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Technetium Vanadium Comparison

Technetium
Vanadium
Vanadium Technetium comparison


Periodic Table
Symbol
Tc  
V  
Group Number
7  
11
5  
13
Period Number
5  
4  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440268  
99+
7440622  
27
Space Group Name
P63/mmc  
Im_ 3m  
Space Group Number
194.00  
7
229.00  
2
Facts
Interesting Facts
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  
  • Vanadium is a highly reactive metal, hence it is not found free in nature.
  • Vanadium can be found in almost 65 different types of minerals.
  
Sources
Made by Bombarding Molybdenum with Deuterons  
Found As a By-product, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Emilio Segrè and Carlo Perriero  
Andrés Manuel del Río  
Discovery
In 1937  
In 1801  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
11
Abundance In Sun
0.00 %  
18
0.00 %  
13
Abundance In Meteorites
-  
0.01 %  
14
Abundance In Earth's Crust
0.00 %  
99+
0.02 %  
12
Abundance In Oceans
-  
0.00 %  
14
Abundance In Humans
-  
0.00 %  
19
Uses
Uses & Benefits
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
  • Its ally with steel is used very tough and hence it is used in armor plates, axles, piston rods, tools and crankshafts.
  • Its oxide is used as pigments for glass and ceramics.
  
Industrial Uses
-  
Aerospace Industry, Automobile Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
Low Toxic  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
39
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
36
Physical
Melting Point
2,200.00 °C  
9
1,890.00 °C  
13
Boiling Point
4,877.00 °C  
7
3,380.00 °C  
21
Appearance
  
  
Physical State
Solid  
Solid  
Color
Shiny Gray  
Blue-Silver Grey  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
2.25  
16
6.70  
4
Brinell Hardness
550.00 MPa  
27
600.00 MPa  
24
Vickers Hardness
500.00 MPa  
35
628.00 MPa  
25
Speed of Sound
16,200.00 m/s  
1
4,560.00 m/s  
22
Optical Properties
  
  
Refractive Index
1.90  
18
2.05  
13
Reflectivity
35.00 %  
34
61.00 %  
22
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Tc  
V  
Isotopes
  
  
Known Isotopes
18  
21
22  
17
Electronegativity
  
  
Pauling Electronegativity
1.90  
12
1.63  
21
Sanderson Electronegativity
1.90  
13
1.39  
21
Allred Rochow Electronegativity
1.36  
21
1.45  
17
Mulliken-Jaffe Electronegativity
1.90  
13
1.63  
21
Allen Electronegativity
1.51  
31
1.53  
29
Electropositivity
  
