1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.7 Block
1.8 Element Family
Transition Metal
Transition Metal
1.9 CAS Number
5385035454037148
7429905
54386242
1.10 Space Group Name
Not Available
Not Available
1.11 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.
- Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
2.2 Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced
Found in Minerals, Mining, Synthetically Produced
2.3 History
2.3.1 Who Discovered
Joint Institute for Nuclear Research
Gesellschaft für Schwerionenforschung
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
3.1.1 Abundance In Meteorites
3.4.2 Abundance In Earth's Crust
3.4.3 Abundance In Oceans
3.4.5 Abundance In Humans
4 Uses
4.1 Uses & Benefits
- Currently known uses of Dubnium metal are limited to research purpose only.
- Currently known uses of Bohrium metal are limited to research purpose only.
4.1.1 Industrial Uses
4.1.2 Medical Uses
4.1.3 Other Uses
Research Purposes
Research Purposes
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
5.2 Boiling Point
5.3 Appearance
5.3.1 Physical State
5.3.2 Color
5.3.3 Luster
Unknown Luster
Unknown Luster
5.4 Hardness
5.4.1 Mohs Hardness
5.4.3 Brinell Hardness
5.4.4 Vickers Hardness
5.5 Speed of Sound
5.6 Optical Properties
5.6.1 Refractive Index
5.6.2 Reflectivity
6.3 Allotropes
6.3.1 α Allotropes
Not Available
Not Available
6.3.2 β Allotropes
Not Available
Not Available
6.3.3 γ Allotropes
Not Available
Not Available
7 Chemical
7.1 Chemical Formula
7.2 Isotopes
7.2.1 Known Isotopes
8.2 Electronegativity
8.2.1 Pauling Electronegativity
8.3.1 Sanderson Electronegativity
8.5.3 Allred Rochow Electronegativity
8.5.5 Mulliken-Jaffe Electronegativity
8.6.1 Allen Electronegativity
8.8 Electropositivity
8.8.1 Pauling Electropositivity
8.9 Ionization Energies
8.9.1 1st Energy Level
664.80 kJ/mol742.90 kJ/mol
375.7
26130
9.2.2 2nd Energy Level
1,546.70 kJ/mol1,688.50 kJ/mol
710.2162
28750
9.2.3 3rd Energy Level
2,378.40 kJ/mol2,566.50 kJ/mol
1600
34230
9.3.2 4th Energy Level
3,298.80 kJ/mol3,598.90 kJ/mol
2780
37066
9.3.4 5th Energy Level
4,305.20 kJ/mol4,727.80 kJ/mol
4305.2
97510
9.3.6 6th Energy Level
NA5,991.70 kJ/mol
5715.8
105800
9.3.7 7th Energy level
NA7,226.80 kJ/mol
7226.8
114300
9.3.9 8th Energy Level
9.3.11 9th Energy Level
9.3.12 10th Energy Level
9.4.2 11th Energy Level
9.5.2 12th Energy Level
9.5.4 13th Energy Level
9.5.6 14th Energy Level
9.5.8 15th Energy Level
9.5.10 16th Energy Level
9.5.11 17th Energy Level
9.5.13 18th Energy Level
9.5.15 19th Energy Level
9.5.17 20th Energy Level
9.5.19 21st Energy Level
9.5.21 22nd Energy Level
9.5.22 23rd Energy Level
9.5.24 24th Energy Level
9.5.25 25th Energy Level
9.5.27 26th Energy Level
9.5.28 27th Energy Level
9.5.30 28th Energy Level
9.5.31 29th Energy Level
9.5.33 30th Energy Level
9.6 Electrochemical Equivalent
9.7 Electron Work Function
9.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes
10 Atomic
10.1 Atomic Number
10.2 Electron Configuration
[Rn] 5f14 6d3 7s2
[Rn] 5f14 6d5 7s2
10.3 Crystal Structure
Body Centered Cubic (BCC)
Hexagonal Close Packed (HCP)
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
139.00 pm128.00 pm
112
265
10.5.3 Covalent Radius
149.00 pm141.00 pm
96
260
10.5.5 Van der Waals Radius
10.6 Atomic Weight
268.00 amu270.00 amu
6.94
294
10.7 Atomic Volume
10.8 Adjacent Atomic Numbers
10.8.1 Previous Element
10.8.2 Next Element
10.9 Valence Electron Potential
10.10 Lattice Constant
10.12 Lattice Angles
10.13 Lattice C/A Ratio
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
29.30 g/cm337.10 g/cm3
0.534
40.7
11.2.1 Density When Liquid (at m.p.)
12.2 Tensile Strength
12.6 Viscosity
12.7 Vapor Pressure
12.7.1 Vapor Pressure at 1000 K
12.7.3 Vapor Pressure at 2000 K
12.8 Elasticity properties
12.8.1 Shear Modulus
12.9.2 Bulk Modulus
12.9.4 Young's Modulus
12.10 Poisson Ratio
12.12 Other Mechanical Properties
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
13.2.1 Magnetic Ordering
13.2.2 Permeability
13.2.3 Susceptibility
13.5 Electrical Properties
13.5.1 Electrical Property
13.5.2 Resistivity
13.6.1 Electrical Conductivity
13.8.1 Electron Affinity
15 Thermal
15.1 Specific Heat
15.2 Molar Heat Capacity
15.3 Thermal Conductivity
15.6 Critical Temperature
15.8 Thermal Expansion
15.9 Enthalpy
15.9.1 Enthalpy of Vaporization
15.10.2 Enthalpy of Fusion
15.10.4 Enthalpy of Atomization
15.11 Standard Molar Entropy