Neptunium (β phase)
allotrope
Np
An intermediate crystal form of the rare actinide metal neptunium
← Allotrope of Neptunium
A crystalline allotrope of Neptunium (space group P m c n), sourced from the Crystallography Open Database (COD 9008585).
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Crystallography
| Catalogue identity | Neptunium — P m c n - P m c n |
| Formula | Np |
| Crystal system | orthorhombic |
| Space group | P m c n |
| Lattice (a, b, c) Å | 4.723, 4.887, 6.663 |
| Angles (α, β, γ) ° | 90, 90, 90 |
| Density (g/cm³) | 20.472 |
| Determination | Experimental (measured) |
Structure data: Crystallography Open Database · Public domain (CC0)