  
Pauling Electropositivity
2.10  
99+
2.37  
34
Ionization Energies
  
  
1st Energy Level
702.00 kJ/mol  
36
650.90 kJ/mol  
99+
2nd Energy Level
1,470.00 kJ/mol  
99+
1,414.00 kJ/mol  
99+
3rd Energy Level
2,850.00 kJ/mol  
34
2,830.00 kJ/mol  
36
4th Energy Level
7,020.00 kJ/mol  
14
4,507.00 kJ/mol  
35
5th Energy Level
7,020.00 kJ/mol  
28
6,298.70 kJ/mol  
38
6th Energy Level
7,020.00 kJ/mol  
99+
12,363.00 kJ/mol  
6
7th Energy level
4,700.00 kJ/mol  
99+
14,530.00 kJ/mol  
5
8th Energy Level
4,700.00 kJ/mol  
99+
16,730.00 kJ/mol  
7
9th Energy Level
7,020.00 kJ/mol  
35
19,860.00 kJ/mol  
7
10th Energy Level
7,020.00 kJ/mol  
39
22,240.00 kJ/mol  
12
11th Energy Level
7,020.00 kJ/mol  
37
24,670.00 kJ/mol  
15
12th Energy Level
7,020.00 kJ/mol  
99+
29,730.00 kJ/mol  
34
13th Energy Level
7,020.00 kJ/mol  
33
32,446.00 kJ/mol  
12
14th Energy Level
7,020.00 kJ/mol  
23
86,450.00 kJ/mol  
1
15th Energy Level
70,200.00 kJ/mol  
29
94,170.00 kJ/mol  
3
16th Energy Level
70,200.00 kJ/mol  
24
102,300.00 kJ/mol  
3
17th Energy Level
702.50 kJ/mol  
99+
112,700.00 kJ/mol  
4
18th Energy Level
7,020.00 kJ/mol  
35
121,600.00 kJ/mol  
5
19th Energy Level
702.00 kJ/mol  
99+
130,700.00 kJ/mol  
6
20th Energy Level
702.00 kJ/mol  
35
143,400.00 kJ/mol  
8
21st Energy Level
702.00 kJ/mol  
99+
151,440.00 kJ/mol  
8
22nd Energy Level
702.00 kJ/mol  
29
650.00 kJ/mol  
32
23rd Energy Level
702.00 kJ/mol  
99+
650.90 kJ/mol  
99+
24th Energy Level
702.50 kJ/mol  
28
650.90 kJ/mol  
34
25th Energy Level
702.00 kJ/mol  
30
650.90 kJ/mol  
36
26th Energy Level
702.00 kJ/mol  
29
650.90 kJ/mol  
35
27th Energy Level
702.00 kJ/mol  
30
650.90 kJ/mol  
36
28th Energy Level
702.00 kJ/mol  
35
650.90 kJ/mol  
99+
29th Energy Level
702.00 kJ/mol  
36
650.90 kJ/mol  
99+
30th Energy Level
702.00 kJ/mol  
30
650.90 kJ/mol  
38
Electrochemical Equivalent
0.52 g/amp-hr  
99+
0.38 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.30 eV  
25
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Anti Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
43  
99+
23  
99+
Electron Configuration
[Kr] 4d5 5s2  
[Ar] 3d3 4s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Body Centered Cubic (BCC)  
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
43  
99+
23  
99+
Number of Neutrons
55  
99+
28  
99+
Number of Electrons
43  
99+
23  
99+
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
134.00 pm  
99+
Covalent Radius
147.00 pm  
39
153.00 pm  
35
Van der Waals Radius
200.00 pm  
35
200.00 pm  
35
Atomic Weight
98.00 amu  
99+
50.94 amu  
99+
Atomic Volume
8.50 cm3/mol  
99+
8.78 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Molybdenum
  
Titanium
  
Next Element
Ruthenium
  
Chromium
  
Valence Electron Potential
180.00 (-eV)  
3
120.00 (-eV)  
6
Lattice Constant
273.50 pm  
99+
303.00 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.60  
21
1.70  
9
Mechanical
Density
  
  
Density At Room Temperature
11.00 g/cm3  
36
6.00 g/cm3  
99+
Density When Liquid (at m.p.)
11.00 g/cm3  
34
5.50 g/cm3  
99+
Tensile Strength
50.00 MPa  
38
800.00 MPa  
6
Viscosity
0.00  
25
0.00  
11
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.23 (Pa)  
16
Elasticity properties
  
  
Shear Modulus
27.00 GPa  
34
47.00 GPa  
16
Bulk Modulus
100.00 GPa  
16
160.00 GPa  
11
Young's Modulus
50.00 GPa  
39
128.00 GPa  
17
Poisson Ratio
0.38  
6
0.37  
7
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
11.50  
37
5.96  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
15
Susceptibility
0.00  
24
0.00  
8
Electrical Properties
  
  
Electrical Property
Conductor  
Superconductor  
Resistivity
200.00 nΩ·m  
18
197.00 nΩ·m  
19
Electrical Conductivity
0.07 106/cm Ω  
35
0.05 106/cm Ω  
40
Electron Affinity
53.00 kJ/mol  
23
50.60 kJ/mol  
25
Thermal
Specific Heat
0.21 J/(kg K)  
30
0.49 J/(kg K)  
10
Molar Heat Capacity
24.27 J/mol·K  
99+
24.89 J/mol·K  
99+
Thermal Conductivity
50.60 W/m·K  
30
30.70 W/m·K  
40
Critical Temperature
2,150.00 K  
16
2,183.00 K  
15
Thermal Expansion
7.10 µm/(m·K)  
99+
8.40 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
660.00 kJ/mol  
7
458.60 kJ/mol  
19
Enthalpy of Fusion
23.01 kJ/mol  
9
17.57 kJ/mol  
14
Enthalpy of Atomization
649.00 kJ/mol  
9
514.60 kJ/mol  
17
Standard Molar Entropy
181.10 J/mol.K  
2
28.90 J/mol.K  
99+
Summary >>
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