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Tantalum vs Dubnium

Tantalum
Dubnium
Dubnium vs Tantalum


Periodic Table
Symbol
Ta  
Db  
Group Number
5  
13
5  
13
Period Number
6  
7  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440257  
99+
53850354  
14
Space Group Name
Im_ 3m  
-  
Space Group Number
229.00  
2
166.00  
9
Facts
Interesting Facts
  • Tantalum metal is known as corrosion resistance.
  • Tantalum metal can easily fabricated and It is a good conductor of heat and electricity.
  
  • IUPAC allotted a temporary name to Dubnium metal as “ Unnilpentium”.
  • In the production of Dubnium, thermal gradient chromatography is used.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Produced by Bombarding Am243 with Ne22, Synthetically Produced  
History
  
  
Who Discovered
Anders Gustaf Ekeberg  
Joint Institute for Nuclear Research  
Discovery
In 1802  
In 1968  
Abundance
  
  
Abundance In Universe
0.00 %  
32
0.00 %  
40
Abundance In Sun
0.00 %  
18
-  
Abundance In Meteorites
0.00 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
37
-  
Abundance In Oceans
0.00 %  
31
-  
Abundance In Humans
0.00 %  
24
-  
Uses
Uses & Benefits
  • Tantalum metal is mainly used in the manufacturing of electron components. Its Oxide layer acts as an insulator.
  • Tantalum metal is also used in surgical transplant like replacement of bone, skull plates and as a woven gauze.
  
  • Currently known uses of Dubnium metal are limited to research purpose only.
  
Industrial Uses
Electrical Industry, Electronic Industry  
-  
Medical Uses
-  
-  
Other Uses
Alloys  
Research Purposes  
Biological Properties
  
  
Toxicity
Low Toxic  
-  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
40
In Bone
0.03 p.p.m.  
33
0.00 p.p.m.  
99+
Physical
Melting Point
2,996.00 °C  
4
-  
Boiling Point
5,425.00 °C  
4
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gray Blue  
-  
Luster
Metallic  
Unknown Luster  
Hardness
  
  
Mohs Hardness
6.50  
5
6.00  
6
Brinell Hardness
440.00 MPa  
33
330.00 MPa  
38
Vickers Hardness
870.00 MPa  
19
400.00 MPa  
99+
Speed of Sound
3,400.00 m/s  
33
2,680.00 m/s  
99+
Optical Properties
  
  
Refractive Index
2.15  
10
1.20  
99+
Reflectivity
78.00 %  
8
55.00 %  
27
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ta  
Db  
Isotopes
  
  
Known Isotopes
31  
8
10  
28
Electronegativity
  
  
Pauling Electronegativity
1.50  
28
2.20  
5
Sanderson Electronegativity
1.50  
18
1.30  
25
Allred Rochow Electronegativity
1.33  
23
1.30  
25
Mulliken-Jaffe Electronegativity
1.50  
26
1.10  
99+
Allen Electronegativity
1.34  
38
1.30  
40
Electropositivity
  
