Dubnium vs Lutetium
Periodic Table
Symbol
Db
Lu
Group Number
5
13
Not Available
Period Number
7
6
Block
d block
f block
Element Family
Transition Metal
Lanthanide
CAS Number
53850354
14
7439943
99+
Space Group Name
Not Available
P63/mmc
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.
- Metal dust of Lutetium element is highly explosive.
- Lutetium metal is corrosion resistance and acts stable in air.
Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced
Found in Minerals, Mining, Ores of Minerals
History
Who Discovered
Joint Institute for Nuclear Research
Georges Urbain and Carl Auer von Welsbach
Discovery
In 1968
In 1906
Abundance
Abundance In Universe
Not Available
1 * 10-8 %
30
Abundance In Sun
~-9999 %
~0.0000001 %
26
Abundance In Meteorites
Not Available
0.00 %
99+
Abundance In Earth's Crust
Not Available
0.00 %
99+
Abundance In Oceans
Not Available
0.00 %
99+
Uses
Uses & Benefits
- Currently known uses of Dubnium metal are limited to research purpose only.
- Lutetium metal is used outside research. It has commercial uses like Industrial catalyst for cracking oil refineries of hydrocarbons .
Industrial Uses
NA
NA
Medical Uses
NA
NA
Other Uses
Research Purposes
Alloys
Biological Properties
Toxicity
Unknown
Low Toxic
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
1,652.00 °C
19
Boiling Point
Not Available
3,402.00 °C
19
Appearance
Physical State
Solid
Solid
Color
Unknown
Silvery White
Luster
Unknown Luster
Metallic
Hardness
Brinell Hardness
Not Available
893.00 MPa
10
Vickers Hardness
Not Available
1,160.00 MPa
8
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
Lu
Isotopes
Known Isotopes
10
28
35
4
Electronegativity
Pauling Electronegativity
Not Available
1.27
34
Allred Rochow Electronegativity
Not Available
1.14
28
Electropositivity
Pauling Electropositivity
Not Available
2.73
20
Ionization Energies
1st Energy Level
664.80 kJ/mol
38
523.50 kJ/mol
99+
2nd Energy Level
1,546.70 kJ/mol
38
1,340.00 kJ/mol
99+
3rd Energy Level
2,378.40 kJ/mol
99+
2,022.30 kJ/mol
99+
4th Energy Level
3,298.80 kJ/mol
99+
4,370.00 kJ/mol
28
5th Energy Level
4,305.20 kJ/mol
39
6,445.00 kJ/mol
21
Electrochemical Equivalent
Not Available
2.18 g/amp-hr
23
Electron Work Function
Not Available
3.30 eV
33
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
Atomic Properties
Atomic Number
105
13
71
99+
Electron Configuration
[Rn] 5f14 6d3 7s2
[Xe] 6s2 4f14 5d1
Crystal Structure
Body Centered Cubic (BCC)
Hexagonal Close Packed (HCP)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
BCC-Crystal-Structure-.jpg#100
Atom
Number of Protons
105
13
71
99+
Number of Neutrons
157
7
104
30
Number of Electrons
105
13
71
99+
Radius of an Atom
Atomic Radius
139.00 pm
39
174.00 pm
20
Covalent Radius
149.00 pm
35
187.00 pm
20
Van der Waals Radius
Not Available
221.00 pm
22
Atomic Weight
268.00 amu
10
174.97 amu
40
Atomic Volume
Not Available
17.78 cm3/mol
30
Adjacent Atomic Numbers
Valence Electron Potential
Not Available
50.90 (-eV)
26
Lattice Constant
Not Available
350.31 pm
99+
Lattice Angles
NA
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
1.59
10
Mechanical Properties
Density
Density At Room Temperature
29.30 g/cm3
5
9.84 g/cm3
38
Density When Liquid (at m.p.)
Not Available
9.30 g/cm3
22
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
0.00 (Pa)
33
Vapor Pressure at 2000 K
Not Available
3.18 (Pa)
11
Elasticity properties
Shear Modulus
Not Available
27.20 GPa
26
Bulk Modulus
Not Available
47.60 GPa
23
Young's Modulus
Not Available
68.60 GPa
30
Poisson Ratio
Not Available
0.26
21
Other Mechanical Properties
Unknown
NA
Magnetic Properties
Magnetic Characteristics
Specific Gravity
Not Available
9.84
29
Magnetic Ordering
Unknown
Paramagnetic
Electrical Properties
Electrical Property
Unknown
Conductor
Resistivity
Not Available
582.00 nΩ·m
9
Electrical Conductivity
Not Available
0.02 106/cm Ω
99+
Electron Affinity
Not Available
50.00 kJ/mol
21
Thermal Properties
Specific Heat
Not Available
0.15 J/(kg K)
36
Molar Heat Capacity
Not Available
26.86 J/mol·K
24
Thermal Conductivity
Not Available
16.40 W/m·K
99+
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
9.90 µm/(m·K)
40
Enthalpy
Enthalpy of Vaporization
Not Available
355.90 kJ/mol
22
Enthalpy of Fusion
Not Available
18.70 kJ/mol
13
Enthalpy of Atomization
Not Available
398.00 kJ/mol
20
Standard Molar Entropy
Not Available
51.00 J/mol.K
30
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