Home
×

Chromium
Chromium

Cobalt
Cobalt



ADD
Compare
X
Chromium
X
Cobalt

Chromium vs Cobalt

Add ⊕
1 Periodic Table
1.1 Symbol
Cr
Co
1.2 Group Number
Tennessine
6
Rank: 12 (Overall)
9
Rank: 9 (Overall)
Gadolinium
ADD ⊕
1.3 Period Number
Uranium
4
Rank: 4 (Overall)
4
Rank: 4 (Overall)
Lithium
ADD ⊕
1.4 Block
d block
d block
1.5 Element Family
Transition Metal
Transition Metal
1.6 CAS Number
Roentgenium
7440473
Rank: 39 (Overall)
7440484
Rank: 38 (Overall)
Aluminium
ADD ⊕
1.7 Space Group Name
Im_ 3m
P63/mmc
1.8 Space Group Number
Sodium
229.00
Rank: 1 (Overall)
194.00
Rank: 5 (Overall)
Plutonium
ADD ⊕
2 Facts
2.1 Interesting Facts
  • 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.
  • The main source of Cobalt is as a by-product of copper and nickel metal mining.
  • Cobalt metal can be obtained from other elements like Oxygen, Sulfur and Arsenic.
  • It s also used in electroplating process as it exhibits anti cession properties.
2.2 Sources
Found in Minerals, Mining, Ores of metals, Ores of Minerals
Found in Compounds, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Louis Nicolas Vauquelin
Georg Brandt
2.3.2 Discovery
In Between 1797 - 1798
In 1732
2.4 Abundance
2.4.1 Abundance In Universe
Iron
1.5 * 10-3 %
Rank: 7 (Overall)
3 * 10-4 %
Rank: 9 (Overall)
Thallium
ADD ⊕
2.4.2 Abundance In Sun
Iron
~0.002 %
Rank: 7 (Overall)
~0.0004 %
Rank: 9 (Overall)
Beryllium
ADD ⊕
2.4.3 Abundance In Meteorites
Iron
0.30 %
Rank: 7 (Overall)
0.06 %
Rank: 10 (Overall)
Gold
ADD ⊕
2.4.4 Abundance In Earth's Crust
Aluminium
0.01 %
Rank: 13 (Overall)
0.00 %
Rank: 21 (Overall)
Radium
ADD ⊕
2.4.5 Abundance In Oceans
Sodium
0.00 %
Rank: 16 (Overall)
0.00 %
Rank: 20 (Overall)
Protactinium
ADD ⊕
2.4.6 Abundance In Humans
Calcium
0.00 %
Rank: 16 (Overall)
0.00 %
Rank: 17 (Overall)
Radium
ADD ⊕
3 Uses
3.1 Uses & Benefits
  • 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.
  • Its alloys with aluminum and nickel are used to make powerful magnets.
  • Few other alloys exhibit high-temperature strength and hence they are used in Turbines of Jet and Gas engine.
3.1.1 Industrial Uses
Automobile Industry, Chemical Industry
Chemical Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
NA
Pharmaceutical Industry
3.1.3 Other Uses
Alloys
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Highly Toxic
Toxic
3.2.2 Present in Human Body
60% Transition Metals Metals have it !
60% Transition Metals Metals have it !
3.2.3 In Blood
Sodium
0.11 Blood/mg dm-3
Rank: 12 (Overall)
0.04 Blood/mg dm-3
Rank: 18 (Overall)
Plutonium
ADD ⊕
3.2.4 In Bone
Calcium
0.33 p.p.m.
Rank: 21 (Overall)
0.04 p.p.m.
Rank: 27 (Overall)
Plutonium
ADD ⊕
4 Physical
4.1 Melting Point
Tungsten
1,857.00 °C
Rank: 14 (Overall)
1,495.00 °C
Rank: 29 (Overall)
Francium
ADD ⊕
4.2 Boiling Point
Tungsten
2,672.00 °C
Rank: 39 (Overall)
2,870.00 °C
Rank: 34 (Overall)
Flerovium
ADD ⊕
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silver
Gray
4.3.3 Luster
Metallic
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
Chromium
8.50
Rank: 1 (Overall)
5.00
Rank: 8 (Overall)
Cesium
ADD ⊕
4.4.2 Brinell Hardness
Osmium
687.00 MPa
Rank: 16 (Overall)
470.00 MPa
Rank: 26 (Overall)
Cesium
ADD ⊕
4.4.3 Vickers Hardness
Tungsten
1,060.00 MPa
Rank: 10 (Overall)
1,043.00 MPa
Rank: 11 (Overall)
Palladium
ADD ⊕
4.5 Speed of Sound
Technetium
5,940.00 m/s
Rank: 5 (Overall)
4,720.00 m/s
Rank: 14 (Overall)
Thallium
ADD ⊕
4.6 Optical Properties
4.6.1 Refractive Index
Palladium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury
ADD ⊕
4.6.2 Reflectivity
Silver
Not Available
Rank: N/A (Overall)
67.00 %
Rank: 11 (Overall)
Molybdenum
ADD ⊕
4.7 Allotropes
6% Transition Metals Metals have it !
