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Vanadium vs Chromium

Vanadium
Chromium
Chromium vs Vanadium


Periodic Table
Symbol
V  
Cr  
Group Number
5  
13
6  
12
Period Number
4  
4  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440622  
27
7440473  
39
Space Group Name
Im_ 3m  
Im_ 3m  
Space Group Number
229.00  
2
229.00  
2
Facts
Interesting Facts
  • 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.
  
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
  
Sources
Found As a By-product, Found in Minerals, Mining, Ores of Minerals  
Found in Minerals, Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Andrés Manuel del Río  
Louis Nicolas Vauquelin  
Discovery
In 1801  
In Between 1797 - 1798  
Abundance
  
  
Abundance In Universe
0.00 %  
11
0.00 %  
8
Abundance In Sun
0.00 %  
13
0.00 %  
7
Abundance In Meteorites
0.01 %  
14
0.30 %  
7
Abundance In Earth's Crust
0.02 %  
12
0.01 %  
13
Abundance In Oceans
0.00 %  
14
0.00 %  
16
Abundance In Humans
0.00 %  
19
0.00 %  
19
Uses
Uses & Benefits
  • 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.
  
  • It is used to harden the steel and produces a stainless steel and other various alloys.
  • It is also used to give proper finish to polished mirrors. Its chromium plates are used in bathroom fittings.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry  
Automobile Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Highly Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
39
0.11 Blood/mg dm-3  
12
In Bone
0.00 p.p.m.  
36
0.33 p.p.m.  
25
Physical
Melting Point
1,890.00 °C  
13
1,857.00 °C  
14
Boiling Point
3,380.00 °C  
21
2,672.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Blue-Silver Grey  
Silver  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.70  
4
8.50  
1
Brinell Hardness
600.00 MPa  
24
687.00 MPa  
18
Vickers Hardness
628.00 MPa  
25
1,060.00 MPa  
17
Speed of Sound
4,560.00 m/s  
22
5,940.00 m/s  
8
Optical Properties
  
  
Refractive Index
2.05  
13
2.97  
2
Reflectivity
61.00 %  
22
70.00 %  
13
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
V  
Cr  
Isotopes
  
  
Known Isotopes
22  
17
21  
18
Electronegativity
  
  
Pauling Electronegativity
1.63  
21
1.66  
19
Sanderson Electronegativity
1.39  
21
1.66  
17
Allred Rochow Electronegativity
1.45  
17
1.56  
11
Mulliken-Jaffe Electronegativity
1.63  
21
1.66  
19
Allen Electronegativity
1.53  
29
1.65  
22
Electropositivity
  
  
Pauling Electropositivity
2.37  
34
2.34  
36
Ionization Energies
  
  
1st Energy Level
650.90 kJ/mol  
99+
26,130.00 kJ/mol  
1
2nd Energy Level
1,414.00 kJ/mol  
99+
28,750.00 kJ/mol  
1
3rd Energy Level
2,830.00 kJ/mol  
36
34,230.00 kJ/mol  
1
4th Energy Level
4,507.00 kJ/mol  
35
37,066.00 kJ/mol  
1
5th Energy Level
6,298.70 kJ/mol  
38
97,510.00 kJ/mol  
1
6th Energy Level
12,363.00 kJ/mol  
6
105,800.00 kJ/mol  
1
7th Energy level
14,530.00 kJ/mol  
5
114,300.00 kJ/mol  
1
8th Energy Level
16,730.00 kJ/mol  
7
125,300.00 kJ/mol  
1
9th Energy Level
19,860.00 kJ/mol  
7
134,700.00 kJ/mol  
1
10th Energy Level
22,240.00 kJ/mol  
12
144,300.00 kJ/mol  
1
11th Energy Level
24,670.00 kJ/mol  
15
26,130.00 kJ/mol  
12
12th Energy Level
29,730.00 kJ/mol  
34
28,750.00 kJ/mol  
36
13th Energy Level
32,446.00 kJ/mol  
12
34,230.00 kJ/mol  
10
14th Energy Level
86,450.00 kJ/mol  
1
37,066.00 kJ/mol  
12
15th Energy Level
94,170.00 kJ/mol  
3
97,510.00 kJ/mol  
2
16th Energy Level
102,300.00 kJ/mol  
3
105,800.00 kJ/mol  
2
17th Energy Level
112,700.00 kJ/mol  
4
114,300.00 kJ/mol  
3
18th Energy Level
121,600.00 kJ/mol  
5
125,300.00 kJ/mol  
4
19th Energy Level
130,700.00 kJ/mol  
6
134,700.00 kJ/mol  
5
20th Energy Level
143,400.00 kJ/mol  
8
144,300.00 kJ/mol  
7
21st Energy Level
151,440.00 kJ/mol  
8
157,700.00 kJ/mol  
7
22nd Energy Level
650.00 kJ/mol  
32
166,090.00 kJ/mol  
6
23rd Energy Level
650.90 kJ/mol  
99+
653.80 kJ/mol  
99+
24th Energy Level
650.90 kJ/mol  
34
653.80 kJ/mol  
32
25th Energy Level
650.90 kJ/mol  
36
653.80 kJ/mol  
34
26th Energy Level
650.90 kJ/mol  
35
653.80 kJ/mol  
33
27th Energy Level
650.90 kJ/mol  
36
652.90 kJ/mol  
34
28th Energy Level
650.90 kJ/mol  
99+
653.80 kJ/mol  
39
29th Energy Level
650.90 kJ/mol  
99+
653.80 kJ/mol  
40
30th Energy Level
650.90 kJ/mol  
38
653.80 kJ/mol  
36
Electrochemical Equivalent
0.38 g/amp-hr  
99+
0.32 g/amp-hr  
99+
Electron Work Function
4.30 eV  
25
4.50 eV  
19
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes  
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
23  
99+
24  
99+
Electron Configuration
[Ar] 3d3 4s2  
[Ar] 3d5 4s1  
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
23  
99+
24  
99+
Number of Neutrons
28  
99+
28  
99+
Number of Electrons
23  
99+
24  
99+
Radius of an Atom
  
