1 Periodic Table
1.1 Symbol
1.2 Group Number
1.4 Period Number
1.5 Block
1.6 Element Family
1.7 CAS Number
74403487440735
7429905
54386242
1.9 Space Group Name
1.10 Space Group Number
2 Facts
2.1 Interesting Facts
Not Available
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
2.2 Sources
Obtained by Treating Radium with Neutrons, Ores of metals
Formed by Decay Process, Mining
2.3 History
2.3.1 Who Discovered
Friedrich Oskar Giesel
Marguerite Perey
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
2.6.1 Abundance In Meteorites
2.7.1 Abundance In Earth's Crust
2.9.1 Abundance In Oceans
3.1.2 Abundance In Humans
4 Uses
4.1 Uses & Benefits
- Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
- Francium has no known uses as it has a half life of only 22 minutes.
4.1.1 Industrial Uses
4.1.2 Medical Uses
4.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
NA
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-30.00 Blood/mg dm-3
0
1970
4.2.5 In Bone
0.00 p.p.m.0.00 p.p.m.
0
170000
5 Physical
5.1 Melting Point
1,227.00 °C27.00 °C
27
3410
5.3 Boiling Point
3,200.00 °C677.00 °C
147
5660
5.6 Appearance
5.6.1 Physical State
5.6.2 Color
5.6.3 Luster
5.7 Hardness
5.7.1 Mohs Hardness
5.7.3 Brinell Hardness
5.8.2 Vickers Hardness
5.9 Speed of Sound
5.10 Optical Properties
5.10.1 Refractive Index
5.10.3 Reflectivity
5.11 Allotropes
5.11.1 α Allotropes
Not Available
Not Available
5.11.2 β Allotropes
Not Available
Not Available
5.11.3 γ Allotropes
Not Available
Not Available
6 Chemical
6.1 Chemical Formula
6.2 Isotopes
6.2.1 Known Isotopes
6.4 Electronegativity
6.4.1 Pauling Electronegativity
7.1.2 Sanderson Electronegativity
7.1.5 Allred Rochow Electronegativity
7.1.7 Mulliken-Jaffe Electronegativity
7.2.3 Allen Electronegativity
7.3 Electropositivity
7.3.1 Pauling Electropositivity
7.4 Ionization Energies
7.4.1 1st Energy Level
499.00 kJ/mol380.00 kJ/mol
375.7
26130
7.4.3 2nd Energy Level
1,170.00 kJ/molNA
710.2162
28750
7.4.4 3rd Energy Level
1,900.00 kJ/molNA
1600
34230
8.1.1 4th Energy Level
4,700.00 kJ/molNA
2780
37066
8.2.1 5th Energy Level
8.2.2 6th Energy Level
8.3.1 7th Energy level
8.3.2 8th Energy Level
8.4.1 9th Energy Level
8.5.1 10th Energy Level
8.5.2 11th Energy Level
8.6.2 12th Energy Level
8.6.4 13th Energy Level
8.6.5 14th Energy Level
8.6.7 15th Energy Level
8.6.8 16th Energy Level
8.7.1 17th Energy Level
8.7.2 18th Energy Level
8.7.3 19th Energy Level
8.7.4 20th Energy Level
8.7.5 21st Energy Level
8.7.6 22nd Energy Level
8.7.7 23rd Energy Level
8.7.8 24th Energy Level
8.7.9 25th Energy Level
8.7.10 26th Energy Level
8.7.11 27th Energy Level
8.7.12 28th Energy Level
8.7.13 29th Energy Level
8.7.14 30th Energy Level
8.8 Electrochemical Equivalent
2.82 g/amp-hr8.32 g/amp-hr
0.16812
8.3209
8.9 Electron Work Function
8.10 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes, Radioactivity, Solubility
9 Atomic
9.1 Atomic Number
9.2 Electron Configuration
9.3 Crystal Structure
Face Centered Cubic (FCC)
Body Centered Cubic (BCC)
9.3.1 Crystal Lattice
9.4 Atom
9.4.1 Number of Protons
9.4.2 Number of Neutrons
9.4.3 Number of Electrons
9.5 Radius of an Atom
9.5.1 Atomic Radius
9.5.2 Covalent Radius
9.5.3 Van der Waals Radius
9.6 Atomic Weight
227.00 amu223.00 amu
6.94
294
9.7 Atomic Volume
22.54 cm3/molNA
1.39
71.07
9.8 Adjacent Atomic Numbers
9.8.1 Previous Element
9.8.2 Next Element
9.9 Valence Electron Potential
38.60 (-eV)8.00 (-eV)
8
392.42
9.10 Lattice Constant
567.00 pmNA
228.58
891.25
9.11 Lattice Angles
9.12 Lattice C/A Ratio
10 Mechanical
10.1 Density
10.1.1 Density At Room Temperature
10.00 g/cm31.87 g/cm3
0.534
40.7
10.1.2 Density When Liquid (at m.p.)
10.2 Tensile Strength
10.3 Viscosity
10.4 Vapor Pressure
10.4.1 Vapor Pressure at 1000 K
10.4.2 Vapor Pressure at 2000 K
10.5 Elasticity properties
10.5.1 Shear Modulus
10.5.2 Bulk Modulus
10.5.3 Young's Modulus
10.6 Poisson Ratio
10.7 Other Mechanical Properties
11 Magnetic
11.1 Magnetic Characteristics
11.1.1 Specific Gravity
11.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
11.1.3 Permeability
11.1.4 Susceptibility
11.2 Electrical Properties
11.2.1 Electrical Property
11.2.2 Resistivity
11.2.3 Electrical Conductivity
NA0.03 106/cm Ω
0.00666
0.63
11.2.4 Electron Affinity
12 Thermal
12.1 Specific Heat
12.2 Molar Heat Capacity
27.20 J/mol·KNA
16.443
62.7
12.3 Thermal Conductivity
12.00 W/m·K15.00 W/m·K
6.3
429
12.4 Critical Temperature
12.5 Thermal Expansion
12.6 Enthalpy
12.6.1 Enthalpy of Vaporization
12.6.2 Enthalpy of Fusion
12.6.3 Enthalpy of Atomization
301.00 kJ/mol71.00 kJ/mol
61.5
837
12.7 Standard Molar Entropy
56.50 J/mol.KNA
9.5
198.1