Nepçhunium
| Ta fys bentyn rish kemmig er y duillag shoh. Jeeagh er Soilshaghey magh:Kemmig my vel feme ayd er cooney. |
She bunstoo goul-rooragh eh nepçhunium. She yn trimmid breneenagh ta echey ny (237) g·mol-1. Ta earroo breneenagh 93 as cowrey Np er.
  | |
| Stoo kemmigagh | bunstoo kemmigagh |
|---|---|
| Nepçhunium ayns taabyl ny bunstooghyn | |
| Cowrey kemmigagh | Np |
| Earroo breneenagh | 93 |
| Possan as çhymcheayrt | çhymcheayrt 7 aghtineed |
| Troyn fishigagh | |
| Glooid | 19.38 g/cm³ |
| Lectro-yiooldaght | 1.36 |
| Goull eeaneagh | 1.01, 0.87, 0.75 as 0.72 |
| Shennaghys | |
| Feddynit magh ec | Edwin McMillan (en)  as Philip Abelson (mul) |
| Feddynys | 1940 |
| Epennym | Neptioon |
 | |
| She bun ta'n art shoh. Cur rish, son foays y yannoo da Wikipedia. |