6% Transition Metals Metals have it !
4.7.1 α Allotropes
Not Available
α-Cobalt
4.7.2 β Allotropes
Not Available
β-Cobalt
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
Cr
Co
5.2 Isotopes
5.2.1 Known Isotopes
Palladium
21
Rank: 18 (Overall)
26
Rank: 13 (Overall)
Tennessine
ADD ⊕
5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold
1.66
Rank: 18 (Overall)
1.88
Rank: 12 (Overall)
Francium
ADD ⊕
5.3.2 Sanderson Electronegativity
Cobalt
1.66
Rank: 14 (Overall)
2.56
Rank: 1 (Overall)
Cesium
ADD ⊕
5.3.3 Allred Rochow Electronegativity
Gallium
1.56
Rank: 10 (Overall)
1.70
Rank: 5 (Overall)
Cesium
ADD ⊕
5.3.4 Mulliken-Jaffe Electronegativity
Polonium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
ADD ⊕
5.3.5 Allen Electronegativity
Berkelium
1.65
Rank: 19 (Overall)
1.84
Rank: 10 (Overall)
Cesium
ADD ⊕
5.4 Electropositivity
5.4.1 Pauling Electropositivity
Francium
2.34
Rank: 36 (Overall)
2.12
Rank: 41 (Overall)
Gold
ADD ⊕
5.5 Ionization Energies
5.5.1 1st Energy Level
Chromium
26,130.00 kJ/mol
Rank: 1 (Overall)
760.40 kJ/mol
Rank: 19 (Overall)
Cesium
ADD ⊕
5.5.2 2nd Energy Level
Chromium
28,750.00 kJ/mol
Rank: 1 (Overall)
1,648.00 kJ/mol
Rank: 31 (Overall)
Ruthenium
ADD ⊕
5.5.3 3rd Energy Level
Chromium
34,230.00 kJ/mol
Rank: 1 (Overall)
3,232.00 kJ/mol
Rank: 22 (Overall)
Osmium
ADD ⊕
5.5.4 4th Energy Level
Chromium
37,066.00 kJ/mol
Rank: 1 (Overall)
4,950.00 kJ/mol
Rank: 19 (Overall)
Thorium
ADD ⊕
5.5.5 5th Energy Level
Chromium
97,510.00 kJ/mol
Rank: 1 (Overall)
7,670.00 kJ/mol
Rank: 12 (Overall)
Dubnium
ADD ⊕
5.5.6 6th Energy Level
Chromium
105,800.00 kJ/mol
Rank: 1 (Overall)
9,840.00 kJ/mol
Rank: 12 (Overall)
Seaborgium
ADD ⊕
5.5.7 7th Energy level
Chromium
114,300.00 kJ/mol
Rank: 1 (Overall)
12,440.00 kJ/mol
Rank: 11 (Overall)
Bohrium
ADD ⊕
5.5.8 8th Energy Level
Chromium
125,300.00 kJ/mol
Rank: 1 (Overall)
15,230.00 kJ/mol
Rank: 12 (Overall)
Hassium
ADD ⊕
5.5.9 9th Energy Level
Chromium
134,700.00 kJ/mol
Rank: 1 (Overall)
17,959.00 kJ/mol
Rank: 13 (Overall)
Yttrium
ADD ⊕
5.5.10 10th Energy Level
Chromium
144,300.00 kJ/mol
Rank: 1 (Overall)
26,570.00 kJ/mol
Rank: 7 (Overall)
Strontium
ADD ⊕
5.5.11 11th Energy Level
Magnesium
26,130.00 kJ/mol
Rank: 12 (Overall)
29,400.00 kJ/mol
Rank: 8 (Overall)
Yttrium
ADD ⊕
5.5.12 12th Energy Level
Magnesium
28,750.00 kJ/mol
Rank: 13 (Overall)
32,400.00 kJ/mol
Rank: 8 (Overall)
Molybdenum
ADD ⊕
5.5.13 13th Energy Level
Titanium
34,230.00 kJ/mol
Rank: 10 (Overall)
36,600.00 kJ/mol
Rank: 8 (Overall)
Molybdenum
ADD ⊕
5.5.14 14th Energy Level
Vanadium
37,066.00 kJ/mol
Rank: 12 (Overall)
39,700.00 kJ/mol
Rank: 9 (Overall)
Molybdenum
ADD ⊕
5.5.15 15th Energy Level
Chromium
97,510.00 kJ/mol
Rank: 1 (Overall)
42,800.00 kJ/mol
Rank: 12 (Overall)
Manganese
ADD ⊕
5.5.16 16th Energy Level
Manganese
105,800.00 kJ/mol
Rank: 2 (Overall)
49,396.00 kJ/mol
Rank: 11 (Overall)
Iron
ADD ⊕
5.5.17 17th Energy Level
Iron
114,300.00 kJ/mol
Rank: 3 (Overall)
52,737.00 kJ/mol
Rank: 13 (Overall)
Cobalt
ADD ⊕
5.5.18 18th Energy Level
Cobalt
125,300.00 kJ/mol
Rank: 4 (Overall)
134,810.00 kJ/mol
Rank: 1 (Overall)
