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Cobalt
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Chromium
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Actinide Series
Lanthanide Series
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Cobalt
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Chromium
Physical Properties of Cobalt and Chromium
Cobalt
Chromium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Physical
Melting Point
1,495.00 °C
1,857.00 °C
-38.83
3410
👆🏻
Boiling Point
2,870.00 °C
2,672.00 °C
0
5660
👆🏻
Appearance
Physical State
Solid
Solid
Color
Gray
Silver
Luster
Metallic
Metallic
Hardness
Mohs Hardness
5.00
8.50
0.2
8.5
👆🏻
Brinell Hardness
470.00 MPa
687.00 MPa
0.14
3490
👆🏻
Vickers Hardness
1,043.00 MPa
1,060.00 MPa
0
3920
👆🏻
Speed of Sound
4,720.00 m/s
5,940.00 m/s
818
16200
👆🏻
Optical Properties
Refractive Index
2.50
2.97
0.155
3.41
👆🏻
Reflectivity
67.00 %
70.00 %
5
97
👆🏻
Allotropes
✔
✘
✔
✘
α Allotropes
α-Cobalt
-
β Allotropes
β-Cobalt
-
γ Allotropes
-
-
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Tungsten
Iridium
Molybdenum
Rhodium
Cadmium
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Vanadium
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Uses
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Osmium
Periodic ...
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Facts
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Uses
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Zirconium
Periodic ...
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Chromium vs Tungsten
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Chromium vs Iridium
Periodic ...
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Chromium vs Molybdenum
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Uses
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