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Tantalum vs Rhenium

Tantalum
Rhenium
Rhenium vs Tantalum


Periodic Table
Symbol
Ta  
Re  
Group Number
5  
13
7  
11
Period Number
6  
6  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440257  
99+
7440155  
99+
Space Group Name
Im_ 3m  
P63/mmc  
Space Group Number
229.00  
2
194.00  
7
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.
  
  • Chemical properties of Rhenium are similar to Manganese.
  • Rhenium metal is created while refining Molybdenum.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Anders Gustaf Ekeberg  
Masataka Ogawa  
Discovery
In 1802  
In 1908  
Abundance
  
  
Abundance In Universe
0.00 %  
32
0.00 %  
30
Abundance In Sun
0.00 %  
18
0.00 %  
29
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
0.00 %  
34
Abundance In Humans
0.00 %  
24
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.
  
  • Alloys of Rhenium are used as an electric contact material. It can resist withstand arc corrosion.
  • Its catalysts are used in hydrogenation of fine chemicals. Its Alloy with nickel is used to produce turbine blades.
  
Industrial Uses
Electrical Industry, Electronic Industry  
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Low Toxic  
Low Toxic  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
37
In Bone
0.03 p.p.m.  
33
0.00 p.p.m.  
99+
Physical
Melting Point
2,996.00 °C  
4
3,180.00 °C  
2
Boiling Point
5,425.00 °C  
4
5,627.00 °C  
2
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gray Blue  
Silvery Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.50  
5
7.00  
3
Brinell Hardness
440.00 MPa  
33
1,320.00 MPa  
8
Vickers Hardness
870.00 MPa  
19
1,350.00 MPa  
12
Speed of Sound
3,400.00 m/s  
33
4,700.00 m/s  
19
Optical Properties
  
  
Refractive Index
2.15  
10
1.90  
18
Reflectivity
78.00 %  
8
70.00 %  
13
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ta  
Re  
Isotopes
  
  
Known Isotopes
31  
8
33  
6
Electronegativity
  
  
Pauling Electronegativity
1.50  
28
1.90  
12
Sanderson Electronegativity
1.50  
18
1.90  
13
Allred Rochow Electronegativity
1.33  
23
1.46  
16
Mulliken-Jaffe Electronegativity
1.50  
26
1.90  
13
Allen Electronegativity
1.34  
38
1.60  
24
Electropositivity
  
  
Pauling Electropositivity
2.50  
27
2.10  
99+
Ionization Energies
  
  
1st Energy Level
761.00 kJ/mol  
18
760.00 kJ/mol  
20
2nd Energy Level
1,500.00 kJ/mol  
99+
1,260.00 kJ/mol  
99+
3rd Energy Level
761.00 kJ/mol  
99+
2,510.00 kJ/mol  
99+
4th Energy Level
7,610.00 kJ/mol  
9
3,640.00 kJ/mol  
99+
5th Energy Level
7,610.00 kJ/mol  
19
7,600.00 kJ/mol  
20
6th Energy Level
7,610.00 kJ/mol  
36
7,600.00 kJ/mol  
37
7th Energy level
7,610.00 kJ/mol  
30
7,600.00 kJ/mol  
31
8th Energy Level
7,610.00 kJ/mol  
30
5,560.00 kJ/mol  
99+
9th Energy Level
7,610.00 kJ/mol  
26
5,560.00 kJ/mol  
99+
10th Energy Level
7,610.00 kJ/mol  
30
7,600.00 kJ/mol  
31
11th Energy Level
7,610.00 kJ/mol  
29
7,600.00 kJ/mol  
30
12th Energy Level
7,610.00 kJ/mol  
99+
7,600.00 kJ/mol  
99+
13th Energy Level
7,610.00 kJ/mol  
22
7,600.00 kJ/mol  
23
14th Energy Level
7,610.00 kJ/mol  
19
7,600.00 kJ/mol  
20
15th Energy Level
76,100.00 kJ/mol  
19
76,000.00 kJ/mol  
20
16th Energy Level
76,100.00 kJ/mol  
14
76,000.00 kJ/mol  
15
17th Energy Level
761.00 kJ/mol  
35
760.10 kJ/mol  
36
18th Energy Level
7,610.00 kJ/mol  
25
7,600.00 kJ/mol  
26
19th Energy Level
761.00 kJ/mol  
32
760.40 kJ/mol  
33
20th Energy Level
761.00 kJ/mol  
26
760.00 kJ/mol  
27
21st Energy Level
761.00 kJ/mol  
99+
760.00 kJ/mol  
99+
22nd Energy Level
761.00 kJ/mol  
20
760.00 kJ/mol  
21
23rd Energy Level
761.00 kJ/mol  
99+
760.00 kJ/mol  
99+
24th Energy Level
761.00 kJ/mol  
16
760.00 kJ/mol  
18
25th Energy Level
761.00 kJ/mol  
16
760.00 kJ/mol  
18
26th Energy Level
761.00 kJ/mol  
16
760.00 kJ/mol  
18
27th Energy Level
761.00 kJ/mol  
15
760.00 kJ/mol  
17
28th Energy Level
761.00 kJ/mol  
21
760.00 kJ/mol  
23
29th Energy Level
761.00 kJ/mol  
22
760.00 kJ/mol  
24
30th Energy Level
761.00 kJ/mol  
16
760.00 kJ/mol  
18
Electrochemical Equivalent
1.35 g/amp-hr  
99+
0.99 g/amp-hr  
99+
Electron Work Function
4.25 eV  
28
4.96 eV  
11
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
73  
99+
75  
99+
Electron Configuration
[Xe] 4f14 5d3 6s2  
[Xe] 4f14 5d5 6s2  
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+
75  
40
Number of Neutrons
108  
29
111  
27
Number of Electrons
73  
99+
75  
40
Radius of an Atom
  