Nickel
ADD ⊕
5.5.19 19th Energy Level
Nickel
134,700.00 kJ/mol
Rank: 5 (Overall)
145,170.00 kJ/mol
Rank: 2 (Overall)
Copper
ADD ⊕
5.5.20 20th Energy Level
Zinc
144,300.00 kJ/mol
Rank: 7 (Overall)
154,700.00 kJ/mol
Rank: 4 (Overall)
Molybdenum
ADD ⊕
5.5.21 21st Energy Level
Zinc
157,700.00 kJ/mol
Rank: 7 (Overall)
167,400.00 kJ/mol
Rank: 4 (Overall)
Molybdenum
ADD ⊕
5.5.22 22nd Energy Level
Copper
166,090.00 kJ/mol
Rank: 6 (Overall)
178,100.00 kJ/mol
Rank: 3 (Overall)
Molybdenum
ADD ⊕
5.5.23 23rd Energy Level
Copper
Not Available
Rank: 100 (Overall)
189,300.00 kJ/mol
Rank: 3 (Overall)
Molybdenum
ADD ⊕
5.5.24 24th Energy Level
Iron
Not Available
Rank: 100 (Overall)
Not Available
Rank: 100 (Overall)
Molybdenum
ADD ⊕
5.5.25 25th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Molybdenum
5.5.26 26th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Molybdenum
5.5.27 27th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: 100 (Overall)
Molybdenum
5.5.28 28th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.29 29th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.30 30th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.6 Electrochemical Equivalent
Francium
0.32 g/amp-hr
Rank: 73 (Overall)
1.10 g/amp-hr
Rank: 57 (Overall)
Beryllium
ADD ⊕
5.7 Electron Work Function
Platinum
4.50 eV
Rank: 14 (Overall)
5.00 eV
Rank: 5 (Overall)
Cesium
ADD ⊕
5.8 Other Chemical Properties
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility
Chemical Stability, Ionization
6 Atomic
6.1 Atomic Number
Tennessine
24
Rank: 82 (Overall)
22
Rank: 84 (Overall)
Lithium
ADD ⊕
6.2 Electron Configuration
[Ar] 3d5 4s1
[Ar] 3d2 4s2
6.3 Crystal Structure
Body Centered Cubic (BCC)
Hexagonal Close Packed (HCP)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
Tennessine
24
Rank: 81 (Overall)
22
Rank: 83 (Overall)
Lithium
ADD ⊕
6.4.2 Number of Neutrons
Flerovium
28
Rank: 61 (Overall)
26
Rank: 62 (Overall)
Lithium
ADD ⊕
6.4.3 Number of Electrons
Tennessine
24
Rank: 81 (Overall)
22
Rank: 83 (Overall)
Lithium
ADD ⊕
6.5 Radius of an Atom
6.5.1 Atomic Radius
Cesium
128.00 pm
Rank: 46 (Overall)
147.00 pm
Rank: 34 (Overall)
Beryllium
ADD ⊕
6.5.2 Covalent Radius
Francium
139.00 pm
Rank: 45 (Overall)
160.00 pm
Rank: 30 (Overall)
Beryllium
ADD ⊕
6.5.3 Van der Waals Radius
Francium
200.00 pm
Rank: 28 (Overall)
200.00 pm
Rank: 28 (Overall)
Zinc
ADD ⊕
6.6 Atomic Weight
Tennessine
52.00 amu
Rank: 76 (Overall)
47.87 amu
Rank: 78 (Overall)
Lithium
ADD ⊕
6.7 Atomic Volume
Cesium
7.23 cm3/mol
Rank: 60 (Overall)
10.64 cm3/mol
Rank: 46 (Overall)
Manganese
ADD ⊕
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
Platinum
170.00 (-eV)
Rank: 4 (Overall)
95.20 (-eV)
Rank: 10 (Overall)
Francium
ADD ⊕
6.10 Lattice Constant
Manganese
291.00 pm
Rank: 62 (Overall)
295.08 pm
Rank: 61 (Overall)
Beryllium
ADD ⊕
6.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
6.12 Lattice C/A Ratio
Cadmium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Beryllium
ADD ⊕
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
Hassium
7.19 g/cm3
Rank: 58 (Overall)
4.51 g/cm3
Rank: 70 (Overall)
