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Terbium

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Cobalt

☒

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Terbium

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Cobalt

Physical Properties of Terbium and Cobalt

Terbium Metal

Terbium

Cobalt Metal

Cobalt

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1 Physical

1.1 Melting Point

1,356.00 °C1,495.00 °C

27 3410

1.2 Boiling Point

3,123.00 °C2,870.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silvery White

Gray

1.3.3 Luster

Metallic

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

NA5.00

0.2 8.5

1.4.2 Brinell Hardness

677.00 MPa470.00 MPa

0.14 3490

1.4.3 Vickers Hardness

863.00 MPa1,043.00 MPa

121 3430

1.5 Speed of Sound

2,620.00 m/s4,720.00 m/s

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

NA67.00 %

58 97

1.7 Allotropes

✔ ✘

✔ ✘

1.7.1 α Allotropes

Not Available

α-Cobalt

1.7.2 β Allotropes

Not Available

β-Cobalt

1.7.3 γ Allotropes

Not Available

Not Available

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