  
Atomic Radius
134.00 pm  
99+
128.00 pm  
99+
Covalent Radius
153.00 pm  
35
139.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
200.00 pm  
35
Atomic Weight
50.94 amu  
99+
52.00 amu  
99+
Atomic Volume
8.78 cm3/mol  
99+
7.23 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Titanium
  
Vanadium
  
Next Element
Chromium
  
Manganese
  
Valence Electron Potential
120.00 (-eV)  
6
170.00 (-eV)  
4
Lattice Constant
303.00 pm  
99+
291.00 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.70  
9
1.86  
4
Mechanical
Density
  
  
Density At Room Temperature
6.00 g/cm3  
99+
7.19 g/cm3  
99+
Density When Liquid (at m.p.)
5.50 g/cm3  
99+
6.30 g/cm3  
99+
Tensile Strength
800.00 MPa  
6
689.00 MPa  
7
Viscosity
0.00  
11
0.00  
23
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
26
Vapor Pressure at 2000 K
0.23 (Pa)  
16
774.00 (Pa)  
1
Elasticity properties
  
  
Shear Modulus
47.00 GPa  
16
115.00 GPa  
9
Bulk Modulus
160.00 GPa  
11
160.00 GPa  
11
Young's Modulus
128.00 GPa  
17
279.00 GPa  
8
Poisson Ratio
0.37  
7
0.21  
33
Other Mechanical Properties
Ductile, Malleable  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
5.96  
99+
7.19  
99+
Magnetic Ordering
Paramagnetic  
Antiferromagnetic  
Permeability
0.00 H/m  
15
0.00 H/m  
17
Susceptibility
0.00  
8
0.00  
10
Electrical Properties
  
  
Electrical Property
Superconductor  
-  
Resistivity
197.00 nΩ·m  
19
125.00 nΩ·m  
27
Electrical Conductivity
0.05 106/cm Ω  
40
0.08 106/cm Ω  
30
Electron Affinity
50.60 kJ/mol  
25
64.30 kJ/mol  
17
Thermal
Specific Heat
0.49 J/(kg K)  
10
0.45 J/(kg K)  
12
Molar Heat Capacity
24.89 J/mol·K  
99+
23.35 J/mol·K  
99+
Thermal Conductivity
30.70 W/m·K  
40
93.90 W/m·K  
17
Critical Temperature
2,183.00 K  
15
1,907.00 K  
24
Thermal Expansion
8.40 µm/(m·K)  
99+
4.90 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
458.60 kJ/mol  
19
348.80 kJ/mol  
35
Enthalpy of Fusion
17.57 kJ/mol  
14
15.31 kJ/mol  
20
Enthalpy of Atomization
514.60 kJ/mol  
17
397.50 kJ/mol  
27
Standard Molar Entropy
28.90 J/mol.K  
99+
23.80 J/mol.K  
99+
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