reflectivity
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
5.2 Isotopes
5.2.1 Known Isotopes
5.3 Electronegativity
5.3.1 Pauling Electronegativity
5.3.2 Sanderson Electronegativity
5.3.3 Allred Rochow Electronegativity
5.3.4 Mulliken-Jaffe Electronegativity
5.3.5 Allen Electronegativity
5.4 Electropositivity
5.4.1 Pauling Electropositivity
5.5 Ionization Energies
5.5.1 1st Energy Level
418.80 kJ/mol547.10 kJ/mol
375.7
26130
5.5.2 2nd Energy Level
3,052.00 kJ/mol1,085.00 kJ/mol
710.2162
28750
5.5.3 3rd Energy Level
4,420.00 kJ/mol2,404.00 kJ/mol
1600
34230
5.5.4 4th Energy Level
5,877.00 kJ/mol4,120.00 kJ/mol
2780
37066
5.5.5 5th Energy Level
7,975.00 kJ/molNA
4305.2
97510
5.5.6 6th Energy Level
9,590.00 kJ/molNA
5715.8
105800
5.5.7 7th Energy level
11,343.00 kJ/molNA
7226.8
114300
5.5.8 8th Energy Level
14,944.00 kJ/molNA
8857.4
125300
5.5.9 9th Energy Level
16,963.70 kJ/molNA
14110
134700
5.5.10 10th Energy Level
48,610.00 kJ/molNA
17100
144300
5.5.11 11th Energy Level
54,490.00 kJ/molNA
19900
169988
5.5.12 12th Energy Level
60,730.00 kJ/molNA
22219
189368
5.5.13 13th Energy Level
68,950.00 kJ/molNA
26930
76015
5.5.14 14th Energy Level
75,900.00 kJ/molNA
29196
86450
5.5.15 15th Energy Level
83,080.00 kJ/molNA
41987
97510
5.5.16 16th Energy Level
93,400.00 kJ/molNA
47206
109480
5.5.17 17th Energy Level
99,710.00 kJ/molNA
52737
122200
5.5.18 18th Energy Level
5.5.19 19th Energy Level
5.5.20 20th Energy Level
5.5.21 21st Energy Level
5.5.22 22nd Energy Level
5.5.23 23rd Energy Level
5.5.24 24th Energy Level
5.5.25 25th Energy Level
5.5.26 26th Energy Level
5.5.27 27th Energy Level
5.5.28 28th Energy Level
5.5.29 29th Energy Level
5.5.30 30th Energy Level
5.6 Electrochemical Equivalent
1.46 g/amp-hr1.89 g/amp-hr
0.16812
8.3209
5.7 Electron Work Function
5.8 Other Chemical Properties
Chemical Stability, Flammability, Ionization, Solubility
Ionization, Radioactive Isotopes, Solubility
6 Atomic
6.1 Atomic Number
6.2 Electron Configuration
6.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
6.4.2 Number of Neutrons
6.4.3 Number of Electrons
6.5 Radius of an Atom
6.5.1 Atomic Radius
227.00 pm180.00 pm
112
265
6.5.2 Covalent Radius
203.00 pm198.00 pm
96
260
6.5.3 Van der Waals Radius
275.00 pm233.00 pm
139
348
6.6 Atomic Weight
39.10 amu151.96 amu
6.94
294
6.7 Atomic Volume
45.46 cm3/mol28.90 cm3/mol
1.39
71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
10.40 (-eV)45.60 (-eV)
8
392.42
6.10 Lattice Constant
532.80 pm458.10 pm
228.58
891.25
6.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
6.12 Lattice C/A Ratio
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
0.86 g/cm35.26 g/cm3
0.534
40.7
7.1.2 Density When Liquid (at m.p.)
0.83 g/cm35.13 g/cm3
0.512
20
7.2 Tensile Strength
7.3 Viscosity
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
NA19.40 (Pa)
2.47E-11
121
7.4.2 Vapor Pressure at 2000 K
7.5 Elasticity properties
7.5.1 Shear Modulus
7.5.2 Bulk Modulus
7.5.3 Young's Modulus
3.53 GPa18.20 GPa
1.7
528
7.6 Poisson Ratio
7.7 Other Mechanical Properties
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
8.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
8.1.3 Permeability
8.1.4 Susceptibility
8.2 Electrical Properties
8.2.1 Electrical Property
8.2.2 Resistivity
72.00 nΩ·m0.90 nΩ·m
0.18
961
8.2.3 Electrical Conductivity
0.14 106/cm Ω0.01 106/cm Ω
0.00666
0.63
8.2.4 Electron Affinity
48.40 kJ/mol50.00 kJ/mol
0
222.8
9 Thermal
9.1 Specific Heat
0.75 J/(kg K)0.18 J/(kg K)
0.11
3.6
9.2 Molar Heat Capacity
29.60 J/mol·K27.66 J/mol·K
16.443
62.7
9.3 Thermal Conductivity
102.50 W/m·K13.90 W/m·K
6.3
429
9.4 Critical Temperature
9.5 Thermal Expansion
83.30 µm/(m·K)35.00 µm/(m·K)
4.5
97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
77.50 kJ/mol143.50 kJ/mol
7.32
799.1
1.1.1 Enthalpy of Fusion
2.32 kJ/mol9.21 kJ/mol
2.1
35.23
1.1.2 Enthalpy of Atomization
89.50 kJ/mol180.00 kJ/mol
61.5
837
1.3 Standard Molar Entropy
64.70 J/mol.K77.80 J/mol.K
9.5
198.1