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Neptunium

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Uranium

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Neptunium

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Uranium

Physical Properties of Neptunium and Uranium

Neptunium Electron Configuration

Neptunium

Uranium Metal

Uranium

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1 Physical

1.1 Melting Point

640.00 °C1,132.00 °C

27 3410

1.2 Boiling Point

3,902.00 °C3,818.00 °C

147 5660

1.4 Appearance

1.4.1 Physical State

Solid

Solid

1.4.2 Color

Silver

Silvery Gray

1.4.3 Luster

Metallic

Metallic

1.5 Hardness

1.5.1 Mohs Hardness

NA6.00

0.2 8.5

1.5.3 Brinell Hardness

NA2,350.00 MPa

0.14 3490

1.5.5 Vickers Hardness

NA1,960.00 MPa

121 3430

1.7 Speed of Sound

NA3,155.00 m/s

818 16200

1.8 Optical Properties

1.8.1 Refractive Index

NANA

1.000933 1.7229

1.9.1 Reflectivity

NANA

58 97

1.10 Allotropes

✔ ✘

✔ ✘

1.10.1 α Allotropes

Not Available

Not Available

1.10.2 β Allotropes

Not Available

Not Available

1.10.3 γ Allotropes

Not Available

Not Available

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