Protactinium (Tetragonal)
allotrope
Pa
The body-centred tetragonal crystal structure of this rare actinide metal
← Allotrope of Protactinium
A crystalline allotrope of Protactinium (space group I 4/m m m), sourced from the Crystallography Open Database (COD 2310022).
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Crystallography
| Catalogue identity | Protactinium — I 4/m m m - I 4/m m m |
| Formula | Pa |
| Crystal system | tetragonal |
| Space group | I 4/m m m |
| Lattice (a, b, c) Å | 3.925, 3.925, 3.238 |
| Angles (α, β, γ) ° | 90, 90, 90 |
| Density (g/cm³) | 15.68431266152766 |
| Determination | Experimental (measured) |
Structure data: Crystallography Open Database · Public domain (CC0)