Promaiçhum
| Ta fys bentyn rish kemmig er y duillag shoh. Jeeagh er Soilshaghey magh:Kemmig my vel feme ayd er cooney. |
She bunstoo eh promaiçhum. She yn trimmid breneenagh ta echey ny [145] g·mol−1. Ta earroo breneenagh 61 as cowrey Pm er.
  | |
| Stoo kemmigagh | bunstoo kemmigagh as bunstoo taahit |
|---|---|
| Promaiçhum ayns taabyl ny bunstooghyn | |
| Cowrey kemmigagh | Pm |
| Earroo breneenagh | 61 |
| Possan as çhymcheayrt | lantaneed çhymcheayrt 6 |
| Troyn fishigagh | |
| Glooid | g/cm³ |
| Lectro-yiooldaght | 1.13 |
| Goull eeaneagh | 0.97 as 1.09 |
| Shennaghys | |
| Feddynit magh ec | Jacob Akiba Marinsky (en)  , Lawrence E. Glendenin (en) as Charles D. Coryell (en) |
| Feddynys | 1945 |
| Epennym | Prometheus |
 | |
| She bun ta'n art shoh. Cur rish, son foays y yannoo da Wikipedia. |