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Hafnium vs Vanadium

Hafnium
Vanadium
Vanadium vs Hafnium


Periodic Table
Symbol
Hf  
V  
Group Number
4  
14
5  
13
Period Number
6  
4  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440586  
30
7440622  
27
Space Group Name
P63/mmc  
Im_ 3m  
Space Group Number
194.00  
7
229.00  
2
Facts
Interesting Facts
  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
  
  • 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
By-product Zirconium Refining  
Found As a By-product, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Dirk Coster and George de Hevesy  
Andrés Manuel del Río  
Discovery
In 1922  
In 1801  
Abundance
  
  
Abundance In Universe
0.00 %  
26
0.00 %  
11
Abundance In Sun
0.00 %  
26
0.00 %  
13
Abundance In Meteorites
0.00 %  
37
0.01 %  
14
Abundance In Earth's Crust
0.00 %  
31
0.02 %  
12
Abundance In Oceans
0.00 %  
27
0.00 %  
14
Abundance In Humans
0.00 %  
14
0.00 %  
19
Uses
Uses & Benefits
  • It has an ability to absorb neutrons and hence it is used to make control rods in nuclear submarines. And this metal is also used in Plasma welding torches.
  • It alloys with iron, titanium and niobium are very useful.
  
  • 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
Ammunition Industry  
Aerospace Industry, Automobile Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
Alloys, In Nuclear Reactors, Nuclear Research, Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
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
2,150.00 °C  
10
1,890.00 °C  
13
Boiling Point
5,400.00 °C  
5
3,380.00 °C  
21
Appearance
  
  
Physical State
Solid  
Solid  
Color
Gray  
Blue-Silver Grey  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
5.50  
7
6.70  
4
Brinell Hardness
1,450.00 MPa  
6
600.00 MPa  
24
Vickers Hardness
1,520.00 MPa  
10
628.00 MPa  
25
Speed of Sound
3,010.00 m/s  
39
4,560.00 m/s  
22
Optical Properties
  
  
Refractive Index
2.00  
15
2.05  
13
Reflectivity
71.00 %  
12
61.00 %  
22
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Hf  
V  
Isotopes
  
  
Known Isotopes
32  
7
22  
17
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
1.63  
21
Sanderson Electronegativity
1.30  
25
1.39  
21
Allred Rochow Electronegativity
1.23  
26
1.45  
17
Mulliken-Jaffe Electronegativity
1.30  
33
1.63  
21
Allen Electronegativity
1.16  
99+
1.53  
29
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
2.37  
34
Ionization Energies
  
  
1st Energy Level
658.50 kJ/mol  
40
650.90 kJ/mol  
99+
2nd Energy Level
1,440.00 kJ/mol  
99+
1,414.00 kJ/mol  
99+
3rd Energy Level
2,250.00 kJ/mol  
99+
2,830.00 kJ/mol  
36
4th Energy Level
3,216.00 kJ/mol  
99+
4,507.00 kJ/mol  
35
5th Energy Level
6,585.00 kJ/mol  
33
6,298.70 kJ/mol  
38
6th Energy Level
6,585.00 kJ/mol  
99+
12,363.00 kJ/mol  
6
7th Energy level
6,580.00 kJ/mol  
99+
14,530.00 kJ/mol  
5
8th Energy Level
6,580.00 kJ/mol  
99+
16,730.00 kJ/mol  
7
9th Energy Level
6,585.00 kJ/mol  
38
19,860.00 kJ/mol  
7
10th Energy Level
6,590.00 kJ/mol  
40
22,240.00 kJ/mol  
12
11th Energy Level
6,585.00 kJ/mol  
40
24,670.00 kJ/mol  
15
12th Energy Level
6,580.00 kJ/mol  
99+
29,730.00 kJ/mol  
34
13th Energy Level
6,580.00 kJ/mol  
35
32,446.00 kJ/mol  
12
14th Energy Level
658.50 kJ/mol  
99+
86,450.00 kJ/mol  
1
15th Energy Level
65,800.00 kJ/mol  
34
94,170.00 kJ/mol  
3
16th Energy Level
658.50 kJ/mol  
99+
102,300.00 kJ/mol  
3
17th Energy Level
658.50 kJ/mol  
99+
112,700.00 kJ/mol  
4
18th Energy Level
6,585.00 kJ/mol  
36
121,600.00 kJ/mol  
5
19th Energy Level
658.50 kJ/mol  
99+
130,700.00 kJ/mol  
6
20th Energy Level
658.00 kJ/mol  
37
143,400.00 kJ/mol  
8
21st Energy Level
658.50 kJ/mol  
99+
151,440.00 kJ/mol  
8
22nd Energy Level
658.00 kJ/mol  
31
650.00 kJ/mol  
32
23rd Energy Level
658.50 kJ/mol  
99+
650.90 kJ/mol  
99+
24th Energy Level
658.50 kJ/mol  
31
650.90 kJ/mol  
34
25th Energy Level
658.00 kJ/mol  
33
650.90 kJ/mol  
36
26th Energy Level
658.50 kJ/mol  
32
650.90 kJ/mol  
35
27th Energy Level
658.50 kJ/mol  
33
650.90 kJ/mol  
36
28th Energy Level
658.50 kJ/mol  
38
650.90 kJ/mol  
99+
29th Energy Level
658.50 kJ/mol  
39
650.90 kJ/mol  
99+
30th Energy Level
658.00 kJ/mol  
35
650.90 kJ/mol  
38
Electrochemical Equivalent
1.66 g/amp-hr  
99+
0.38 g/amp-hr  
99+
Electron Work Function
3.90 eV  
36
4.30 eV  
25
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Anti Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
72  
99+
23  
99+
Electron Configuration
[Xe] 4f14 5d2 6s2  
[Ar] 3d3 4s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
72  
99+
23  
99+
Number of Neutrons
106  
30
28  
99+
Number of Electrons
72  
99+
23  
99+
Radius of an Atom
  
