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
538503547440735
7429905
54386242
1.7 Space Group Name
Not Available
Not Available
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- IUPAC allotted a temporary name to Dubnium metal as “ Unnilpentium”.
- In the production of Dubnium, thermal gradient chromatography is used.
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
2.2 Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced
Formed by Decay Process, Mining
2.3 History
2.3.1 Who Discovered
Joint Institute for Nuclear Research
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
2.4.3 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
- Currently known uses of Dubnium metal are limited to research purpose only.
- Francium has no known uses as it has a half life of only 22 minutes.
3.1.1 Industrial Uses
3.1.2 Medical Uses
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
0.00 Blood/mg dm-30.00 Blood/mg dm-3
0
1970
3.2.4 In Bone
0.00 p.p.m.0.00 p.p.m.
0
170000
4 Physical
4.1 Melting Point
4.2 Boiling Point
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
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
664.80 kJ/mol380.00 kJ/mol
375.7
26130
5.5.2 2nd Energy Level
1,546.70 kJ/molNA
710.2162
28750
5.5.3 3rd Energy Level
2,378.40 kJ/molNA
1600
34230
5.5.4 4th Energy Level
3,298.80 kJ/molNA
2780
37066
5.5.5 5th Energy Level
4,305.20 kJ/molNA
4305.2
97510
5.5.6 6th Energy Level
5.5.7 7th Energy level
5.5.8 8th Energy Level
5.5.9 9th Energy Level
5.5.10 10th Energy Level
5.5.11 11th Energy Level
5.5.12 12th Energy Level
5.5.13 13th Energy Level
5.5.14 14th Energy Level
5.5.15 15th Energy Level
5.5.16 16th Energy Level
5.5.17 17th Energy Level
1.2.4 18th Energy Level
1.2.6 19th Energy Level
1.2.7 20th Energy Level
1.2.8 21st Energy Level
1.2.9 22nd Energy Level
1.2.10 23rd Energy Level
1.2.11 24th Energy Level
1.2.12 25th Energy Level
1.2.13 26th Energy Level
1.2.14 27th Energy Level
1.2.15 28th Energy Level
1.2.16 29th Energy Level
1.2.17 30th Energy Level
1.3 Electrochemical Equivalent
NA8.32 g/amp-hr
0.16812
8.3209
1.4 Electron Work Function
1.5 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Radioactivity, Solubility
2 Atomic
2.1 Atomic Number
2.2 Electron Configuration
[Rn] 5f14 6d3 7s2
[Rn] 7s1
2.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
2.3.1 Crystal Lattice
2.4 Atom
2.4.1 Number of Protons
2.4.2 Number of Neutrons
2.4.3 Number of Electrons
2.5 Radius of an Atom
2.5.1 Atomic Radius
2.5.2 Covalent Radius
149.00 pm260.00 pm
96
260
2.5.3 Van der Waals Radius
2.6 Atomic Weight
268.00 amu223.00 amu
6.94
294
2.7 Atomic Volume
2.8 Adjacent Atomic Numbers
2.8.1 Previous Element
2.8.2 Next Element
2.9 Valence Electron Potential
2.10 Lattice Constant
2.11 Lattice Angles
2.12 Lattice C/A Ratio
3 Mechanical
3.1 Density
3.1.1 Density At Room Temperature
29.30 g/cm31.87 g/cm3
0.534
40.7
3.1.2 Density When Liquid (at m.p.)
3.2 Tensile Strength
3.3 Viscosity
3.4 Vapor Pressure
3.4.1 Vapor Pressure at 1000 K
3.4.2 Vapor Pressure at 2000 K
3.5 Elasticity properties
3.5.1 Shear Modulus
3.5.2 Bulk Modulus
3.5.3 Young's Modulus
3.6 Poisson Ratio
3.7 Other Mechanical Properties
4 Magnetic
4.1 Magnetic Characteristics
4.1.1 Specific Gravity
4.1.2 Magnetic Ordering
4.1.3 Permeability
4.1.4 Susceptibility
4.2 Electrical Properties
4.2.1 Electrical Property
4.2.2 Resistivity
4.2.3 Electrical Conductivity
NA0.03 106/cm Ω
0.00666
0.63
4.2.4 Electron Affinity
5 Thermal
5.1 Specific Heat
5.2 Molar Heat Capacity
5.3 Thermal Conductivity
5.4 Critical Temperature
5.5 Thermal Expansion
5.6 Enthalpy
5.6.1 Enthalpy of Vaporization
5.6.2 Enthalpy of Fusion
5.6.3 Enthalpy of Atomization
5.7 Standard Molar Entropy