  
Atomic Radius
146.00 pm  
37
137.00 pm  
99+
Covalent Radius
170.00 pm  
27
151.00 pm  
36
Van der Waals Radius
200.00 pm  
35
200.00 pm  
35
Atomic Weight
180.95 amu  
38
186.21 amu  
36
Atomic Volume
10.90 cm3/mol  
99+
8.85 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Hafnium
  
Tungsten
  
Next Element
Tungsten
  
Osmium
  
Valence Electron Potential
110.00 (-eV)  
7
180.00 (-eV)  
3
Lattice Constant
330.13 pm  
99+
276.10 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.41  
99+
1.62  
17
Mechanical
Density
  
  
Density At Room Temperature
16.69 g/cm3  
18
21.02 g/cm3  
12
Density When Liquid (at m.p.)
15.00 g/cm3  
23
18.90 g/cm3  
14
Tensile Strength
180.00 MPa  
20
1,070.00 MPa  
3
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)  
40
Elasticity properties
  
  
Shear Modulus
69.00 GPa  
13
178.00 GPa  
3
Bulk Modulus
200.00 GPa  
8
370.00 GPa  
2
Young's Modulus
186.00 GPa  
14
463.00 GPa  
2
Poisson Ratio
0.34  
10
0.30  
14
Other Mechanical Properties
Ductile  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
16.65  
20
21.02  
14
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
8
Susceptibility
0.00  
27
0.00  
26
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
131.00 nΩ·m  
25
193.00 nΩ·m  
20
Electrical Conductivity
0.08 106/cm Ω  
32
0.05 106/cm Ω  
38
Electron Affinity
31.00 kJ/mol  
35
14.50 kJ/mol  
99+
Thermal
Specific Heat
0.14 J/(kg K)  
38
0.13 J/(kg K)  
40
Molar Heat Capacity
25.36 J/mol·K  
99+
25.48 J/mol·K  
99+
Thermal Conductivity
57.50 W/m·K  
27
48.00 W/m·K  
31
Critical Temperature
3,290.00 K  
4
3,459.00 K  
2
Thermal Expansion
6.30 µm/(m·K)  
99+
6.20 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
753.10 kJ/mol  
2
707.10 kJ/mol  
4
Enthalpy of Fusion
31.40 kJ/mol  
3
33.05 kJ/mol  
2
Enthalpy of Atomization
782.00 kJ/mol  
3
791.00 kJ/mol  
2
Standard Molar Entropy
41.50 J/mol.K  
99+
36.90 J/mol.K  
99+
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