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Cerium Cobalt Comparison

Cerium
Cobalt
Cobalt Cerium comparison


Periodic Table
Symbol
Ce  
Co  
Group Number
3  
15
9  
9
Period Number
6  
4  
Block
f block  
d block  
Element Family
Lanthanide  
Transition Metal  
CAS Number
7440451  
99+
7440484  
38
Space Group Name
P63/mmc  
P63/mmc  
Space Group Number
194.00  
7
194.00  
7
Facts
Interesting Facts
  • Cerium is a rare earth metal but still it is not rare at all.
  • It’s non-toxic compound Cerium sulfide has a rich red color and it is used as a pigment.
  • Cerium metal is also used in Flat screen TVs, light bulb, floodlights, etc.
  
  • 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.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Found in Compounds, Mining, Ores of Minerals  
History
  
  
Who Discovered
Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger  
Georg Brandt  
Discovery
In 1803  
In 1732  
Abundance
  
  
Abundance In Universe
0.00 %  
17
0.00 %  
10
Abundance In Sun
0.00 %  
23
0.00 %  
9
Abundance In Meteorites
0.00 %  
27
0.06 %  
10
Abundance In Earth's Crust
0.01 %  
18
0.00 %  
21
Abundance In Oceans
0.00 %  
33
0.00 %  
20
Abundance In Humans
0.00 %  
24
0.00 %  
20
Uses
Uses & Benefits
  • It is used to include flints for cigarette lighters.
  • Its compound Cerium (Ill) Oxide is used as a catalyst; it is put inside the walls of the oven as it prevents from the buildup of cooking residues.
  
  • 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.
  
Industrial Uses
Chemical Industry  
Chemical Industry, Electrical Industry, Electronic Industry  
Medical Uses
Medical Research  
Pharmaceutical Industry  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Moderately Toxic  
Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
30
0.04 Blood/mg dm-3  
18
In Bone
2.70 p.p.m.  
14
0.04 p.p.m.  
32
Physical
Melting Point
795.00 °C  
99+
1,495.00 °C  
29
Boiling Point
3,257.00 °C  
24
2,870.00 °C  
35
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Gray  
Luster
Lustrous  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
5.00  
8
Brinell Hardness
186.00 MPa  
99+
470.00 MPa  
31
Vickers Hardness
210.00 MPa  
99+
1,043.00 MPa  
18
Speed of Sound
2,100.00 m/s  
99+
4,720.00 m/s  
18
Optical Properties
  
  
Refractive Index
2.20  
9
2.50  
5
Reflectivity
68.00 %  
15
67.00 %  
16
Allotropes
No  
Yes  
α Allotropes
-  
α-Cobalt  
β Allotropes
-  
β-Cobalt  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ce  
Co  
Isotopes
  
  
Known Isotopes
30  
9
26  
13
Electronegativity
  
  
Pauling Electronegativity
1.12  
99+
1.88  
13
Sanderson Electronegativity
1.12  
37
2.56  
1
Allred Rochow Electronegativity
1.08  
32
1.70  
6
Mulliken-Jaffe Electronegativity
1.12  
99+
1.88  
14
Allen Electronegativity
1.12  
99+
1.84  
13
Electropositivity
  
