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Dubnium Thulium Comparison


Thulium Dubnium comparison


Periodic Table

Symbol
Db   
Tm   

Group Number
5   
13
Not Available   

Period Number
7   
6   

Block
d block   
f block   

Element Family
Transition Metal   
Lanthanide   

CAS Number
53850354   
14
7440304   
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.
  
  • Thulium metal can resist corrosion due to dry air .
  • Only Tm-169 isotope of Thulium metal occur naturally.
  

Sources
Produced by Bombarding Am243 with Ne22, Synthetically Produced   
Found in Minerals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Joint Institute for Nuclear Research   
Per Teodor Cleve   

Discovery
In 1968   
In 1879   

Abundance
  
  

Abundance In Universe
Not Available   
1 * 10-8 %   
30

Abundance In Sun
~-9999 %   
~0.00000002 %   
28

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.
  
  • Thulium metal produces isotopes that emits X-rays. This isotope is used in X-ray machine.
  • Thulium element is also used in Surgical equipment like laser.
  

Industrial Uses
NA   
NA   

Medical Uses
NA   
NA   

Other Uses
Research Purposes   
Alloys, Nuclear Research, 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   
1,545.00 °C   
23

Boiling Point
Not Available   
1,730.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Unknown   
Silvery Gray   

Luster
Unknown Luster   
Metallic   

Hardness
  
  

Brinell Hardness
Not Available   
471.00 MPa   
25

Vickers Hardness
Not Available   
520.00 MPa   
21

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   
Tm   

Isotopes
  
  

Known Isotopes
10   
28
32   
7

Electronegativity
  
  

Pauling Electronegativity
Not Available   
1.25   
35

Allred Rochow Electronegativity
Not Available   
1.11   
29

Electropositivity
  
  

Pauling Electropositivity
Not Available   
2.75   
19

Ionization Energies
  
  

1st Energy Level
664.80 kJ/mol   
38
596.70 kJ/mol   
99+

2nd Energy Level
1,546.70 kJ/mol   
38
1,160.00 kJ/mol   
99+

3rd Energy Level
2,378.40 kJ/mol   
99+
2,285.00 kJ/mol   
99+

4th Energy Level
3,298.80 kJ/mol   
99+
4,120.00 kJ/mol   
33

5th Energy Level
4,305.20 kJ/mol   
39
Not Available   

Electrochemical Equivalent
Not Available   
2.10 g/amp-hr   
26

Electron Work Function
Not Available   
Not Available   

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Solubility   

Atomic Properties

Atomic Number
105   
13
69   
99+

Electron Configuration
[Rn] 5f14 6d3 7s2   
[Xe] 4f13 6s2   

Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Thulium.jpg#100   

Atom
  
  

Number of Protons
105   
13
69   
99+

Number of Neutrons
157   
7
100   
32

Number of Electrons
105   
13
69   
99+

Radius of an Atom
  
  

Atomic Radius
139.00 pm   
39
176.00 pm   
18

Covalent Radius
149.00 pm   
35
160.00 pm   
30

Atomic Weight
268.00 amu   
10
168.93 amu   
99+

Atomic Volume
Not Available   
18.10 cm3/mol   
28

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  

Next Element
Seaborgium
  
Ytterbium
  

Valence Electron Potential
Not Available   
49.70 (-eV)   
28

Lattice Constant
Not Available   
353.75 pm   
40

Lattice Angles
NA   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.57   
17

Mechanical Properties

Density
  
  

Density At Room Temperature
29.30 g/cm3   
5
9.32 g/cm3   
40

Density When Liquid (at m.p.)
Not Available   
8.56 g/cm3   
24

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.06 (Pa)   
10

Elasticity properties
  
  

Shear Modulus
Not Available   
30.50 GPa   
22

Bulk Modulus
Not Available   
44.50 GPa   
26

Young's Modulus
Not Available   
74.00 GPa   
27

Poisson Ratio
Not Available   
0.21   
31

Other Mechanical Properties
Unknown   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
Not Available   
9.32   
31

Magnetic Ordering
Unknown   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Unknown   
Conductor   

Resistivity
Not Available   
676.00 nΩ·m   
5

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   
0.16 J/(kg K)   
35

Molar Heat Capacity
Not Available   
27.03 J/mol·K   
22

Thermal Conductivity
Not Available   
16.90 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
13.30 µm/(m·K)   
29

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
191.00 kJ/mol   
99+

Enthalpy of Fusion
Not Available   
16.80 kJ/mol   
17

Enthalpy of Atomization
Not Available   
247.00 kJ/mol   
99+

Standard Molar Entropy
Not Available   
74.00 J/mol.K   
9

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