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Iron

☒

Terbium

☒

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Iron

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Terbium

Physical Properties of Iron and Terbium

Iron Metal

Iron

Terbium Metal

Terbium

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1 Physical

1.1 Melting Point

1,535.00 °C1,356.00 °C

27 3410

1.2 Boiling Point

2,750.00 °C3,123.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Gray

Silvery White

1.3.3 Luster

Metallic

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

4.00NA

0.2 8.5

1.4.2 Brinell Hardness

200.00 MPa677.00 MPa

0.14 3490

1.4.3 Vickers Hardness

608.00 MPa863.00 MPa

121 3430

1.5 Speed of Sound

5,120.00 m/s2,620.00 m/s

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

65.00 %NA

58 97

1.7 Allotropes

✔ ✘

✔ ✘

1.7.1 α Allotropes

Ferrite (alpha Iron)

Not Available

1.7.2 β Allotropes

beta Iron

Not Available

1.7.3 γ Allotropes

gamma Iron

Not Available

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