Dubnium vs Mercury
Periodic Table
Symbol
Db
Hg
Group Number
5
13
12
6
Period Number
7
6
Block
d block
d block
Element Family
Transition Metal
Transition Metal
CAS Number
53850354
14
7439976
99+
Space Group Name
Not Available
R_ 3m
Space Group Number
Not Available
166.00
6
Facts
Interesting Facts
- IUPAC allotted a temporary name to Dubnium metal as “ Unnilpentium”.
- In the production of Dubnium, thermal gradient chromatography is used.
- At room temperature mercury is found in a liquid state.
- A coin of pound or rupees floats in mercury.
- Because of its low melting point and boiling point it is used in thermometers.
Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced
Mining, Ores of Minerals
History
Who Discovered
Joint Institute for Nuclear Research
Ancient Chinese and Indians
Discovery
In 1968
Before 2000 BCE
Abundance
Abundance In Earth's Crust
Not Available
0.05 %
9
Uses
Uses & Benefits
- Currently known uses of Dubnium metal are limited to research purpose only.
- It is a liquid metal at room temperature, but it is a toxic heavy metal and hence many uses of mercury are under review or phased out.
- It is manly used as a catalysts in chemical industry.
Industrial Uses
NA
Electrical Industry, Electronic Industry
Medical Uses
NA
Dentistry
Other Uses
Research Purposes
Alloys, Mirror Manufacturing, Pharmaceutical Industry
Biological Properties
Toxicity
Unknown
Highly Toxic
Present in Human Body
No
Yes
In Blood
0.00 Blood/mg dm-3
37
0.01 Blood/mg dm-3
23
In Bone
0.00 p.p.m.
36
0.45 p.p.m.
19
Physical Properties
Melting Point
Not Available
Not Available
Boiling Point
Not Available
356.58 °C
99+
Appearance
Physical State
Solid
Liquid
Color
Unknown
Silver
Luster
Unknown Luster
NA
Hardness
Speed of Sound
Not Available
1,451.40 m/s
99+
Optical Properties
Refractive Index
Not Available
1.00
3
Reflectivity
Not Available
73.00 %
8
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
Hg
Isotopes
Known Isotopes
10
28
34
5
Electronegativity
Pauling Electronegativity
Not Available
2.00
7
Sanderson Electronegativity
Not Available
2.20
7
Allred Rochow Electronegativity
Not Available
1.44
17
Mulliken-Jaffe Electronegativity
Not Available
1.81
9
Allen Electronegativity
Not Available
1.44
30
Electropositivity
Pauling Electropositivity
Not Available
2.00
99+
Ionization Energies
1st Energy Level
664.80 kJ/mol
38
1,007.10 kJ/mol
4
2nd Energy Level
1,546.70 kJ/mol
38
1,810.00 kJ/mol
20
3rd Energy Level
2,378.40 kJ/mol
99+
3,300.00 kJ/mol
20
4th Energy Level
3,298.80 kJ/mol
99+
Not Available
5th Energy Level
4,305.20 kJ/mol
39
Not Available
Electrochemical Equivalent
Not Available
3.74 g/amp-hr
10
Electron Work Function
Not Available
4.49 eV
15
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Flammability, Ionization, Solubility
Atomic Properties
Atomic Number
105
13
80
36
Electron Configuration
[Rn] 5f14 6d3 7s2
[Xe] 4f14 5d10 6s2
Crystal Structure
Body Centered Cubic (BCC)
Rhombohedral (RHO)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
RHO-Crystal-Structure-of-Mercury.jpg#100
Atom
Number of Protons
105
13
80
36
Number of Neutrons
157
7
121
22
Number of Electrons
105
13
80
36
Radius of an Atom
Atomic Radius
139.00 pm
39
151.00 pm
32
Covalent Radius
149.00 pm
35
132.00 pm
99+
Van der Waals Radius
Not Available
155.00 pm
99+
Atomic Weight
268.00 amu
10
200.59 amu
32
Atomic Volume
Not Available
14.82 cm3/mol
35
Adjacent Atomic Numbers
Valence Electron Potential
Not Available
28.20 (-eV)
99+
Lattice Constant
Not Available
300.50 pm
99+
Lattice Angles
NA
NA
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
29.30 g/cm3
5
13.53 g/cm3
24
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
0.00
1
Vapor Pressure
Elasticity properties
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Unknown
NA
Magnetic Properties
Magnetic Characteristics
Specific Gravity
Not Available
13.53
16
Magnetic Ordering
Unknown
Diamagnetic
Electrical Properties
Electrical Property
Unknown
Conductor
Resistivity
Not Available
961.00 nΩ·m
1
Electrical Conductivity
Not Available
0.01 106/cm Ω
99+
Electron Affinity
Not Available
0.00 kJ/mol
40
Thermal Properties
Specific Heat
Not Available
0.14 J/(kg K)
38
Molar Heat Capacity
Not Available
27.98 J/mol·K
13
Thermal Conductivity
Not Available
8.30 W/m·K
99+
Critical Temperature
Not Available
1,750.00 K
6
Thermal Expansion
Not Available
60.40 µm/(m·K)
5
Enthalpy
Enthalpy of Vaporization
Not Available
56.90 kJ/mol
99+
Enthalpy of Fusion
Not Available
2.29 kJ/mol
99+
Enthalpy of Atomization
Not Available
61.50 kJ/mol
99+
Standard Molar Entropy
Not Available
75.80 J/mol.K
6
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