Dubnium vs Nihonium
Periodic Table
Symbol
Db
Nh
Group Number
5
13
13
5
Period Number
7
7
Block
d block
p block
Element Family
Transition Metal
Probably Post-Transition
CAS Number
53850354
14
54084707
6
Space Group Name
Not Available
Not Available
Space Group Number
Not Available
194.00
5
Facts
Interesting Facts
- IUPAC allotted a temporary name to Dubnium metal as “ Unnilpentium”.
- In the production of Dubnium, thermal gradient chromatography is used.
Not Available
Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced
Synthetically Produced
History
Who Discovered
Joint Institute for Nuclear Research
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory
Discovery
In 1968
In 2003
Abundance
Uses
Uses & Benefits
- Currently known uses of Dubnium metal are limited to research purpose only.
- Currently known uses of Ununtrium metal are limited to research purpose only.
Industrial Uses
NA
NA
Medical Uses
NA
NA
Other Uses
Research Purposes
Research Purposes
Biological Properties
Present in Human Body
No
No
In Blood
0.00 Blood/mg dm-3
37
Not Available
In Bone
0.00 p.p.m.
36
Not Available
Physical Properties
Melting Point
Not Available
430.00 °C
99+
Boiling Point
Not Available
1,130.00 °C
99+
Appearance
Physical State
Solid
Solid
Luster
Unknown Luster
Unknown Luster
Hardness
Speed of Sound
Not Available
Not Available
Optical Properties
Allotropes
No
No
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Chemical Properties
Chemical Formula
Db
Nh
Isotopes
Known Isotopes
10
28
7
31
Electronegativity
Electropositivity
Ionization Energies
1st Energy Level
664.80 kJ/mol
38
704.90 kJ/mol
34
2nd Energy Level
1,546.70 kJ/mol
38
2,238.50 kJ/mol
7
3rd Energy Level
2,378.40 kJ/mol
99+
3,023.30 kJ/mol
26
4th Energy Level
3,298.80 kJ/mol
99+
4,351.50 kJ/mol
29
5th Energy Level
4,305.20 kJ/mol
39
5,692.60 kJ/mol
28
Electrochemical Equivalent
Not Available
Not Available
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Chemical Stability, Ionization
Atomic Properties
Atomic Number
105
13
113
5
Electron Configuration
[Rn] 5f14 6d3 7s2
[Rn] 5f14 6d10 7s2 7p1
Crystal Structure
Body Centered Cubic (BCC)
Not Known
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
Unknown-Crystal-Structure-of-Ununtrium.jpg#100
Atom
Number of Protons
105
13
113
5
Number of Neutrons
157
7
150
11
Number of Electrons
105
13
113
5
Radius of an Atom
Atomic Radius
139.00 pm
39
Not Available
Covalent Radius
149.00 pm
35
Not Available
Atomic Weight
268.00 amu
10
286.00 amu
4
Atomic Volume
Not Available
Not Available
Adjacent Atomic Numbers
Valence Electron Potential
Not Available
Not Available
Lattice Constant
Not Available
Not Available
Lattice Angles
NA
NA
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
29.30 g/cm3
5
16.00 g/cm3
19
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Elasticity properties
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Unknown
Unknown
Magnetic Properties
Magnetic Characteristics
Electrical Properties
Thermal Properties
Specific Heat
Not Available
Not Available
Molar Heat Capacity
Not Available
Not Available
Thermal Conductivity
Not Available
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Not Available
Enthalpy
Standard Molar Entropy
Not Available
Not Available
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