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Cobalt

☒

Technetium

☒

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Cobalt

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Technetium

Physical Properties of Cobalt and Technetium

Cobalt Metal

Cobalt

Technetium Metal

Technetium

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Physical

Melting Point

Boiling Point

Physical State

Color

Luster

Mohs Hardness

Brinell Hardness

Vickers Hardness

Speed of Sound

Refractive Index

Reflectivity

Allotropes

α Allotropes

β Allotropes

γ Allotropes

1,495.00 °C

2,870.00 °C

Solid

Gray

Metallic

5.00

470.00 MPa

1,043.00 MPa

4,720.00 m/s

2.50

67.00 %

✔✘

α-Cobalt

β-Cobalt

-

2,200.00 °C

4,877.00 °C

Solid

Shiny Gray

-

2.25

550.00 MPa

500.00 MPa

16,200.00 m/s

1.90

35.00 %

✔✘

-

-

-

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