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Cobalt
Cobalt

Strontium
Strontium



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Cobalt Strontium Comparison

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1 Periodic Table
1.1 Symbol
Co
Sr
1.2 Group Number
92
Gadolinium Metal
0 17
1.3 Period Number
45
Lithium Metal
2 7
1.4 Block
d block
s block
1.5 Element Family
Transition Metal
Alkaline Earth
1.6 CAS Number
74404847440246
Aluminium Metal
7429905 54386242
1.7 Space Group Name
P63/mmc
Fm_ 3m
1.8 Space Group Number
194.00225.00
Plutonium Metal
11 229
2 Facts
2.1 Interesting Facts
  • 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.
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
2.2 Sources
Found in Compounds, Mining, Ores of Minerals
Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Georg Brandt
William Cruickshank
2.3.2 Discovery
In 1732
In 1787
2.4 Abundance
2.4.1 Abundance In Universe
3 * 10-4 %4 * 10-6 %
Thallium Metal
5E-09 0.11
2.4.2 Abundance In Sun
~0.0004 %~0.000005 %
Beryllium Metal
1E-08 0.1
2.4.3 Abundance In Meteorites
0.06 %0.00 %
Gold Metal
1.7E-07 22
2.4.4 Abundance In Earth's Crust
0.00 %0.04 %
Radium Metal
9.9E-12 8.1
2.4.5 Abundance In Oceans
0.00 %0.00 %
Protactinium Metal
2E-23 1.1
2.4.6 Abundance In Humans
0.00 %0.00 %
Radium Metal
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • 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.
  • Strontium metal is used to producing ferrite magnets as well as refining zinc.
  • By-product of nuclear reactors called Strontium-90 is a radioactive isotope; it is absorbed by tissues and destroys bone marrow and cancer growth.
3.1.1 Industrial Uses
Chemical Industry, Electrical Industry, Electronic Industry
Ammunition Industry, Chemical Industry
3.1.2 Medical Uses
Pharmaceutical Industry
NA
3.1.3 Other Uses
Alloys
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Toxic
Non Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
0.04 Blood/mg dm-30.03 Blood/mg dm-3
Plutonium Metal
0 1970
3.2.4 In Bone
0.04 p.p.m.140.00 p.p.m.
Plutonium Metal
0 170000
4 Physical
4.1 Melting Point
1,495.00 °C769.00 °C
Francium Metal
27 3410
4.2 Boiling Point
2,870.00 °C1,384.00 °C
Flerovium Metal
147 5660
1.2 Appearance
1.2.1 Physical State
Solid
Solid
1.2.2 Color
Gray
Silvery White
1.2.3 Luster
Metallic
Metallic
1.3 Hardness
1.3.1 Mohs Hardness
5.001.50
Cesium Metal
0.2 8.5
1.4.1 Brinell Hardness
470.00 MPaNA
Cesium Metal
0.14 3490
1.4.2 Vickers Hardness
1,043.00 MPaNA
Palladium Metal
121 3430
1.7 Speed of Sound
4,720.00 m/sNA
Thallium Metal
818 16200
1.8 Optical Properties
1.8.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
1.8.2 Reflectivity
67.00 %NA
Molybdenum Metal
58 97
1.9 Allotropes
1.9.1 α Allotropes
α-Cobalt
Not Available
1.9.2 β Allotropes
β-Cobalt
Not Available
1.9.3 γ Allotropes
Not Available
Not Available
2 Chemical
2.1 Chemical Formula
Co
Sr
2.2 Isotopes
2.2.1 Known Isotopes
2627
Tennessine Metal
0 38
2.4 Electronegativity
