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Nickel

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Tantalum

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Nickel

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Tantalum

Physical Properties of Nickel and Tantalum

Nickel Metal

Nickel

Tantalum Metal

Tantalum

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1 Physical

1.1 Melting Point

1,453.00 °C2,996.00 °C

27 3410

1.2 Boiling Point

2,732.00 °C5,425.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silver

Gray Blue

1.3.3 Luster

Metallic

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

4.006.50

0.2 8.5

1.4.2 Brinell Hardness

667.00 MPa440.00 MPa

0.14 3490

1.4.3 Vickers Hardness

638.00 MPa870.00 MPa

121 3430

1.5 Speed of Sound

4,900.00 m/s3,400.00 m/s

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

72.00 %78.00 %

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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