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
74407357440097
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
- In the list of most abundant element Potassium is ranked 7th.
- Potassium can easily be sliced (chopped) down using knife.
2.2 Sources
Formed by Decay Process, Mining
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Marguerite Perey
Humphry Davy
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.4.4 Abundance In Sun
~-9999 %~0.0004 %
1E-08
0.1
2.4.6 Abundance In Meteorites
2.4.8 Abundance In Earth's Crust
2.4.11 Abundance In Oceans
2.5.1 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- Francium has no known uses as it has a half life of only 22 minutes.
- 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
NA
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
3.3.1 Present in Human Body
3.3.2 In Blood
0.00 Blood/mg dm-31,620.00 Blood/mg dm-3
0
1970
3.3.3 In Bone
0.00 p.p.m.2,100.00 p.p.m.
0
170000
2 Physical
2.1 Melting Point
2.6 Boiling Point
677.00 °C774.00 °C
147
5660
2.9 Appearance
2.9.1 Physical State
2.9.2 Color
2.10.1 Luster
2.11 Hardness
2.11.1 Mohs Hardness
2.12.1 Brinell Hardness
2.13.1 Vickers Hardness
3.6 Speed of Sound
3.7 Optical Properties
3.7.1 Refractive Index
3.7.3 Reflectivity
3.8 Allotropes
3.8.1 α Allotropes
Not Available
Not Available
3.8.2 β Allotropes
Not Available
Not Available
3.8.3 γ Allotropes
Not Available
Not Available
4 Chemical
4.1 Chemical Formula
4.2 Isotopes
4.2.1 Known Isotopes
4.4 Electronegativity
4.4.1 Pauling Electronegativity
4.4.2 Sanderson Electronegativity
4.5.1 Allred Rochow Electronegativity
4.5.3 Mulliken-Jaffe Electronegativity
5.1.3 Allen Electronegativity
5.3 Electropositivity
5.3.1 Pauling Electropositivity
5.5 Ionization Energies
5.5.1 1st Energy Level
380.00 kJ/mol418.80 kJ/mol
375.7
26130
6.1.1 2nd Energy Level
NA3,052.00 kJ/mol
710.2162
28750
6.1.2 3rd Energy Level
NA4,420.00 kJ/mol
1600
34230
6.4.1 4th Energy Level
NA5,877.00 kJ/mol
2780
37066
7.1.2 5th Energy Level
NA7,975.00 kJ/mol
4305.2
97510
7.3.2 6th Energy Level
NA9,590.00 kJ/mol
5715.8
105800
7.3.4 7th Energy level
NA11,343.00 kJ/mol
7226.8
114300
7.3.5 8th Energy Level
NA14,944.00 kJ/mol
8857.4
125300
7.4.1 9th Energy Level
NA16,963.70 kJ/mol
14110
134700
7.4.2 10th Energy Level
NA48,610.00 kJ/mol
17100
144300
7.5.1 11th Energy Level
NA54,490.00 kJ/mol
19900
169988
7.6.2 12th Energy Level
NA60,730.00 kJ/mol
22219
189368
7.6.3 13th Energy Level
NA68,950.00 kJ/mol
26930
76015
7.7.2 14th Energy Level
NA75,900.00 kJ/mol
29196
86450
7.8.2 15th Energy Level
NA83,080.00 kJ/mol
41987
97510
7.9.3 16th Energy Level
NA93,400.00 kJ/mol
47206
109480
8.1.1 17th Energy Level
NA99,710.00 kJ/mol
52737
122200
8.3.1 18th Energy Level
9.2.4 19th Energy Level
9.2.6 20th Energy Level
9.3.4 21st Energy Level
9.3.7 22nd Energy Level
9.3.10 23rd Energy Level
10.1.2 24th Energy Level
10.2.1 25th Energy Level
10.4.1 26th Energy Level
10.6.1 27th Energy Level
10.7.2 28th Energy Level
10.7.3 29th Energy Level
10.8.3 30th Energy Level
10.9 Electrochemical Equivalent
8.32 g/amp-hr1.46 g/amp-hr
0.16812
8.3209
10.10 Electron Work Function
10.12 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Flammability, Ionization, Solubility
11 Atomic
11.1 Atomic Number
11.2 Electron Configuration
11.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
11.3.1 Crystal Lattice
11.4 Atom
11.4.1 Number of Protons
11.4.3 Number of Neutrons
11.4.5 Number of Electrons
11.5 Radius of an Atom
11.5.1 Atomic Radius
11.5.3 Covalent Radius
260.00 pm203.00 pm
96
260
11.5.5 Van der Waals Radius
348.00 pm275.00 pm
139
348
11.6 Atomic Weight
223.00 amu39.10 amu
6.94
294
11.7 Atomic Volume
NA45.46 cm3/mol
1.39
71.07
11.8 Adjacent Atomic Numbers
11.8.1 Previous Element
11.8.2 Next Element
11.9 Valence Electron Potential
8.00 (-eV)10.40 (-eV)
8
392.42
11.10 Lattice Constant
NA532.80 pm
228.58
891.25
11.11 Lattice Angles
11.12 Lattice C/A Ratio
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
1.87 g/cm30.86 g/cm3
0.534
40.7
12.1.3 Density When Liquid (at m.p.)
12.2 Tensile Strength
12.3 Viscosity
12.4 Vapor Pressure
12.4.1 Vapor Pressure at 1000 K
12.4.2 Vapor Pressure at 2000 K
12.5 Elasticity properties
12.5.1 Shear Modulus
12.5.3 Bulk Modulus
1.2.1 Young's Modulus
1.3 Poisson Ratio
1.6 Other Mechanical Properties
2 Magnetic
2.1 Magnetic Characteristics
2.1.1 Specific Gravity
2.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
2.1.3 Permeability
2.5.1 Susceptibility
2.6 Electrical Properties
2.6.1 Electrical Property
2.6.2 Resistivity
3.00 nΩ·m72.00 nΩ·m
0.18
961
3.1.1 Electrical Conductivity
0.03 106/cm Ω0.14 106/cm Ω
0.00666
0.63
4.7.2 Electron Affinity
5 Thermal
5.1 Specific Heat
5.2 Molar Heat Capacity
NA29.60 J/mol·K
16.443
62.7
5.3 Thermal Conductivity
15.00 W/m·K102.50 W/m·K
6.3
429
5.4 Critical Temperature
5.6 Thermal Expansion
5.7 Enthalpy
5.7.1 Enthalpy of Vaporization
NA77.50 kJ/mol
7.32
799.1
5.7.4 Enthalpy of Fusion
6.2.4 Enthalpy of Atomization
71.00 kJ/mol89.50 kJ/mol
61.5
837
6.4 Standard Molar Entropy
NA64.70 J/mol.K
9.5
198.1