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Roentgeniom
 | |
| Ensampel a |
Elven gymyk, elven synthesek  |
|---|---|
| Dydhyas diskudhans |
8 Kevardhu 1994 |
| Niver atomek |
111 |
| Rann a |
period 7, bagas 11 |
 Restrennow kelmys war Gemmyn Wikimedia | |
Elven gemyk synthetek ew roentgeniom, niver 111 e'n Vosen Beriodek. Y arwodh gemyk ew Rg. An hanow a enor an fysegydh a Almayn, Wilhelm Röntgen, neb a dhiskudhas dewydnow-X en 1895. Nag ew kevys en naturel. Pur radyoweythresek ew, an isotop gen an hanter-bewnans hirra ew roentgeniom-282 (100 eylen). Gwres veu rag an kensa pres en 1994 en Arbovji GSI en Darmstadt, Almayn.
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