  
Atomic Radius
159.00 pm  
30
134.00 pm  
99+
Covalent Radius
175.00 pm  
25
153.00 pm  
35
Van der Waals Radius
200.00 pm  
35
200.00 pm  
35
Atomic Weight
178.49 amu  
39
50.94 amu  
99+
Atomic Volume
13.60 cm3/mol  
99+
8.78 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Lutetium
  
Titanium
  
Next Element
Tantalum
  
Chromium
  
Valence Electron Potential
81.00 (-eV)  
16
120.00 (-eV)  
6
Lattice Constant
319.64 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
1.58  
34
1.70  
9
Mechanical
Density
  
  
Density At Room Temperature
13.31 g/cm3  
27
6.00 g/cm3  
99+
Density When Liquid (at m.p.)
12.00 g/cm3  
31
5.50 g/cm3  
99+
Tensile Strength
445.00 MPa  
9
800.00 MPa  
6
Viscosity
0.00  
28
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)  
25
0.23 (Pa)  
16
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
47.00 GPa  
16
Bulk Modulus
110.00 GPa  
15
160.00 GPa  
11
Young's Modulus
78.00 GPa  
27
128.00 GPa  
17
Poisson Ratio
0.37  
7
0.37  
7
Other Mechanical Properties
Ductile, Malleable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
13.31  
30
5.96  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
9
0.00 H/m  
15
Susceptibility
0.00  
13
0.00  
8
Electrical Properties
  
  
Electrical Property
Conductor  
Superconductor  
Resistivity
331.00 nΩ·m  
14
197.00 nΩ·m  
19
Electrical Conductivity
0.03 106/cm Ω  
99+
0.05 106/cm Ω  
40
Electron Affinity
0.00 kJ/mol  
99+
50.60 kJ/mol  
25
Thermal
Specific Heat
0.14 J/(kg K)  
38
0.49 J/(kg K)  
10
Molar Heat Capacity
25.73 J/mol·K  
99+
24.89 J/mol·K  
99+
Thermal Conductivity
23.00 W/m·K  
99+
30.70 W/m·K  
40
Critical Temperature
2,500.00 K  
11
2,183.00 K  
15
Thermal Expansion
5.90 µm/(m·K)  
99+
8.40 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
661.10 kJ/mol  
6
458.60 kJ/mol  
19
Enthalpy of Fusion
25.10 kJ/mol  
8
17.57 kJ/mol  
14
Enthalpy of Atomization
703.00 kJ/mol  
5
514.60 kJ/mol  
17
Standard Molar Entropy
43.60 J/mol.K  
99+
28.90 J/mol.K  
99+
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