  
Pauling Electropositivity
2.88  
11
2.12  
99+
Ionization Energies
  
  
1st Energy Level
534.40 kJ/mol  
99+
760.40 kJ/mol  
19
2nd Energy Level
1,050.00 kJ/mol  
99+
1,648.00 kJ/mol  
32
3rd Energy Level
1,949.00 kJ/mol  
99+
3,232.00 kJ/mol  
22
4th Energy Level
3,547.00 kJ/mol  
99+
4,950.00 kJ/mol  
29
5th Energy Level
6,325.00 kJ/mol  
37
7,670.00 kJ/mol  
18
6th Energy Level
7,490.00 kJ/mol  
38
9,840.00 kJ/mol  
18
7th Energy level
5,340.00 kJ/mol  
99+
12,440.00 kJ/mol  
11
8th Energy Level
5,340.00 kJ/mol  
99+
15,230.00 kJ/mol  
12
9th Energy Level
5,340.00 kJ/mol  
99+
17,959.00 kJ/mol  
13
10th Energy Level
5,340.00 kJ/mol  
99+
26,570.00 kJ/mol  
7
11th Energy Level
5,340.00 kJ/mol  
99+
29,400.00 kJ/mol  
8
12th Energy Level
5,340.00 kJ/mol  
99+
32,400.00 kJ/mol  
30
13th Energy Level
5,650.00 kJ/mol  
99+
36,600.00 kJ/mol  
8
14th Energy Level
5,340.00 kJ/mol  
99+
39,700.00 kJ/mol  
9
15th Energy Level
53,400.00 kJ/mol  
99+
42,800.00 kJ/mol  
99+
16th Energy Level
53,400.00 kJ/mol  
99+
49,396.00 kJ/mol  
99+
17th Energy Level
534.40 kJ/mol  
99+
52,737.00 kJ/mol  
13
18th Energy Level
5,340.00 kJ/mol  
99+
134,810.00 kJ/mol  
1
19th Energy Level
534.40 kJ/mol  
99+
145,170.00 kJ/mol  
2
20th Energy Level
534.00 kJ/mol  
99+
154,700.00 kJ/mol  
4
21st Energy Level
5,346.00 kJ/mol  
24
167,400.00 kJ/mol  
4
22nd Energy Level
594.00 kJ/mol  
99+
178,100.00 kJ/mol  
3
23rd Energy Level
5,346.00 kJ/mol  
26
189,300.00 kJ/mol  
3
24th Energy Level
565.50 kJ/mol  
99+
760.40 kJ/mol  
17
25th Energy Level
534.40 kJ/mol  
99+
760.40 kJ/mol  
17
26th Energy Level
565.50 kJ/mol  
99+
760.40 kJ/mol  
17
27th Energy Level
565.50 kJ/mol  
99+
760.40 kJ/mol  
16
28th Energy Level
565.50 kJ/mol  
99+
760.40 kJ/mol  
22
29th Energy Level
565.50 kJ/mol  
99+
760.40 kJ/mol  
23
30th Energy Level
594.00 kJ/mol  
99+
760.40 kJ/mol  
17
Electrochemical Equivalent
1.74 g/amp-hr  
99+
1.10 g/amp-hr  
99+
Electron Work Function
2.84 eV  
99+
5.00 eV  
9
Other Chemical Properties
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Chemical Stability, Ionization  
Atomic
Atomic Number
58  
99+
22  
99+
Electron Configuration
[Xe] 4f1 5d1 6s2  
[Ar] 3d2 4s2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
DHCP-Crystal-Structure-of-Cerium.jpg#100  
HCP-Crystal-Structure-of-Cobalt.jpg#100  
Atom
  
  
Number of Protons
58  
99+
22  
99+
Number of Neutrons
82  
99+
26  
99+
Number of Electrons
58  
99+
22  
99+
Radius of an Atom
  
  
Atomic Radius
181.80 pm  
14
147.00 pm  
36
Covalent Radius
204.00 pm  
8
160.00 pm  
32
Van der Waals Radius
235.00 pm  
21
200.00 pm  
35
Atomic Weight
140.12 amu  
99+
47.87 amu  
99+
Atomic Volume
20.67 cm3/mol  
27
10.64 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Lanthanum
  
Iron
  
Next Element
Praseodymium
  
Nickel
  
Valence Electron Potential
41.78 (-eV)  
99+
95.20 (-eV)  
10
Lattice Constant
362.00 pm  
38
295.08 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.59  
31
1.26  
99+
Mechanical
Density
  
  
Density At Room Temperature
6.77 g/cm3  
99+
4.51 g/cm3  
99+
Density When Liquid (at m.p.)
6.55 g/cm3  
99+
4.11 g/cm3  
99+
Tensile Strength
270.00 MPa  
17
434.00 MPa  
10
Viscosity
0.00  
23
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
36
0.00 (Pa)  
22
Vapor Pressure at 2000 K
1.04 (Pa)  
13
0.98 (Pa)  
14
Elasticity properties
  
  
Shear Modulus
13.50 GPa  
99+
44.00 GPa  
17
Bulk Modulus
21.50 GPa  
99+
110.00 GPa  
15
Young's Modulus
33.60 GPa  
99+
116.00 GPa  
20
Poisson Ratio
0.24  
27
0.32  
12
Other Mechanical Properties
Ductile, Malleable  
Ductile  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
6.77  
99+
4,500.00  
1
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
7
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
3
Electrical Properties
  
  
Electrical Property
Conductor  
Poor Conductor  
Resistivity
828.00 nΩ·m  
3
420.00 nΩ·m  
12
Electrical Conductivity
0.01 106/cm Ω  
99+
0.02 106/cm Ω  
99+
Electron Affinity
50.00 kJ/mol  
26
7.60 kJ/mol  
99+
Thermal
Specific Heat
0.19 J/(kg K)  
33
0.52 J/(kg K)  
9
Molar Heat Capacity
26.94 J/mol·K  
30
25.06 J/mol·K  
99+
Thermal Conductivity
11.30 W/m·K  
99+
21.90 W/m·K  
99+
Critical Temperature
1,071.00 K  
99+
1,768.00 K  
32
Thermal Expansion
6.30 µm/(m·K)  
99+
8.60 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
414.00 kJ/mol  
22
429.00 kJ/mol  
20
Enthalpy of Fusion
5.46 kJ/mol  
99+
15.48 kJ/mol  
19
Enthalpy of Atomization
381.00 kJ/mol  
31
468.60 kJ/mol  
20
Standard Molar Entropy
72.00 J/mol.K  
12
27.30 J/mol.K  
99+
Summary >>
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