Lithium
ADD ⊕
7.1.2 Density When Liquid (at m.p.)
Osmium
6.30 g/cm3
Rank: 40 (Overall)
4.11 g/cm3
Rank: 49 (Overall)
Lithium
ADD ⊕
7.2 Tensile Strength
Iron
689.00 MPa
Rank: 7 (Overall)
434.00 MPa
Rank: 9 (Overall)
Indium
ADD ⊕
7.3 Viscosity
Mercury
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
Strontium
0.00 (Pa)
Rank: 24 (Overall)
Not Available
Rank: N/A (Overall)
Cerium
ADD ⊕
7.4.2 Vapor Pressure at 2000 K
Chromium
774.00 (Pa)
Rank: 1 (Overall)
0.98 (Pa)
Rank: 14 (Overall)
Tungsten
ADD ⊕
7.5 Elasticity properties
7.5.1 Shear Modulus
Osmium
115.00 GPa
Rank: 9 (Overall)
44.00 GPa
Rank: 17 (Overall)
Potassium
ADD ⊕
7.5.2 Bulk Modulus
Osmium
160.00 GPa
Rank: 11 (Overall)
110.00 GPa
Rank: 15 (Overall)
Cesium
ADD ⊕
7.5.3 Young's Modulus
Iridium
279.00 GPa
Rank: 8 (Overall)
116.00 GPa
Rank: 18 (Overall)
Cesium
ADD ⊕
7.6 Poisson Ratio
Gallium
0.21
Rank: 32 (Overall)
0.32
Rank: 12 (Overall)
Beryllium
ADD ⊕
7.7 Other Mechanical Properties
NA
Ductile
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
Cobalt
7.19
Rank: 46 (Overall)
4,500.00
Rank: 1 (Overall)
Lithium
ADD ⊕
8.1.2 Magnetic Ordering
Antiferromagnetic
Paramagnetic
8.1.3 Permeability
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
ADD ⊕
8.1.4 Susceptibility
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
ADD ⊕
8.2 Electrical Properties
8.2.1 Electrical Property
NA
Poor Conductor
8.2.2 Resistivity
Mercury
125.00 nΩ·m
Rank: 27 (Overall)
420.00 nΩ·m
Rank: 12 (Overall)
Thallium
ADD ⊕
8.2.3 Electrical Conductivity
Silver
0.08 106/cm Ω
Rank: 25 (Overall)
0.02 106/cm Ω
Rank: 42 (Overall)
Plutonium
ADD ⊕
8.2.4 Electron Affinity
Gold
64.30 kJ/mol
Rank: 15 (Overall)
7.60 kJ/mol
Rank: 37 (Overall)
Mercury
ADD ⊕
9 Thermal
9.1 Specific Heat
Lithium
0.45 J/(kg K)
Rank: 12 (Overall)
0.52 J/(kg K)
Rank: 9 (Overall)
Americium
ADD ⊕
9.2 Molar Heat Capacity
Americium
23.35 J/mol·K
Rank: 55 (Overall)
25.06 J/mol·K
Rank: 44 (Overall)
Beryllium
ADD ⊕
9.3 Thermal Conductivity
Silver
93.90 W/m·K
Rank: 17 (Overall)
21.90 W/m·K
Rank: 43 (Overall)
Neptunium
ADD ⊕
9.4 Critical Temperature
Lithium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Ytterbium
ADD ⊕
9.5 Thermal Expansion
Cesium
4.90 µm/(m·K)
Rank: 57 (Overall)
8.60 µm/(m·K)
Rank: 45 (Overall)
Tungsten
ADD ⊕
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
Tungsten
348.80 kJ/mol
Rank: 24 (Overall)
429.00 kJ/mol
Rank: 15 (Overall)
Zinc
ADD ⊕
9.6.2 Enthalpy of Fusion
Tungsten
15.31 kJ/mol
Rank: 20 (Overall)
15.48 kJ/mol
Rank: 19 (Overall)
Cesium
ADD ⊕
9.6.3 Enthalpy of Atomization
Tungsten
397.50 kJ/mol
Rank: 21 (Overall)
468.60 kJ/mol
Rank: 15 (Overall)
Mercury
ADD ⊕
9.7 Standard Molar Entropy
Protactinium
23.80 J/mol.K
Rank: 57 (Overall)
27.30 J/mol.K
Rank: 56 (Overall)
Beryllium
ADD ⊕
Let Others Know
×