1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
Alkali
Probably Post-Transition
1.6 CAS Number
744073554084707
7429905
54386242
1.7 Space Group Name
Not Available
Not Available
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.
Not Available
2.2 Sources
Formed by Decay Process, Mining
Synthetically Produced
2.3 History
2.3.1 Who Discovered
Marguerite Perey
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.5.1 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
2.8.1 Abundance In Meteorites
2.10.1 Abundance In Earth's Crust
3.4.2 Abundance In Oceans
3.4.4 Abundance In Humans
4 Uses
4.1 Uses & Benefits
- Francium has no known uses as it has a half life of only 22 minutes.
- Currently known uses of Ununtrium metal are limited to research purpose only.
4.1.1 Industrial Uses
4.1.2 Medical Uses
4.1.3 Other Uses
4.2 Biological Properties
4.2.1 Toxicity
4.2.2 Present in Human Body
4.2.3 In Blood
0.00 Blood/mg dm-3NA
0
1970
4.2.4 In Bone
5 Physical
5.1 Melting Point
27.00 °C430.00 °C
27
3410
5.2 Boiling Point
677.00 °C1,130.00 °C
147
5660
6.3 Appearance
6.3.1 Physical State
6.3.3 Color
6.3.4 Luster
6.4 Hardness
6.4.1 Mohs Hardness
6.4.3 Brinell Hardness
7.1.1 Vickers Hardness
7.3 Speed of Sound
7.6 Optical Properties
7.6.1 Refractive Index
7.6.2 Reflectivity
7.7 Allotropes
7.7.1 α Allotropes
Not Available
Not Available
7.7.2 β Allotropes
Not Available
Not Available
7.7.3 γ Allotropes
Not Available
Not Available
8 Chemical
8.1 Chemical Formula
8.2 Isotopes
8.2.1 Known Isotopes
8.3 Electronegativity
8.3.1 Pauling Electronegativity
8.3.3 Sanderson Electronegativity
8.4.1 Allred Rochow Electronegativity
8.4.2 Mulliken-Jaffe Electronegativity
8.5.3 Allen Electronegativity
9.3 Electropositivity
9.3.1 Pauling Electropositivity
9.5 Ionization Energies
9.5.1 1st Energy Level
380.00 kJ/mol704.90 kJ/mol
375.7
26130
9.5.2 2nd Energy Level
NA2,238.50 kJ/mol
710.2162
28750
9.5.4 3rd Energy Level
NA3,023.30 kJ/mol
1600
34230
9.5.6 4th Energy Level
NA4,351.50 kJ/mol
2780
37066
9.5.8 5th Energy Level
NA5,692.60 kJ/mol
4305.2
97510
9.5.10 6th Energy Level
9.5.11 7th Energy level
9.6.2 8th Energy Level
9.7.2 9th Energy Level
9.7.4 10th Energy Level
9.7.6 11th Energy Level
9.7.8 12th Energy Level
9.7.10 13th Energy Level
9.7.12 14th Energy Level
9.7.15 15th Energy Level
9.7.17 16th Energy Level
9.7.19 17th Energy Level
9.7.21 18th Energy Level
9.7.22 19th Energy Level
9.7.24 20th Energy Level
9.7.26 21st Energy Level
9.7.27 22nd Energy Level
9.7.29 23rd Energy Level
9.7.30 24th Energy Level
9.7.32 25th Energy Level
9.7.33 26th Energy Level
9.7.35 27th Energy Level
9.7.37 28th Energy Level
9.7.38 29th Energy Level
9.7.40 30th Energy Level
9.8 Electrochemical Equivalent
8.32 g/amp-hrNA
0.16812
8.3209
9.9 Electron Work Function
9.10 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Ionization
10 Atomic
10.1 Atomic Number
10.2 Electron Configuration
[Rn] 7s1
[Rn] 5f14 6d10 7s2 7p1
10.3 Crystal Structure
Body Centered Cubic (BCC)
Not Known
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
10.4.4 Number of Neutrons
10.4.7 Number of Electrons
10.6 Radius of an Atom
10.6.1 Atomic Radius
10.7.1 Covalent Radius
10.7.2 Van der Waals Radius
11.2 Atomic Weight
223.00 amu286.00 amu
6.94
294
11.6 Atomic Volume
11.7 Adjacent Atomic Numbers
11.7.1 Previous Element
11.7.2 Next Element
11.8 Valence Electron Potential
11.9 Lattice Constant
11.10 Lattice Angles
11.11 Lattice C/A Ratio
12 Mechanical
12.1 Density
12.1.1 Density At Room Temperature
1.87 g/cm316.00 g/cm3
0.534
40.7
12.2.3 Density When Liquid (at m.p.)
12.4 Tensile Strength
12.5 Viscosity
12.7 Vapor Pressure
12.7.1 Vapor Pressure at 1000 K
12.7.2 Vapor Pressure at 2000 K
12.10 Elasticity properties
12.10.1 Shear Modulus
12.11.1 Bulk Modulus
13.1.2 Young's Modulus
13.2 Poisson Ratio
13.4 Other Mechanical Properties
14 Magnetic
14.1 Magnetic Characteristics
14.1.1 Specific Gravity
14.2.1 Magnetic Ordering
14.2.2 Permeability
14.3.2 Susceptibility
14.4 Electrical Properties
14.4.1 Electrical Property
14.4.2 Resistivity
14.5.2 Electrical Conductivity
0.03 106/cm ΩNA
0.00666
0.63
14.5.4 Electron Affinity
15 Thermal
15.1 Specific Heat
15.3 Molar Heat Capacity
16.2 Thermal Conductivity
16.3 Critical Temperature
16.5 Thermal Expansion
16.6 Enthalpy
16.6.1 Enthalpy of Vaporization
16.6.3 Enthalpy of Fusion
17.1.1 Enthalpy of Atomization
17.3 Standard Molar Entropy