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
74405317440097
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
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Eugène-Anatole Demarçay
Humphry Davy
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
5 * 10-8 %3 * 10-4 %
5E-09
0.11
2.4.2 Abundance In Sun
~0.00000005 %~0.0004 %
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
- 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.
- 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.
3.1.1 Industrial Uses
Chemical Industry
Ammunition Industry, Chemical Industry
3.1.2 Medical Uses
NA
Pharmaceutical Industry
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
NA1,620.00 Blood/mg dm-3
0
1970
3.2.4 In Bone
NA2,100.00 p.p.m.
0
170000
4 Physical
4.1 Melting Point
822.00 °C63.65 °C
27
3410
4.2 Boiling Point
1,597.00 °C774.00 °C
147
5660
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
Silvery White
Silvery Gray
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
547.10 kJ/mol418.80 kJ/mol
375.7
26130
5.5.2 2nd Energy Level
1,085.00 kJ/mol3,052.00 kJ/mol
710.2162
28750
5.5.3 3rd Energy Level
2,404.00 kJ/mol4,420.00 kJ/mol
1600
34230
5.5.4 4th Energy Level
4,120.00 kJ/mol5,877.00 kJ/mol
2780
37066
5.5.5 5th Energy Level
NA7,975.00 kJ/mol
4305.2
97510
5.5.6 6th Energy Level
NA9,590.00 kJ/mol
5715.8
105800
5.5.7 7th Energy level
NA11,343.00 kJ/mol
7226.8
114300
5.5.8 8th Energy Level
NA14,944.00 kJ/mol
8857.4
125300
5.5.9 9th Energy Level
NA16,963.70 kJ/mol
14110
134700
5.5.10 10th Energy Level
NA48,610.00 kJ/mol
17100
144300
5.5.11 11th Energy Level
NA54,490.00 kJ/mol
19900
169988
5.5.12 12th Energy Level
NA60,730.00 kJ/mol
22219
189368
5.5.13 13th Energy Level
NA68,950.00 kJ/mol
26930
76015
5.5.14 14th Energy Level
NA75,900.00 kJ/mol
29196
86450
5.5.15 15th Energy Level
NA83,080.00 kJ/mol
41987
97510
5.5.16 16th Energy Level
NA93,400.00 kJ/mol
47206
109480
5.5.17 17th Energy Level
NA99,710.00 kJ/mol
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
1.89 g/amp-hr1.46 g/amp-hr
0.16812
8.3209
5.7 Electron Work Function
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Chemical Stability, Flammability, Ionization, 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
180.00 pm227.00 pm
112
265
6.5.2 Covalent Radius
198.00 pm203.00 pm
96
260
6.5.3 Van der Waals Radius
233.00 pm275.00 pm
139
348
6.6 Atomic Weight
151.96 amu39.10 amu
6.94
294
6.7 Atomic Volume
28.90 cm3/mol45.46 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
45.60 (-eV)10.40 (-eV)
8
392.42
6.10 Lattice Constant
458.10 pm532.80 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
5.26 g/cm30.86 g/cm3
0.534
40.7
7.1.2 Density When Liquid (at m.p.)
5.13 g/cm30.83 g/cm3
0.512
20
7.2 Tensile Strength
7.3 Viscosity
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
19.40 (Pa)NA
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
18.20 GPa3.53 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
0.90 nΩ·m72.00 nΩ·m
0.18
961
8.2.3 Electrical Conductivity
0.01 106/cm Ω0.14 106/cm Ω
0.00666
0.63
8.2.4 Electron Affinity
50.00 kJ/mol48.40 kJ/mol
0
222.8
9 Thermal
9.1 Specific Heat
0.18 J/(kg K)0.75 J/(kg K)
0.11
3.6
9.2 Molar Heat Capacity
27.66 J/mol·K29.60 J/mol·K
16.443
62.7
9.3 Thermal Conductivity
13.90 W/m·K102.50 W/m·K
6.3
429
9.4 Critical Temperature
9.5 Thermal Expansion
35.00 µm/(m·K)83.30 µm/(m·K)
4.5
97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
143.50 kJ/mol77.50 kJ/mol
7.32
799.1
9.6.2 Enthalpy of Fusion
9.21 kJ/mol2.32 kJ/mol
2.1
35.23
9.6.3 Enthalpy of Atomization
180.00 kJ/mol89.50 kJ/mol
61.5
837
9.7 Standard Molar Entropy
77.80 J/mol.K64.70 J/mol.K
9.5
198.1