2.4.1 Pauling Electronegativity
1.880.95
Francium Metal
0.7 2.54
2.4.2 Sanderson Electronegativity
2.560.72
Cesium Metal
0.22 2.56
2.5.3 Allred Rochow Electronegativity
1.700.99
Cesium Metal
0.86 1.82
2.6.4 Mulliken-Jaffe Electronegativity
NA1.00
Cesium Metal
0.62 2.48
2.6.5 Allen Electronegativity
1.840.96
Cesium Metal
0.659 2.7
2.7 Electropositivity
2.7.1 Pauling Electropositivity
2.123.05
Gold Metal
1.46 3.3
2.8 Ionization Energies
2.8.1 1st Energy Level
760.40 kJ/mol549.50 kJ/mol
Cesium Metal
375.7 26130
2.8.2 2nd Energy Level
1,648.00 kJ/mol1,064.20 kJ/mol
Ruthenium Metal
710.2162 28750
2.8.3 3rd Energy Level
3,232.00 kJ/mol4,138.00 kJ/mol
Osmium Metal
1600 34230
2.8.4 4th Energy Level
4,950.00 kJ/mol5,500.00 kJ/mol
Thorium Metal
2780 37066
2.8.5 5th Energy Level
7,670.00 kJ/mol6,910.00 kJ/mol
Dubnium Metal
4305.2 97510
2.8.6 6th Energy Level
9,840.00 kJ/mol8,760.00 kJ/mol
Seaborgium Metal
5715.8 105800
2.8.7 7th Energy level
12,440.00 kJ/mol10,230.00 kJ/mol
Bohrium Metal
7226.8 114300
2.8.8 8th Energy Level
15,230.00 kJ/mol11,800.00 kJ/mol
Hassium Metal
8857.4 125300
2.8.9 9th Energy Level
17,959.00 kJ/mol15,600.00 kJ/mol
Yttrium Metal
14110 134700
2.8.10 10th Energy Level
26,570.00 kJ/mol17,100.00 kJ/mol
Copper
17100 144300
2.8.11 11th Energy Level
29,400.00 kJ/mol31,270.00 kJ/mol
Yttrium Metal
19900 169988
2.8.12 12th Energy Level
32,400.00 kJ/molNA
Molybdenum Metal
22219 189368
2.8.13 13th Energy Level
36,600.00 kJ/molNA
Molybdenum Metal
26930 76015
2.8.14 14th Energy Level
39,700.00 kJ/molNA
Molybdenum Metal
29196 86450
2.8.15 15th Energy Level
42,800.00 kJ/molNA
Manganese Metal
41987 97510
2.8.16 16th Energy Level
49,396.00 kJ/molNA
Iron Metal
47206 109480
2.8.17 17th Energy Level
52,737.00 kJ/molNA
Copper
52737 122200
2.8.18 18th Energy Level
134,810.00 kJ/molNA
Nickel Metal
58570 134810
2.8.19 19th Energy Level
145,170.00 kJ/molNA
Copper Metal
64702 148700
2.8.20 20th Energy Level
154,700.00 kJ/molNA
Molybdenum Metal
80400 171200
2.8.21 21st Energy Level
167,400.00 kJ/molNA
Molybdenum Metal
87000 179100
2.8.22 22nd Energy Level
178,100.00 kJ/molNA
Molybdenum Metal
93400 184900
2.8.23 23rd Energy Level
189,300.00 kJ/molNA
Molybdenum Metal
98420 198800
2.8.24 24th Energy Level
NANA
Molybdenum Metal
104400 195200
2.8.25 25th Energy Level
NANA
Molybdenum Metal
121900 121900
2.8.26 26th Energy Level
NANA
Molybdenum Metal
127700 127700
2.8.27 27th Energy Level
NANA
Molybdenum Metal
133800 133800
2.8.28 28th Energy Level
NANA
Molybdenum Metal
139800 139800
2.8.29 29th Energy Level
NANA
Molybdenum Metal
148100 148100
2.8.30 30th Energy Level
NANA
Molybdenum Metal
154500 154500
2.9 Electrochemical Equivalent
1.10 g/amp-hr1.64 g/amp-hr
Beryllium Metal
0.16812 8.3209
2.10 Electron Work Function
5.00 eV2.59 eV
Cesium Metal
2.14 5.65
2.11 Other Chemical Properties
Chemical Stability, Ionization
Ionization, Radioactive Isotopes, Radioactivity, Solubility
3 Atomic
3.1 Atomic Number
2238
Lithium Metal
3 117