  
Pauling Electropositivity
2.50  
27
2.00  
99+
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol  
18
664.80 kJ/mol  
38
2nd Energy Level
1,500.00 kJ/mol  
99+
1,546.70 kJ/mol  
39
3rd Energy Level
761.00 kJ/mol  
99+
2,378.40 kJ/mol  
99+
4th Energy Level
7,610.00 kJ/mol  
9
3,298.80 kJ/mol  
99+
5th Energy Level
7,610.00 kJ/mol  
19
4,305.20 kJ/mol  
99+
6th Energy Level
7,610.00 kJ/mol  
36
12,900.00 kJ/mol  
5
7th Energy level
7,610.00 kJ/mol  
30
3,300.00 kJ/mol  
99+
8th Energy Level
7,610.00 kJ/mol  
30
5,280.00 kJ/mol  
99+
9th Energy Level
7,610.00 kJ/mol  
26
5,780.00 kJ/mol  
99+
10th Energy Level
7,610.00 kJ/mol  
30
8,830.00 kJ/mol  
22
11th Energy Level
7,610.00 kJ/mol  
29
3,300.00 kJ/mol  
99+
12th Energy Level
7,610.00 kJ/mol  
99+
88,300.00 kJ/mol  
2
13th Energy Level
7,610.00 kJ/mol  
22
4,760.00 kJ/mol  
99+
14th Energy Level
7,610.00 kJ/mol  
19
1,120.00 kJ/mol  
99+
15th Energy Level
76,100.00 kJ/mol  
19
33,000.00 kJ/mol  
99+
16th Energy Level
76,100.00 kJ/mol  
14
33,000.00 kJ/mol  
99+
17th Energy Level
761.00 kJ/mol  
35
1,129.00 kJ/mol  
19
18th Energy Level
7,610.00 kJ/mol  
25
0.00 kJ/mol  
99+
19th Energy Level
761.00 kJ/mol  
32
1,094.90 kJ/mol  
18
20th Energy Level
761.00 kJ/mol  
26
0.00 kJ/mol  
99+
21st Energy Level
761.00 kJ/mol  
99+
883.00 kJ/mol  
36
22nd Energy Level
761.00 kJ/mol  
20
330.00 kJ/mol  
99+
23rd Energy Level
761.00 kJ/mol  
99+
1,150.00 kJ/mol  
33
24th Energy Level
761.00 kJ/mol  
16
528.30 kJ/mol  
99+
25th Energy Level
761.00 kJ/mol  
16
0.00 kJ/mol  
99+
26th Energy Level
761.00 kJ/mol  
16
579.80 kJ/mol  
99+
27th Energy Level
761.00 kJ/mol  
15
0.00 kJ/mol  
99+
28th Energy Level
761.00 kJ/mol  
21
1,150.00 kJ/mol  
3
29th Energy Level
761.00 kJ/mol  
22
1,094.00 kJ/mol  
5
30th Energy Level
761.00 kJ/mol  
16
0.00 kJ/mol  
99+
Electrochemical Equivalent
1.35 g/amp-hr  
99+
3.00 g/amp-hr  
21
Electron Work Function
4.25 eV  
28
4.90 eV  
12
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
73  
99+
105  
13
Electron Configuration
[Xe] 4f14 5d3 6s2  
[Rn] 5f14 6d3 7s2  
Crystal Structure
Body Centered Cubic (BCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
73  
99+
105  
13
Number of Neutrons
108  
29
157  
8
Number of Electrons
73  
99+
105  
13
Radius of an Atom
  
  
Atomic Radius
146.00 pm  
37
139.00 pm  
99+
Covalent Radius
170.00 pm  
27
149.00 pm  
37
Van der Waals Radius
200.00 pm  
35
0.00 pm  
99+
Atomic Weight
180.95 amu  
38
268.00 amu  
10
Atomic Volume
10.90 cm3/mol  
99+
22.80 cm3/mol  
17
Adjacent Atomic Numbers
  
  
Previous Element
Hafnium
  
Rutherfordium
  
Next Element
Tungsten
  
Seaborgium
  
Valence Electron Potential
110.00 (-eV)  
7
0.00 (-eV)  
99+
Lattice Constant
330.13 pm  
99+
-  
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.41  
99+
1.63  
14
Mechanical
Density
  
  
Density At Room Temperature
16.69 g/cm3  
18
29.30 g/cm3  
5
Density When Liquid (at m.p.)
15.00 g/cm3  
23
29.30 g/cm3  
6
Tensile Strength
180.00 MPa  
20
0.10 MPa  
99+
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
69.00 GPa  
13
34.00 GPa  
22
Bulk Modulus
200.00 GPa  
8
39.00 GPa  
39
Young's Modulus
186.00 GPa  
14
0.00 GPa  
99+
Poisson Ratio
0.34  
10
0.39  
5
Other Mechanical Properties
Ductile  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
16.65  
20
39.00  
3
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
27
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
-  
Resistivity
131.00 nΩ·m  
25
6.80 nΩ·m  
99+
Electrical Conductivity
0.08 106/cm Ω  
32
0.00 106/cm Ω  
99+
Electron Affinity
31.00 kJ/mol  
35
-  
Thermal
Specific Heat
0.14 J/(kg K)  
38
0.10 J/(kg K)  
99+
Molar Heat Capacity
25.36 J/mol·K  
99+
29.30 J/mol·K  
11
Thermal Conductivity
57.50 W/m·K  
27
0.00 W/m·K  
99+
Critical Temperature
3,290.00 K  
4
1,323.00 K  
99+
Thermal Expansion
6.30 µm/(m·K)  
99+
13.20 µm/(m·K)  
37
Enthalpy
  
  
Enthalpy of Vaporization
753.10 kJ/mol  
2
289.70 kJ/mol  
99+
Enthalpy of Fusion
31.40 kJ/mol  
3
-  
Enthalpy of Atomization
782.00 kJ/mol  
3
-  
Standard Molar Entropy
41.50 J/mol.K  
99+
55.00 J/mol.K  
34
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