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Neptunium
Neptunium




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Physical Properties of Neptunium

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Physical

Melting Point

640.00 °C
Rank: 62 (Overall)
-38.83 3410
👆🏻

Boiling Point

3,902.00 °C
Rank: 13 (Overall)
0 5660
👆🏻

Appearance

Physical State

Solid

Color

Silver

Luster

Metallic

Hardness

Mohs Hardness

6.00
Rank: 6 (Overall)
0.2 8.5
👆🏻

Brinell Hardness

622.00 MPa
Rank: 23 (Overall)
0.14 3490
👆🏻

Vickers Hardness

640.00 MPa
Rank: 23 (Overall)
0 3920
👆🏻

Speed of Sound

2,260.00 m/s
Rank: 58 (Overall)
818 16200
👆🏻

Optical Properties

Refractive Index

1.30
Rank: 43 (Overall)
0.155 3.41
👆🏻

Reflectivity

64.00 %
Rank: 19 (Overall)
5 97
👆🏻

Allotropes

No - Actinide Series Metals has it !

α Allotropes

-

β Allotropes

-

γ Allotropes

-