3.2 Electron Configuration
[Ar] 3d2 4s2
[Kr] 5s2
3.3 Crystal Structure
Hexagonal Close Packed (HCP)
Face Centered Cubic (FCC)
3.3.1 Crystal Lattice
3.4 Atom
3.4.1 Number of Protons
2238
Lithium Metal
3 117
3.4.2 Number of Neutrons
2650
Lithium Metal
4 184
3.4.3 Number of Electrons
2238
Lithium Metal
3 117
3.5 Radius of an Atom
3.5.1 Atomic Radius
147.00 pm215.00 pm
Beryllium Metal
112 265
3.5.2 Covalent Radius
160.00 pm195.00 pm
Beryllium Metal
96 260
3.5.3 Van der Waals Radius
200.00 pm249.00 pm
Zinc Metal
139 348
3.6 Atomic Weight
47.87 amu87.62 amu
Lithium Metal
6.94 294
3.7 Atomic Volume
10.64 cm3/mol33.70 cm3/mol
Manganese Metal
1.39 71.07
3.8 Adjacent Atomic Numbers
3.8.1 Previous Element
3.8.2 Next Element
3.9 Valence Electron Potential
95.20 (-eV)25.70 (-eV)
Francium Metal
8 392.42
3.10 Lattice Constant
295.08 pm608.49 pm
Beryllium Metal
228.58 891.25
3.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
3.12 Lattice C/A Ratio
NANA
Beryllium Metal
1.567 1.886
4 Mechanical
4.1 Density
4.1.1 Density At Room Temperature
4.51 g/cm32.64 g/cm3
Lithium Metal
0.534 40.7
4.1.2 Density When Liquid (at m.p.)
4.11 g/cm32.38 g/cm3
Lithium Metal
0.512 20
4.2 Tensile Strength
434.00 MPaNA
Indium Metal
2.5 11000
4.3 Viscosity
NANA
Mercury Metal
0.001526 0.001526
4.4 Vapor Pressure
4.4.1 Vapor Pressure at 1000 K
NA121.00 (Pa)
Cerium Metal
2.47E-11 121
4.4.2 Vapor Pressure at 2000 K
0.98 (Pa)NA
Tungsten Metal
2.62E-10 774
4.5 Elasticity properties
4.5.1 Shear Modulus
44.00 GPa6.03 GPa
Potassium Metal
1.3 222
4.5.2 Bulk Modulus
110.00 GPaNA
Cesium Metal
1.6 462
4.5.3 Young's Modulus
116.00 GPa15.70 GPa
Cesium Metal
1.7 528
4.6 Poisson Ratio
0.320.28
Beryllium Metal
0.032 0.47
4.7 Other Mechanical Properties
Ductile
NA
5 Magnetic
5.1 Magnetic Characteristics
5.1.1 Specific Gravity
4,500.002.64
Lithium Metal
0.53 4500
5.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
5.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
5.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
5.2 Electrical Properties
5.2.1 Electrical Property
Poor Conductor
NA
5.2.2 Resistivity
420.00 nΩ·m132.00 nΩ·m
Thallium Metal
0.18 961
5.2.3 Electrical Conductivity
0.02 106/cm Ω0.08 106/cm Ω
Plutonium Metal
0.00666 0.63
5.2.4 Electron Affinity
7.60 kJ/mol5.03 kJ/mol
Mercury Metal
0 222.8
6 Thermal
6.1 Specific Heat
0.52 J/(kg K)0.30 J/(kg K)
Americium Metal
0.11 3.6
6.2 Molar Heat Capacity
25.06 J/mol·K26.40 J/mol·K
Beryllium Metal
16.443 62.7
6.3 Thermal Conductivity
21.90 W/m·K35.40 W/m·K
Neptunium Metal
6.3 429
6.4 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
6.5 Thermal Expansion
8.60 µm/(m·K)22.50 µm/(m·K)
Tungsten Metal
4.5 97
6.6 Enthalpy
6.6.1 Enthalpy of Vaporization
429.00 kJ/mol150.00 kJ/mol
Zinc Metal
7.32 799.1
6.6.2 Enthalpy of Fusion
15.48 kJ/mol9.16 kJ/mol
Cesium Metal
2.1 35.23
6.6.3 Enthalpy of Atomization
468.60 kJ/mol163.20 kJ/mol
Mercury Metal
61.5 837
6.7 Standard Molar Entropy
27.30 J/mol.K55.00 J/mol.K
Beryllium Metal
9.5 198.1