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Niobium

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Plutonium

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Niobium

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Plutonium

Physical Properties of Niobium and Plutonium

Niobium Metal

Niobium

Plutonium Metal

Plutonium

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1 Physical

1.1 Melting Point

2,468.00 °C639.50 °C

27 3410

1.2 Boiling Point

2,468.00 °C3,235.00 °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

NA

1.4 Hardness

1.4.1 Mohs Hardness

6.00NA

0.2 8.5

1.4.2 Brinell Hardness

735.00 MPaNA

0.14 3490

1.4.3 Vickers Hardness

870.00 MPaNA

121 3430

1.5 Speed of Sound

3,480.00 m/s2,260.00 m/s

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

NANA

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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