Elements · ← U Uranium · Pu Plutonium →
Np Neptunium
Basic facts
| Symbol | Np |
|---|---|
| Atomic number | 93 |
| Atomic mass | 237.048172(no standard atomic weight: the element has no stable isotopes or characteristic natural composition; PubChem lists this isotope mass) |
| Group | none (actinide series) |
| Period | 7 |
| Block | f-block |
| Category | Actinide |
| Standard state | Solid |
| Discovered | 1940 |
Source: PubChem, Neptunium (periodic table data, retrieved 2026-10-19). Group and period follow the standard 18-column periodic table.
Biotech uses & experiments
No verified biotech applications listed yet.