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Tantalum vs Bohrium

Tantalum
Bohrium
Bohrium vs Tantalum


Periodic Table
Symbol
Ta  
Bh  
Group Number
5  
13
7  
11
Period Number
6  
7  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440257  
99+
54037148  
12
Space Group Name
Im_ 3m  
-  
Space Group Number
229.00  
2
276.00  
1
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.
  
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Found in Minerals, Mining, Synthetically Produced  
History
  
  
Who Discovered
Anders Gustaf Ekeberg  
Gesellschaft für Schwerionenforschung  
Discovery
In 1802  
In 1981  
Abundance
  
  
Abundance In Universe
0.00 %  
32
0.00 %  
37
Abundance In Sun
0.00 %  
18
-  
Abundance In Meteorites
0.00 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
37
0.00 %  
99+
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 Bohrium 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
7.00  
3
Brinell Hardness
440.00 MPa  
33
270.00 MPa  
99+
Vickers Hardness
870.00 MPa  
19
2,700.00 MPa  
4
Speed of Sound
3,400.00 m/s  
33
2,680.00 m/s  
99+
Optical Properties
  
  
Refractive Index
2.15  
10
1.50  
36
Reflectivity
78.00 %  
8
59.00 %  
24
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ta  
Bh  
Isotopes
  
  
Known Isotopes
31  
8
5  
32
Electronegativity
  
  
Pauling Electronegativity
1.50  
28
2.00  
8
Sanderson Electronegativity
1.50  
18
1.30  
25
Allred Rochow Electronegativity
1.33  
23
1.30  
25
Mulliken-Jaffe Electronegativity
1.50  
26
1.30  
33
Allen Electronegativity
1.34  
38
2.00  
6
Electropositivity
  
  
Pauling Electropositivity
2.50  
27
2.00  
99+
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol  
18
742.90 kJ/mol  
23
2nd Energy Level
1,500.00 kJ/mol  
99+
1,688.50 kJ/mol  
31
3rd Energy Level
761.00 kJ/mol  
99+
2,566.50 kJ/mol  
99+
4th Energy Level
7,610.00 kJ/mol  
9
3,598.90 kJ/mol  
99+
5th Energy Level
7,610.00 kJ/mol  
19
4,727.80 kJ/mol  
99+
6th Energy Level
7,610.00 kJ/mol  
36
5,991.70 kJ/mol  
99+
7th Energy level
7,610.00 kJ/mol  
30
7,226.80 kJ/mol  
34
8th Energy Level
7,610.00 kJ/mol  
30
7,100.00 kJ/mol  
33
9th Energy Level
7,610.00 kJ/mol  
26
5,800.00 kJ/mol  
99+
10th Energy Level
7,610.00 kJ/mol  
30
7,100.00 kJ/mol  
35
11th Energy Level
7,610.00 kJ/mol  
29
8,200.00 kJ/mol  
25
12th Energy Level
7,610.00 kJ/mol  
99+
82,700.00 kJ/mol  
4
13th Energy Level
7,610.00 kJ/mol  
22
7,100.00 kJ/mol  
29
14th Energy Level
7,610.00 kJ/mol  
19
8,200.00 kJ/mol  
17
15th Energy Level
76,100.00 kJ/mol  
19
82,000.00 kJ/mol  
14
16th Energy Level
76,100.00 kJ/mol  
14
71,100.00 kJ/mol  
20
17th Energy Level
761.00 kJ/mol  
35
820.00 kJ/mol  
31
18th Energy Level
7,610.00 kJ/mol  
25
8,200.00 kJ/mol  
20
19th Energy Level
761.00 kJ/mol  
32
820.80 kJ/mol  
28
20th Energy Level
761.00 kJ/mol  
26
820.00 kJ/mol  
21
21st Energy Level
761.00 kJ/mol  
99+
8,200.00 kJ/mol  
11
22nd Energy Level
761.00 kJ/mol  
20
820.00 kJ/mol  
16
23rd Energy Level
761.00 kJ/mol  
99+
8,200.00 kJ/mol  
8
24th Energy Level
761.00 kJ/mol  
16
820.00 kJ/mol  
12
25th Energy Level
761.00 kJ/mol  
16
820.00 kJ/mol  
10
26th Energy Level
761.00 kJ/mol  
16
820.00 kJ/mol  
10
27th Energy Level
761.00 kJ/mol  
15
820.00 kJ/mol  
9
28th Energy Level
761.00 kJ/mol  
21
820.00 kJ/mol  
15
29th Energy Level
761.00 kJ/mol  
22
820.00 kJ/mol  
14
30th Energy Level
761.00 kJ/mol  
16
820.00 kJ/mol  
10
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  
Atomic
Atomic Number
73  
99+
107  
11
Electron Configuration
[Xe] 4f14 5d3 6s2  
[Rn] 5f14 6d5 7s2  
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
73  
99+
107  
11
Number of Neutrons
108  
29
155  
9
Number of Electrons
73  
99+
107  
11
Radius of an Atom
  
  
Atomic Radius
146.00 pm  
37
128.00 pm  
99+
Covalent Radius
170.00 pm  
27
141.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
0.00 pm  
99+
Atomic Weight
180.95 amu  
38
270.00 amu  
8
Atomic Volume
10.90 cm3/mol  
99+
23.70 cm3/mol  
14
Adjacent Atomic Numbers
  
  
Previous Element
Hafnium
  
Seaborgium
  
Next Element
Tungsten
  
Hassium
  
Valence Electron Potential
110.00 (-eV)  
7
27.20 (-eV)  
99+
Lattice Constant
330.13 pm  
99+
-  
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.41  
99+
1.57  
99+
Mechanical
Density
  
  
Density At Room Temperature
16.69 g/cm3  
18
37.10 g/cm3  
3
Density When Liquid (at m.p.)
15.00 g/cm3  
23
37.10 g/cm3  
3
Tensile Strength
180.00 MPa  
20
152.00 MPa  
24
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
69.00 GPa  
13
28.00 GPa  
32
Bulk Modulus
200.00 GPa  
8
37.00 GPa  
99+
Young's Modulus
186.00 GPa  
14
0.00 GPa  
99+
Poisson Ratio
0.34  
10
0.35  
9
Other Mechanical Properties
Ductile  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
16.65  
20
37.00  
5
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
17
0.00 H/m  
11
Susceptibility
0.00  
27
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
-  
Resistivity
131.00 nΩ·m  
25
6.50 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+
37.10 J/mol·K  
2
Thermal Conductivity
57.50 W/m·K  
27
37.00 W/m·K  
36
Critical Temperature
3,290.00 K  
4
1,323.00 K  
99+
Thermal Expansion
6.30 µm/(m·K)  
99+
14.30 µm/(m·K)  
28
Enthalpy
  
  
Enthalpy of Vaporization
753.10 kJ/mol  
2
270.50 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+
57.00 J/mol.K  
30
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