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Tantalum

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Lutetium

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Tantalum

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Lutetium

Physical Properties of Tantalum and Lutetium

Tantalum Metal

Tantalum

Lutetium Metal

Lutetium

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1 Physical

1.1 Melting Point

2,996.00 °C1,652.00 °C

27 3410

1.2 Boiling Point

5,425.00 °C3,402.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Gray Blue

Silvery White

1.3.3 Luster

Metallic

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

6.50NA

0.2 8.5

1.4.2 Brinell Hardness

440.00 MPa893.00 MPa

0.14 3490

1.4.3 Vickers Hardness

870.00 MPa1,160.00 MPa

121 3430

1.5 Speed of Sound

3,400.00 m/sNA

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

78.00 %NA

58 97

1.7 Allotropes

✔ ✘

✔ ✘

1.7.1 α Allotropes

Not Available

Not Available

1.7.2 β Allotropes

Not Available

Not Available

1.7.3 γ Allotropes

Not Available

Not Available

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