1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.5 Block
1.6 Element Family
1.7 CAS Number
74407357440144
7429905
54386242
1.11 Space Group Name
1.12 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.
- Radium metal is the heaviest metal of Alkaline earth metals column.
- Radium metal is highly radioactive and does not have any stable isotopes.
2.2 Sources
Formed by Decay Process, Mining
Mining, Ores of metals
2.3 History
2.3.1 Who Discovered
Marguerite Perey
Not Available
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.4.2 Abundance In Sun
~-9999 %~-9999 %
1E-08
0.1
3.4.2 Abundance In Meteorites
3.4.4 Abundance In Earth's Crust
3.4.6 Abundance In Oceans
3.4.7 Abundance In Humans
4 Uses
4.1 Uses & Benefits
- Francium has no known uses as it has a half life of only 22 minutes.
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
-
It is used in luminous paints.
4.1.1 Industrial Uses
4.1.2 Medical Uses
NA
Pharmaceutical Industry
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 °C700.00 °C
27
3410
5.2 Boiling Point
677.00 °C1,737.00 °C
147
5660
5.3 Appearance
5.3.1 Physical State
5.3.2 Color
5.3.3 Luster
5.4 Hardness
5.4.1 Mohs Hardness
5.4.2 Brinell Hardness
6.2.4 Vickers Hardness
6.3 Speed of Sound
6.4 Optical Properties
6.4.1 Refractive Index
6.4.2 Reflectivity
6.5 Allotropes
6.5.1 α Allotropes
Not Available
Not Available
6.5.2 β Allotropes
Not Available
Not Available
6.5.3 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
8.3.2 Sanderson Electronegativity
8.4.1 Allred Rochow Electronegativity
8.6.2 Mulliken-Jaffe Electronegativity
8.6.3 Allen Electronegativity
8.7 Electropositivity
8.7.1 Pauling Electropositivity
8.8 Ionization Energies
8.8.1 1st Energy Level
380.00 kJ/mol509.30 kJ/mol
375.7
26130
8.8.2 2nd Energy Level
NA979.00 kJ/mol
710.2162
28750
8.9.1 3rd Energy Level
8.10.2 4th Energy Level
8.10.4 5th Energy Level
9.2.2 6th Energy Level
9.2.3 7th Energy level
9.3.2 8th Energy Level
9.3.4 9th Energy Level
9.3.5 10th Energy Level
9.3.7 11th Energy Level
9.3.9 12th Energy Level
9.3.11 13th Energy Level
9.3.12 14th Energy Level
9.5.2 15th Energy Level
9.5.3 16th Energy Level
9.5.5 17th Energy Level
9.5.7 18th Energy Level
9.5.9 19th Energy Level
9.5.11 20th Energy Level
9.5.12 21st Energy Level
9.5.14 22nd Energy Level
9.5.16 23rd Energy Level
9.5.18 24th Energy Level
9.5.19 25th Energy Level
9.5.21 26th Energy Level
9.5.23 27th Energy Level
9.5.24 28th Energy Level
9.5.26 29th Energy Level
9.5.27 30th Energy Level
9.6 Electrochemical Equivalent
8.32 g/amp-hr4.22 g/amp-hr
0.16812
8.3209
9.7 Electron Work Function
9.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes, Radioactivity
10 Atomic
10.1 Atomic Number
10.2 Electron Configuration
10.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
10.3.1 Crystal Lattice
10.4 Atom
10.4.1 Number of Protons
10.4.3 Number of Neutrons
10.4.6 Number of Electrons
10.5 Radius of an Atom
10.5.1 Atomic Radius
10.5.3 Covalent Radius
260.00 pm221.00 pm
96
260
10.5.5 Van der Waals Radius
348.00 pm283.00 pm
139
348
10.6 Atomic Weight
223.00 amu226.00 amu
6.94
294
10.7 Atomic Volume
NA45.20 cm3/mol
1.39
71.07
10.8 Adjacent Atomic Numbers
10.8.1 Previous Element
10.8.2 Next Element
10.9 Valence Electron Potential
8.00 (-eV)20.10 (-eV)
8
392.42
10.10 Lattice Constant
NA514.80 pm
228.58
891.25
10.11 Lattice Angles
10.12 Lattice C/A Ratio
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
1.87 g/cm35.50 g/cm3
0.534
40.7
11.1.4 Density When Liquid (at m.p.)
11.3 Tensile Strength
11.4 Viscosity
11.6 Vapor Pressure
11.6.1 Vapor Pressure at 1000 K
12.1.1 Vapor Pressure at 2000 K
12.2 Elasticity properties
12.2.1 Shear Modulus
12.5.2 Bulk Modulus
12.5.4 Young's Modulus
12.6 Poisson Ratio
12.8 Other Mechanical Properties
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
13.1.3 Magnetic Ordering
13.1.4 Permeability
13.1.6 Susceptibility
13.3 Electrical Properties
13.3.1 Electrical Property
13.3.2 Resistivity
3.00 nΩ·m100.00 nΩ·m
0.18
961
13.3.3 Electrical Conductivity
0.03 106/cm ΩNA
0.00666
0.63
13.4.1 Electron Affinity
14 Thermal
14.1 Specific Heat
14.3 Molar Heat Capacity
14.6 Thermal Conductivity
15.00 W/m·K18.60 W/m·K
6.3
429
15.2 Critical Temperature
15.3 Thermal Expansion
15.5 Enthalpy
15.5.1 Enthalpy of Vaporization
15.6.1 Enthalpy of Fusion
15.7.2 Enthalpy of Atomization
71.00 kJ/mol163.00 kJ/mol
61.5
837
15.9 Standard Molar Entropy
NA71.00 J/mol.K
9.5
198.1